10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

[ X ]  QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2011

or

[    ]  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                      to                     

Commission File Number:    001-07434

Aflac Incorporated

(Exact name of registrant as specified in its charter)

Georgia	58-1167100
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
1932 Wynnton Road, Columbus, Georgia	31999
(Address of principal executive offices)	(ZIP Code)

706.323.3431

(Registrant’s telephone number, including area code)

(Former name, former address and former fiscal year, if changed since last report)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.            þ  Yes  ¨  No

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).            þ  Yes  ¨  No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer  þ	Accelerated filer  ¨
Non-accelerated filer   ¨ (Do not check if a smaller reporting company)	Smaller reporting company  ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).                                                                                                                                                           ¨  Yes  þ  No

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.

Class	July 28, 2011
Common Stock, $.10 Par Value	467,160,513 shares

Aflac Incorporated and Subsidiaries

Quarterly Report on Form 10-Q

For the Quarter Ended June 30, 2011

Table of Contents

		Page
PART I.	FINANCIAL INFORMATION:
Item 1.	Financial Statements (Unaudited)
	Review by Independent Registered Public Accounting Firm		1
	Report of Independent Registered Public Accounting Firm		2
	Consolidated Statements of Earnings   Three Months Ended June 30, 2011, and 2010   Six Months Ended June 30, 2011, and 2010		3
	Consolidated Balance Sheets   June 30, 2011 and December 31, 2010		4
	Consolidated Statements of Shareholders’ Equity   Six Months Ended June 30, 2011, and 2010		6
	Consolidated Statements of Cash Flows   Six Months Ended June 30, 2011, and 2010		7
	Consolidated Statements of Comprehensive Income (Loss)   Three Months Ended June 30, 2011, and 2010   Six Months Ended June 30, 2011, and 2010		9
	Notes to the Consolidated Financial Statements		10
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations		49
Item 3.	Quantitative and Qualitative Disclosures about Market Risk		82
Item 4.	Controls and Procedures		82
PART II.	OTHER INFORMATION:
Item 1A.	Risk Factors		83
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds		84
Item 6.	Exhibits		85

Items other than those listed above are omitted because they are not required or are not applicable.

i

PART I. FINANCIAL INFORMATION

Item 1. Financial Statements.

Review by Independent Registered Public Accounting Firm

The June 30, 2011, and 2010, consolidated financial statements included in this filing have been reviewed by KPMG LLP, an independent registered public accounting firm, in accordance with established professional standards and procedures for such a review.

The report of KPMG LLP commenting upon its review is included on the following page.

1

Report of Independent Registered Public Accounting Firm

The Board of Directors and Shareholders

Aflac Incorporated:

We have reviewed the consolidated balance sheet of Aflac Incorporated and subsidiaries (the Company) as of June 30, 2011, and the related consolidated statements of earnings and comprehensive income (loss) for the three-month and six-month periods ended June 30, 2011 and 2010, and the consolidated statements of shareholders’ equity and cash flows for the six-month periods ended June 30, 2011 and 2010. These consolidated financial statements are the responsibility of the Company’s management.

We conducted our reviews in accordance with the standards of the Public Company Accounting Oversight Board (United States). A review of interim financial information consists principally of applying analytical procedures and making inquiries of persons responsible for financial and accounting matters. It is substantially less in scope than an audit conducted in accordance with the standards of the Public Company Accounting Oversight Board (United States), the objective of which is the expression of an opinion regarding the financial statements taken as a whole. Accordingly, we do not express such an opinion.

Based on our reviews, we are not aware of any material modifications that should be made to the consolidated financial statements referred to above for them to be in conformity with U.S. generally accepted accounting principles.

We have previously audited, in accordance with standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheet of Aflac Incorporated and subsidiaries as of December 31, 2010, and the related consolidated statements of earnings, shareholders’ equity, cash flows and comprehensive income (loss) for the year then ended (not presented herein); and in our report dated February 25, 2011, we expressed an unqualified opinion on those consolidated financial statements. Our report refers to a change in the method of evaluating the consolidation of variable interest entities (VIEs) and qualified special purpose entities (QSPEs) in 2010 and a change in the method of evaluating other-than-temporary impairments of debt securities in 2009. In our opinion, the information set forth in the accompanying consolidated balance sheet as of December 31, 2010, is fairly stated in all material respects, in relation to the consolidated balance sheet from which it has been derived.

Atlanta, Georgia

August 5, 2011

2

Aflac Incorporated and Subsidiaries

Consolidated Statements of Earnings

	Three Months Ended June 30,						Six Months Ended         June 30,
(In millions, except for share and per-share amounts - Unaudited)	2011			2010			2011			2010
Revenues:
Premiums, principally supplemental health insurance	$	4,956		$	4,333		$	9,828			$    8,681
Net investment income		784			727			1,579			1,453
Realized investment gains (losses):
Other-than-temporary impairment losses realized		(528	)		0			(933	)		(42)
Sales and redemptions		(182	)		14			(326	)		(7)
Derivative and other gains (losses)		42			(103	)		12			(86)
Total realized investment gains (losses)		(668	)		(89	)		(1,247	)		(135)
Other income		16			9			44			45
Total revenues		5,088			4,980			10,204			10,044
Benefits and expenses:
Benefits and claims		3,310			2,885			6,532			5,741
Acquisition and operating expenses:
Amortization of deferred policy acquisition costs		264			229			542			509
Insurance commissions		427			398			849			801
Insurance expenses		543			508			1,051			988
Interest expense		46			33			92			66
Other operating expenses		45			38			86			76
Total acquisition and operating expenses		1,325			1,206			2,620			2,440
Total benefits and expenses		4,635			4,091			9,152			8,181
Earnings before income taxes		453			889			1,052			1,863
Income taxes		173			308			378			646
Net earnings	$	280		$	581		$	674		$	1,217
Net earnings per share:
Basic	$	.60		$	1.24		$	1.44		$	2.60
Diluted		.60			1.23			1.43			2.58
Weighted-average outstanding common shares used in computing earnings per share (In thousands):
Basic		466,498			468,824			467,317			468,377
Diluted		469,752			472,539			470,990			472,497
Cash dividends per share	$	.30		$	.28		$	.60		$	.56

See the accompanying Notes to the Consolidated Financial Statements.

3

Aflac Incorporated and Subsidiaries

Consolidated Balance Sheets

(In millions)	June 30, 2011 (Unaudited)		December 31, 2010
Assets:
Investments and cash:
Securities available for sale, at fair value:
Fixed maturities (amortized cost $46,415 in 2011 and $43,133 in 2010)		$    47,380		$     43,100
Fixed maturities - consolidated variable interest entities (amortized cost $4,853 in 2011 and $4,969 in 2010)		5,126		5,255
Perpetual securities (amortized cost $5,627 in 2011 and $6,209 in 2010)		5,559		5,974
Perpetual securities - consolidated variable interest entities (amortized cost $1,632 in 2011 and $1,618 in 2010)		1,544		1,538
Equity securities (cost $21 in 2011 and $22 in 2010)		23		23
Securities held to maturity, at amortized cost:
Fixed maturities (fair value $31,405 in 2011 and $29,899 in 2010)		31,289		29,470
Fixed maturities - consolidated variable interest entities (fair value $577 in 2011 and $570 in 2010)		619		614
Other investments		153		135
Cash and cash equivalents		1,291		2,121
Total investments and cash		92,984		88,230
Receivables		879		661
Accrued investment income		739		738
Deferred policy acquisition costs		10,028		9,734
Property and equipment, at cost less accumulated depreciation		611		620
Other		991 (1)		1,056(1)
Total assets	$	106,232	$	101,039

⁽¹⁾  Includes $495 in 2011 and $564 in 2010 of derivatives from consolidated variable interest entities

See the accompanying Notes to the Consolidated Financial Statements.

(continued)

4

Aflac Incorporated and Subsidiaries

Consolidated Balance Sheets (continued)

(In millions, except for share and per-share amounts)	June 30,     2011     (Unaudited)		December 31, 2010
Liabilities and shareholders’ equity:
Liabilities:
Policy liabilities:
Future policy benefits		$    74,472		$    72,103
Unpaid policy claims		3,855		3,719
Unearned premiums		1,306		1,197
Other policyholders’ funds		6,733		5,437
Total policy liabilities		86,366		82,456
Notes payable		3,048		3,038
Income taxes		2,186		1,969
Payables for return of cash collateral on loaned securities		338		191
Other		2,313(2)		2,329(2)
Commitments and contingent liabilities (Note 10)
Total liabilities		94,251		89,983
Shareholders’ equity:
Common stock of $.10 par value. In thousands: authorized 1,900,000 shares in 2011 and 2010; issued 663,412 shares in 2011 and 662,660 shares in 2010		66		66
Additional paid-in capital		1,372		1,320
Retained earnings		14,587		14,194
Accumulated other comprehensive income (loss):
Unrealized foreign currency translation gains		914		926
Unrealized gains (losses) on investment securities:
Unrealized gains (losses) on securities not other-than-temporarily impaired		752		36
Unrealized gains (losses) on other-than-temporarily impaired securities		0		(3)
Unrealized gains (losses) on derivatives		6		31
Pension liability adjustment		(125)		(128)
Treasury stock, at average cost		(5,591)		(5,386)
Total shareholders’ equity		11,981		11,056
Total liabilities and shareholders’ equity		$  106,232		$  101,039

⁽²⁾  Includes $584 in 2011 and $741 in 2010 of derivatives from consolidated variable interest entities

See the accompanying Notes to the Consolidated Financial Statements.

5

Aflac Incorporated and Subsidiaries

Consolidated Statements of Shareholders’ Equity

	Six Months Ended June 30,
(In millions - Unaudited)	2011		2010
Common stock:
Balance, beginning of period	$	66	$	66
Balance, end of period		66		66
Additional paid-in capital:
Balance, beginning of period		1,320		1,228
Exercise of stock options		15		32
Share-based compensation		18		17
Gain (loss) on treasury stock reissued		19		(6)
Balance, end of period		1,372		1,271
Retained earnings:
Balance, beginning of period		14,194		12,410
Cumulative effect of change in accounting principle, net of income taxes		0		(25)
Net earnings		674		1,217
Dividends to shareholders		(281)		(262)
Balance, end of period		14,587		13,340
Accumulated other comprehensive income (loss):
Balance, beginning of period		862		29
Unrealized foreign currency translation gains (losses) during period, net of income taxes:
Cumulative effect of change in accounting principle, net of income taxes		0		(320)
Change in unrealized foreign currency translation gains (losses) during period, net of income taxes		(12)		143
Unrealized gains (losses) on investment securities during period, net of income taxes and reclassification adjustments:
Cumulative effect of change in accounting principle, net of income taxes		0		180
Change in unrealized gains (losses) on investment securities not other-than-temporarily impaired, net of income taxes		716		587
Change in unrealized gains (losses) on other-than-temporarily impaired investment securities, net of income taxes		3		10
Unrealized gains (losses) on derivatives during period, net of income taxes		(25)		(1)
Pension liability adjustment during period, net of income taxes		3		1
Balance, end of period		1,547		629
Treasury stock:
Balance, beginning of period		(5,386)		(5,316)
Purchases of treasury stock		(231)		(5)
Cost of shares issued		26		45
Balance, end of period		(5,591)		(5,276)
Total shareholders’ equity	$	11,981	$	10,030

See the accompanying Notes to the Consolidated Financial Statements.

6

Aflac Incorporated and Subsidiaries

Consolidated Statements of Cash Flows

	Six Months Ended June 30,
(In millions - Unaudited)	2011		2010
Cash flows from operating activities:
Net earnings	$	674		$       1,217
Adjustments to reconcile net earnings to net cash provided by operating activities:
Change in receivables and advance premiums		926		423
Increase in deferred policy acquisition costs		(225)		(164)
Increase in policy liabilities		1,922		1,473
Change in income tax liabilities		(82)		181
Realized investment (gains) losses		1,247		135
Other, net		(84)		(242)
Net cash provided (used) by operating activities		4,378		3,023
Cash flows from investing activities:
Proceeds from investments sold or matured:
Securities available for sale:
Fixed maturities sold		1,767		1,055
Fixed maturities matured or called		775		312
Perpetual securities sold		226		582
Perpetual securities matured or called		61		0
Equity securities sold		0		328
Securities held to maturity:
Fixed maturities matured or called		325		2
Costs of investments acquired:
Securities available for sale:
Fixed maturities acquired		(4,822)		(4,606)
Equity securities acquired		0		(330)
Securities held to maturity:
Fixed maturities acquired		(3,484)		(642)
Cash received as collateral on loaned securities, net		147		134
Other, net		(29)		(11)
Net cash provided (used) by investing activities	$	(5,034)	$	(3,176)

See the accompanying Notes to the Consolidated Financial Statements.

(continued)

7

Aflac Incorporated and Subsidiaries

Consolidated Statements of Cash Flows (continued)

	Six Months Ended June 30,
(In millions - Unaudited)	2011		2010
Cash flows from financing activities:
Purchases of treasury stock		$   (222)		$     (5)
Principal payments under debt obligations		(1)		(2)
Dividends paid to shareholders		(260)		(262)
Change in investment-type contracts, net		275		191
Treasury stock reissued		26		36
Other, net		7		35
Net cash provided (used) by financing activities		(175)		(7)
Effect of exchange rate changes on cash and cash equivalents		1		21
Net change in cash and cash equivalents		(830)		(139)
Cash and cash equivalents, beginning of period		2,121		2,323
Cash and cash equivalents, end of period		$ 1,291		$2,184
Supplemental disclosures of cash flow information:
Income taxes paid		$    460		$   532
Interest paid		72		52
Impairment losses included in realized investment losses		933		42
Noncash financing activities:
Capitalized lease obligations		1		1
Treasury stock issued for:
Shareholder dividend reinvestment		21		0
Share-based compensation grants		2		3

See the accompanying Notes to the Consolidated Financial Statements.

8

Aflac Incorporated and Subsidiaries

Consolidated Statements of Comprehensive Income (Loss)

	Three Months Ended June 30,				Six Months Ended June 30,
(In millions - Unaudited)	2011		2010		2011		2010
Net earnings		$      280		$      581		$      674		$      1,217
Other comprehensive income (loss) before income taxes:
Unrealized foreign currency translation gains (losses) during period		(82)		61		(86)		43
Unrealized gains (losses) on investment securities:
Unrealized holding gains (losses) on investment securities during period		473		555		(136)		878
Reclassification adjustment for realized (gains) losses on investment securities included in net earnings		716		(14)		1,243		49
Unrealized gains (losses) on derivatives during period		17		8		(38)		(2)
Pension liability adjustment during period		0		0		4		2
Total other comprehensive income (loss) before income taxes		1,124		610		987		970
Income tax expense (benefit) related to items of other comprehensive income (loss)		292		74		302		230
Other comprehensive income (loss), net of income taxes		832		536		685		740
Total comprehensive income (loss)		$   1,112		$   1,117		$   1,359		$      1,957

See the accompanying Notes to the Consolidated Financial Statements.

9

Aflac Incorporated and Subsidiaries

Notes to the Consolidated Financial Statements

(Interim period data – Unaudited)

1.   SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Description of Business

Aflac Incorporated (the Parent Company) and its subsidiaries (collectively, the Company) primarily sell supplemental health and life insurance in the United States and Japan. The Company’s insurance business is marketed and administered through American Family Life Assurance Company of Columbus (Aflac), which operates in the United States (Aflac U.S.) and as a branch in Japan (Aflac Japan). Most of Aflac’s policies are individually underwritten and marketed through independent agents. Aflac U.S. markets and administers group products through Continental American Insurance Company (CAIC). Our insurance operations in the United States and our branch in Japan service the two markets for our insurance business. Aflac Japan’s revenues, including realized gains and losses on its investment portfolio, accounted for 73% and 75% of the Company’s total revenues in the six-month periods ended June 30, 2011, and 2010, respectively. The percentage of the Company’s total assets attributable to Aflac Japan was 87% and 86% at June 30, 2011, and December 31, 2010, respectively.

Basis of Presentation

We prepare our financial statements in accordance with U.S. generally accepted accounting principles (GAAP). These principles are established primarily by the Financial Accounting Standards Board (FASB). In these Notes to the Consolidated Financial Statements, references to GAAP issued by the FASB are derived from the FASB Accounting Standards Codification^TM (ASC). The preparation of financial statements in conformity with GAAP requires us to make estimates when recording transactions resulting from business operations based on currently available information. The most significant items on our balance sheet that involve a greater degree of accounting estimates and actuarial determinations subject to changes in the future are the valuation of investments, deferred policy acquisition costs, liabilities for future policy benefits and unpaid policy claims, and income taxes. These accounting estimates and actuarial determinations are sensitive to market conditions, investment yields, mortality, morbidity, commission and other acquisition expenses, and terminations by policyholders. As additional information becomes available, or actual amounts are determinable, the recorded estimates will be revised and reflected in operating results. Although some variability is inherent in these estimates, we believe the amounts provided are adequate.

The unaudited consolidated financial statements include the accounts of the Parent Company, its subsidiaries and those entities required to be consolidated under applicable accounting standards. All material intercompany accounts and transactions have been eliminated.

In the opinion of management, the accompanying unaudited consolidated financial statements of the Company contain all adjustments, consisting of normal recurring accruals, which are necessary to fairly present the consolidated balance sheets as of June 30, 2011, and December 31, 2010, the consolidated statements of earnings and comprehensive income (loss) for the three- and six-month periods ended June 30, 2011, and 2010, and the consolidated statements of shareholders’ equity and cash flows for the six-month periods ended June 30, 2011, and 2010. Results of operations for interim periods are not necessarily indicative of results for the entire year. As a result, these financial statements should be read in conjunction with the financial statements and notes thereto included in our annual report to shareholders for the year ended December 31, 2010.

Significant Accounting Policies

We have refined the explanation of our accounting policies for the translation of foreign currencies and income taxes. All other categories of significant accounting policies remain unchanged from our annual report to shareholders for the year ended December 31, 2010.

Translation of Foreign Currencies: The functional currency of Aflac Japan’s insurance operations is the Japanese yen. We translate our yen-denominated financial statement accounts into U.S. dollars as follows. Assets and liabilities are translated at end-of-period exchange rates. Realized gains and losses on security transactions are translated at the exchange rate on the trade date of each transaction. Other revenues, expenses and cash flows are translated using average exchange rates for the period. The resulting currency translation adjustments are reported in accumulated other comprehensive income. We include in earnings the realized currency exchange gains and losses resulting from transactions.

10

Aflac Japan maintains an investment portfolio of dollar-denominated securities on behalf of Aflac U.S., which serves as an economic currency hedge of a portion of our investment in Aflac Japan. The functional currency for these investments is the U.S. dollar. The related investment income and realized/unrealized investment gains and losses are also denominated in U.S. dollars. Since the functional currency of Aflac Japan’s dollar-denominated portfolio is the U.S. dollar, there is no translation adjustment to record in other comprehensive income for these investments when the yen/dollar exchange rate changes. However, the foreign exchange gains and losses related to this portfolio are taxable in Japan and the U.S. when the securities mature or are sold. Until maturity or sale, deferred tax expense or benefit associated with the foreign exchange gains or losses are recognized in the income tax expense on other comprehensive income.

We have designated the yen-denominated Uridashi and Samurai notes and yen-denominated loans issued by the Parent Company as a hedge of our investment in Aflac Japan. Outstanding principal and related accrued interest on these items are translated into U.S. dollars at end-of-period exchange rates. Currency translation adjustments are recorded through other comprehensive income and are included in accumulated other comprehensive income.

Income Taxes: Income tax provisions are generally based on pretax earnings reported for financial statement purposes, which differ from those amounts used in preparing our income tax returns. Deferred income taxes are recognized for temporary differences between the financial reporting basis and income tax basis of assets and liabilities, based on enacted tax laws and statutory tax rates applicable to the periods in which we expect the temporary differences to reverse. We record deferred tax assets for tax positions taken based on our assessment of whether the tax position is more likely than not to be sustained upon examination by taxing authorities. A valuation allowance is established for deferred tax assets when it is more likely than not that an amount will not be realized.

As discussed in the Translation of Foreign Currencies section above, Aflac Japan maintains a dollar-denominated investment portfolio on behalf of Aflac U.S. While there are no translation effects to record in other comprehensive income, the deferred tax expense or benefit associated with foreign exchange gains or losses on the portfolio is recognized in other comprehensive income until the securities mature or are sold. Total income tax expense (benefit) related to items of other comprehensive income (loss) included a tax benefit of $112.4 million and $117.8 million during the three-month periods ended June 30, 2011 and 2010, respectively, for this dollar-denominated portfolio. Excluding these amounts from total taxes on other comprehensive income would result in an effective income tax rate on pretax other comprehensive income (loss) of 36.0% and 31.5% in the three-month periods ended June 30, 2011 and 2010, respectively. Total income tax expense (benefit) related to items of other comprehensive income (loss) included a tax benefit of $50.4 million and $95.3 million during the six-month periods ended June 30, 2011 and 2010, respectively, for this dollar-denominated portfolio. Excluding these amounts from total taxes on other comprehensive income would result in an effective income tax rate on pretax other comprehensive income (loss) of 35.7% and 33.5% in the six-month periods ended June 30, 2011 and 2010, respectively.

New Accounting Pronouncements

Recently Adopted Accounting Pronouncements

Fair value measurements and disclosures: In January 2010, the FASB issued amended accounting guidance on fair value disclosures. This guidance requires the activity in fair value hierarchy Level 3 for purchases, sales, issuances, and settlements to be reported on a gross, rather than net, basis. We adopted this guidance as of January 1, 2011. The adoption did not have an impact on our financial position or results of operations.

Accounting for variable interest entities and transfers of financial assets: In June 2009, the FASB issued amended guidance on accounting for variable interest entities (VIEs) and transfers of financial assets. As discussed above, this guidance defines new criteria for determining the primary beneficiary of a VIE; increases the frequency of required reassessments to determine whether a company is the primary beneficiary of a VIE; eliminates the exemption for the consolidation of qualified special purpose entities (QSPEs); establishes conditions for reporting a transfer of a portion of a financial asset as a sale; modifies the financial asset derecognition criteria; and requires additional disclosures. We adopted the provisions of this guidance on January 1, 2010 as a cumulative effect of change in accounting principle. We were required to consolidate certain of the VIEs with which we are currently involved. We were not required to deconsolidate any VIEs on January 1, 2010.

Upon the initial consolidation of the VIEs on January 1, 2010, the assets, liabilities, and noncontrolling interests of the VIEs were recorded at their carrying values, which is the amounts at which the assets, liabilities, and noncontrolling interests would have been carried in the consolidated financial statements when we first met the conditions to be the primary beneficiary. For any of the VIEs that were required to be consolidated, we also considered whether any of the derivatives in these structures qualified on January 1, 2010, as a cash flow hedge of the changes in cash flows attributable to foreign currency and/or interest rate risk. Certain of the swaps did not qualify for hedge accounting since the swap had a

11

fair value on January 1, 2010. Other swaps did not qualify for hedge accounting since they increased, rather than reduced, cash flow risk.

For additional information concerning our investments in VIEs and derivatives, see Notes 3 and 4, respectively.

Accounting Pronouncements Pending Adoption

Presentation of comprehensive income: In June 2011, the FASB issued guidance to amend the presentation of comprehensive income. The amendments require that all non-owner changes in stockholders’ equity be presented either in a single continuous statement of comprehensive income or in two separate but consecutive statements. The amendment also requires reclassification adjustments for items that are reclassified from other comprehensive income to net income to be presented in the statements where the components of net income and the components of other comprehensive income are presented. This guidance is effective for interim and annual periods beginning after December 15, 2011. We do not expect the adoption of this guidance to have any impact on our financial position or results of operations.

Fair value measurements and disclosures: In May 2011, the FASB issued guidance to amend the fair value measurement and disclosure requirements. Most of the amendments are clarifications of the FASB’s intent about the application of existing fair value measurement and disclosure requirements. Other amendments change a particular principle or requirement for measuring fair value or disclosing information about fair value measurements. The new fair value measurement disclosures include additional quantitative and qualitative disclosures for Level 3 measurements, including a qualitative sensitivity analysis of fair value to changes in unobservable inputs, and categorization by fair value hierarchy level for items for which the fair value is only disclosed. This guidance is effective for interim and annual periods beginning after December 15, 2011. We are currently evaluating the impact of adopting this guidance on our financial position and results of operations.

Accounting for costs associated with acquiring or renewing insurance contracts: In October 2010, the FASB issued amended accounting guidance on accounting for costs associated with acquiring or renewing insurance contracts. Only incremental direct costs associated with the successful acquisition of a new or renewal contract may be capitalized. The amendment also prohibits capitalizing direct-response advertising costs unless they meet certain criteria. This guidance is effective for interim and annual periods beginning after December 15, 2011. We are currently evaluating the impact of adopting this guidance on our financial position and results of operations.

Recent accounting guidance not discussed above is not applicable or did not have an impact on our business.

For additional information on new accounting pronouncements and recent accounting guidance and their impact, if any, on our financial position or results of operations, see Note 1 of the Notes to the Consolidated Financial Statements in our annual report to shareholders for the year ended December 31, 2010.

2.   BUSINESS SEGMENT INFORMATION

The Company consists of two reportable insurance business segments: Aflac Japan and Aflac U.S., both of which sell supplemental health and life insurance. Operating business segments that are not individually reportable are included in the “Other business segments” category.

We do not allocate corporate overhead expenses to business segments. We evaluate and manage our business segments using a financial performance measure called pretax operating earnings. Our definition of operating earnings excludes the following items from net earnings on an after-tax basis: realized investment gains/losses (securities transactions, impairments, and the impact of derivative and hedging activities) and nonrecurring items. We then exclude income taxes related to operations to arrive at pretax operating earnings. Information regarding operations by segment follows:

12

	Three Months Ended June 30,				Six Months Ended June 30,
(In millions)	2011		2010		2011		2010
Revenues:
Aflac Japan:
Earned premiums	$	3,770	$	3,186	$	7,472	$	6,393
Net investment income		636		593		1,285		1,186
Other income		5		(1)		25		26
Total Aflac Japan		4,411		3,778		8,782		7,605
Aflac U.S.:
Earned premiums		1,186		1,147		2,356		2,289
Net investment income		148		135		291		267
Other income		3		3		6		5
Total Aflac U.S.		1,337		1,285		2,653		2,561
Other business segments		13		11		28		23
Total business segment revenues		5,761		5,074		11,463		10,189
Realized investment gains (losses)		(668)		(89)		(1,247)		(135)
Corporate		60		49		121		101
Intercompany eliminations		(65)		(54)		(133)		(111)
Total revenues	$	5,088	$	4,980	$	10,204	$	10,044
	Three Months Ended June 30,				Six Months Ended June 30,
(In millions)	2011		2010		2011		2010
Pretax earnings:
Aflac Japan	$	931	$	798	$	1,911	$	1,619
Aflac U.S.		246		227		499		471
Other business segments		0		(1)		0		(2)
Total business segment pretax operating earnings		1,177		1,024		2,410		2,088
Interest expense, noninsurance operations		(41)		(31)		(82)		(63)
Corporate and eliminations		(15)		(15)		(29)		(27)
Pretax operating earnings		1,121		978		2,299		1,998
Realized investment gains (losses)		(668)		(89)		(1,247)		(135)
Total earnings before income taxes	$	453	$	889	$	1,052	$	1,863
Income taxes applicable to pretax operating earnings	$	388	$	339	$	795	$	693
Effect of foreign currency translation on operating earnings		51		12		99		33

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Assets were as follows:

(In millions)	June 30,         2011			December 31,        2010
Assets:
Aflac Japan	$	92,290		$	87,061
Aflac U.S.		13,208			13,095
Other business segments		162			155
Total business segment assets		105,660			100,311
Corporate		14,950			14,047
Intercompany eliminations		(14,378	)		(13,319	)
Total assets	$	106,232		$	101,039

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3.   INVESTMENTS

Investment Holdings

The amortized cost for our investments in debt and perpetual securities, the cost for equity securities and the fair values of these investments are shown in the following tables.

	June 30, 2011
(In millions)	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair   Value
Securities available for sale,   carried at fair value:
Fixed maturities:
Yen-denominated:
Japan government and agencies	$	17,436	$	556	$	12	$	17,980
Mortgage- and asset-backed securities		923		32		5		950
Public utilities		2,575		71		117		2,529
Sovereign and supranational		1,721		119		19		1,821
Banks/financial institutions		4,766		134		410		4,490
Other corporate		5,860		154		485		5,529
Total yen-denominated		33,281		1,066		1,048		33,299
Dollar-denominated:
U.S. government and agencies		1,816		71		0		1,887
Municipalities		1,027		19		21		1,025
Mortgage- and asset-backed securities(1)		451		98		1		548
Collateralized debt obligations		4		0		0		4
Public utilities		2,824		266		35		3,055
Sovereign and supranational		392		67		3		456
Banks/financial institutions		3,298		180		52		3,426
Other corporate		8,175		700		69		8,806
Total dollar-denominated		17,987		1,401		181		19,207
Total fixed maturities		51,268		2,467		1,229		52,506
Perpetual securities:
Yen-denominated:
Banks/financial institutions		6,570		200		374		6,396
Other corporate		332		25		0		357
Dollar-denominated:
Banks/financial institutions		357		16		23		350
Total perpetual securities		7,259		241		397		7,103
Equity securities		21		4		2		23
Total securities available for sale	$	58,548	$	2,712	$	1,628	$	59,632

⁽¹⁾ Includes less than $1 million of other-than-temporary non-credit-related losses

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	June 30, 2011
(In millions)	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair   Value
Securities held to maturity,   carried at amortized cost:
Fixed maturities:
Yen-denominated:
Japan government and agencies	$	3,216	$	70	$	4	$	3,282
Municipalities		535		19		4		550
Mortgage- and asset-backed securities		136		4		0		140
Public utilities		6,396		260		127		6,529
Sovereign and supranational		4,173		198		89		4,282
Banks/financial institutions		12,303		211		589		11,925
Other corporate		5,149		214		89		5,274
Total yen-denominated		31,908		976		902		31,982
Total securities held to maturity	$	31,908	$	976	$	902	$	31,982

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	December 31, 2010
(In millions)	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair   Value
Securities available for sale,   carried at fair value:
Fixed maturities:
Yen-denominated:
Japan government and agencies	$	16,607	$	584	$	14	$	17,177
Mortgage- and asset-backed securities		1,224		35		15		1,244
Public utilities		2,554		117		80		2,591
Sovereign and supranational		903		47		12		938
Banks/financial institutions		5,927		152		1,177		4,902
Other corporate		5,733		136		457		5,412
Total yen-denominated		32,948		1,071		1,755		32,264
Dollar-denominated:
U.S. government and agencies		32		4		0		36
Municipalities		1,006		9		42		973
Mortgage- and asset-backed securities(1)		485		90		13		562
Collateralized debt obligations		5		0		0		5
Public utilities		2,568		246		36		2,778
Sovereign and supranational		395		63		2		456
Banks/financial institutions		3,496		143		108		3,531
Other corporate		7,167		662		79		7,750
Total dollar-denominated		15,154		1,217		280		16,091
Total fixed maturities		48,102		2,288		2,035		48,355
Perpetual securities:
Yen-denominated:
Banks/financial institutions		7,080		172		533		6,719
Other corporate		328		15		0		343
Dollar-denominated:
Banks/financial institutions		419		61		30		450
Total perpetual securities		7,827		248		563		7,512
Equity securities		22		3		2		23
Total securities available for sale	$	55,951	$	2,539	$	2,600	$	55,890

⁽¹⁾  Includes $4 of other-than-temporary non-credit-related losses

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	December 31, 2010
(In millions)	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Securities held to maturity,   carried at amortized cost:
Fixed maturities:
Yen-denominated:
Japan government and agencies	$	344	$	4	$	4	$	344
Municipalities		407		18		2		423
Mortgage- and asset-backed securities		146		5		0		151
Public utilities		6,339		326		120		6,545
Sovereign and supranational		4,951		305		65		5,191
Banks/financial institutions		12,618		216		526		12,308
Other corporate		5,279		274		46		5,507
Total yen-denominated		30,084		1,148		763		30,469
Total securities held to maturity	$	30,084	$	1,148	$	763	$	30,469

The methods of determining the fair values of our investments in debt securities, perpetual securities and equity securities are described in Note 5.

Included in the available-for-sale fixed maturities portfolio are securities with embedded derivatives for which we have elected the fair value option. These securities were recorded at a fair value of $637 million at June 30, 2011, compared with $619 million at December 31, 2010. We recognized in earnings investment gains of $9 million and $12 million during the three- and six-month periods ended June 30, 2011, respectively, compared with less than $1 million of losses during the three- and six-month periods ended June 30, 2010, for the changes in fair value of these securities, which excludes the effects of foreign currency translation and additional fair value option elections.

During the second quarter of 2011, we did not reclassify any investments from the held-to-maturity portfolio to the available-for-sale portfolio. During the first quarter of 2011, we reclassified eight investments from the held-to-maturity portfolio to the available-for-sale portfolio as a result of significant declines in the issuers’ credit worthiness. At the time of the transfer, the securities had an aggregate amortized cost of $1.6 billion and an aggregate unrealized loss of $270 million. The securities transferred in the first quarter of 2011 included our investments in the Republic of Tunisia that had an aggregate amortized cost of $769 million and four securities associated with financial institutions in Portugal and Ireland with an aggregate amortized cost of $631 million. See the Investment Concentration section below for a discussion of these financial institutions in Portugal and Ireland.

During the second quarter of 2010, we reclassified four investments from the held-to-maturity portfolio to the available-for-sale portfolio as a result of significant downgrades of the issuers’ credit rating. At the time of transfer, the securities had an aggregate amortized cost of $1.2 billion and an aggregate unrealized loss of $665 million. We did not reclassify any investments from the held-to-maturity portfolio to the available-for-sale portfolio during the first quarter of 2010.

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Contractual and Economic Maturities

The contractual maturities of our investments in fixed maturities at June 30, 2011, were as follows:

	Aflac Japan				Aflac U.S.
(In millions)	Amortized Cost		Fair Value		Amortized Cost		Fair   Value
Available for sale:
Due in one year or less	$	1,515	$	1,558	$	56	$	57
Due after one year through five years		3,755		3,964		255		287
Due after five years through 10 years		3,697		3,951		936		1,076
Due after 10 years		32,370		32,378		7,199		7,619
Mortgage- and asset-backed securities		1,327		1,441		47		56
Total fixed maturities available for sale	$	42,664	$	43,292	$	8,493	$	9,095
Held to maturity:
Due in one year or less	$	714	$	724	$	0	$	0
Due after one year through five years		1,172		1,265		0		0
Due after five years through 10 years		3,103		3,439		0		0
Due after 10 years		26,782		26,413		0		0
Mortgage- and asset-backed securities		137		141		0		0
Total fixed maturities held to maturity	$	31,908	$	31,982	$	0	$	0

At June 30, 2011, the Parent Company had a portfolio of investment-grade available-for-sale fixed-maturity securities totaling $111 million at amortized cost and $119 million at fair value, which is not included in the table above.

Expected maturities may differ from contractual maturities because some issuers have the right to call or prepay obligations with or without call or prepayment penalties.

The majority of our perpetual securities are subordinated to other debt obligations of the issuer, but rank higher than the issuer’s equity securities. Perpetual securities have characteristics of both debt and equity investments, along with unique features that create economic maturity dates for the securities. Although perpetual securities have no contractual maturity date, they have stated interest coupons that were fixed at their issuance and subsequently change to a floating short-term interest rate of 125 to more than 300 basis points above an appropriate market index, generally by the 25^th year after issuance, thereby creating an economic maturity date. The economic maturities of our investments in perpetual securities, which were all reported as available for sale at June 30, 2011, were as follows:

	Aflac Japan				Aflac U.S.
(In millions)	Amortized Cost		Fair Value		Amortized Cost		Fair   Value
Due in one year or less	$	435	$	497	$	0	$	0
Due after one year through five years		1,498		1,555		5		5
Due after five years through 10 years		838		881		0		0
Due after 10 years		4,311		3,992		172		173
Total perpetual securities available for sale	$	7,082	$	6,925	$	177	$	178

Investment Concentrations

Our investment discipline begins with a top-down approach for each investment opportunity we consider. Consistent with that approach, we first approve each country in which we invest. In our approach to sovereign analysis, we consider the political, legal and financial context of the sovereign entity in which an issuer is domiciled and operates. Next we approve the issuer’s industry sector, including such factors as the stability of results and the importance of the sector to the overall economy. Specific credit names within approved countries and industry sectors are evaluated for their market position and specific strengths and potential weaknesses. Structures in which we invest are chosen for specific portfolio management purposes, including asset/liability management, portfolio diversification and net investment income.

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Banks and Financial Institutions

Our largest investment industry sector concentration is banks and financial institutions. Within the countries we approve for investment opportunities, we primarily invest in financial institutions that are strategically crucial to each approved country’s economy. The bank and financial institution sector is a highly regulated industry and plays a strategic role in the global economy. We achieve some degree of diversification in the bank and financial institution sector through a geographically diverse universe of credit exposures. Within this sector, the more significant concentration of our credit risk by geographic region or country of issuer at June 30, 2011, based on amortized cost, was: Europe, excluding the United Kingdom (43%); United States (21%); United Kingdom (8%); Japan (8%); and other (20%).

Our total investments in the bank and financial institution sector, including those classified as perpetual securities, were as follows:

	June 30, 2011			December 31, 2010
	Total Investments in Banks and Financial Institutions Sector (in millions)		Percentage of Total Investment Portfolio	Total Investments in Banks and Financial Institutions Sector (in millions)		Percentage of Total Investment     Portfolio
Debt Securities:
Amortized cost	$	20,367	22  %	$	22,041	26  %
Fair value		19,841	22		20,741	24
Perpetual Securities:
Upper Tier II:
Amortized cost	$	4,426	5  %	$	4,957	6  %
Fair value		4,432	5		4,748	5
Tier I:
Amortized cost		2,501	3		2,542	3
Fair value		2,314	2		2,421	3
Total:
Amortized cost	$	27,294	30  %	$	29,540	35  %
Fair value		26,587	29		27,910	32

Investments in Greece, Ireland, Italy, Portugal and Spain

Our investment exposure to sovereign debt and financial institutions in Greece, Ireland, Italy, Portugal and Spain was as follows:

	June 30, 2011					December 31, 2010
(In millions)	Amortized Cost			Fair    Value		Amortized Cost			Fair    Value
Sovereign and supranational:
Italy	$	310		$	304	$	307		$	306
Spain		737			768		730			782
Total	$	1,047		$	1,072	$	1,037		$	1,088
Banks and financial institutions:
Greece	$	0		$	0	$	1,152		$	391
Ireland		525			379		710			659
Italy		186			182		184			183
Portugal		282			282		859			770
Spain		531			499		526			503
Total	$	1,524	(1)	$	1,342	$	3,431	(1)	$	2,506

⁽¹⁾  Represents 6% in 2011 and 12% in 2010 of total investments in the banks and financial institutions sector, and 1% in 2011 and 4% in 2010 of total investments in debt and perpetual securities

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Ireland

During the second quarter of 2011, we sold our holdings in Irish Life and Permanent PLC, which were below-investment-grade perpetual securities that had previously been impaired, at a pretax loss of $74 million ($48 million after-tax). This followed the sale of another of our impaired below-investment-grade Irish financial institution securities in the first quarter of 2011 at a $2 million pretax gain. As of June 30, 2011, senior securities included in the table above issued by an Irish financial institution with amortized cost and fair value totaling $248 million and $139 million, respectively, were rated below investment grade. We believe that these unrealized losses are linked more to Ireland’s systemic problems rather than issuer-specific credit factors. The Irish government has stated that it does not support burden-sharing for senior debt holdings such as ours. This Irish bank is current on its obligation to us, and we believe it has the ability to meet its obligations to us. In addition, as of June 30, 2011, we had the intent to hold this investment to recovery in value. As a result, we did not recognize an other-than-temporary impairment for this investment as of June 30, 2011.

Greece

During the second quarter of 2010, our investments in Greek financial institutions, Alpha Bank, EFG Eurobank Ergasias, and National Bank of Greece (NBG), all of which were Lower Tier II subordinated debt, were downgraded to below investment grade. As a result of the downgrades, we reclassified these investments from held to maturity to available for sale. At that time, we believed the downgrade of the Greek banks was largely related to the problems of the Greek government and its poor fiscal management, rather than the banks’ specific credit profiles. The three Greek bank issuers that comprised our Greek financial institution holdings had, on average, Tier I capital ratios higher than their peers in other troubled European sovereigns. Their capital was at a level that we felt could sustain deterioration in assets and operations that accompany economic conditions, such as those that the Greek economy was encountering in 2010 and those expected in the next few years. All three Greek banks had sufficient capital under the stress testing applied by the Committee of European Banking Supervisors (CEBS) in July 2010. However, the problems of the Greek government and related ratings downgrades have caused a decline in the confidence of depositors and capital market participants in the Greek banking system. As a result, the banks have significantly relied upon the European Central Bank (ECB) for liquidity via posting of collateral, which tends to be in the form of Greek Government Bonds (GGBs) or debt guaranteed by the sovereign. As of December 31, 2010, all of the Greek banks were current on their obligations to us. While these financial institutions have significant investments in GGBs, as of December 31, 2010, we believed that these institutions would be solvent even if there were a future restructuring of GGBs and they would have the ability to meet their obligations to us. In addition, as of December 31, 2010, we had the intent to hold these investments to recovery in value. As a result, we did not recognize an other-than-temporary impairment for these investments as of December 31, 2010.

Subsequent to December 31, 2010, Greece remained under pressure, which has also continued to weigh on the Greek banks. Skepticism over the rigor of the capital stress tests applied by the CEBS in July 2010 grew, especially as further problems have developed in the capital of the Irish banks. On February 18, 2011, NBG announced its proposal for a “friendly merger” with Alpha Bank, but Alpha Bank rejected this proposal. However, this proposal highlighted risks that accompany consolidation among the top three banks in Greece. While the proposal could have created a national champion in Greek banking, it also would have concentrated ownership of GGBs in the combined entity and formed a very low-rated entity among our top ten largest investment holdings. Two rating agencies downgraded the Greek banks subsequent to downgrading the sovereign during the first quarter of 2011 (on January 17, 2011, and March 9, 2011). In the latter action, the rating agency lowered the ratings indicative of the banks’ intrinsic financial strength due to the persistent pressure on liquidity, asset quality and material exposure to GGBs. In light of the above increased risks and, in particular, the March 9, 2011 downgrade, we no longer supported our previous intent to hold our Greek bank investments to recovery in value. In March 2011, we sold our investment in Alpha Bank and recognized an investment loss of $177 million ($115 million after-tax). In the first quarter of 2011, we recognized other-than-temporary impairment losses of $397 million ($258 million after-tax) for the remaining two Greek bank holdings. In the second quarter of 2011, we sold our investment in EFG Eurobank Ergasias for $2 million more than its recorded impaired value, and we sold our remaining Greek bank investment, NBG, for $47 million less than its recorded impaired value.

Portugal

As of December 31, 2010 and the end of first quarter 2011, the issuers of our Portuguese bank and financial investments, Banco BPI S.A., Caixa Geral de Depositos S.A., and Banco Espirito Santo S.A., were current on their obligations to us, were profitable and had adequate Tier I capital ratios. During the first quarter of 2011, these investments were downgraded to below-investment-grade. However, at that time we believed that these ratings and the unrealized loss position of the investments were the result of the fiscal problems in the Eurozone region rather than the banks’ specific credit profiles. We believed that Portugal’s financial institutions were stronger than their other Eurozone peers and had not required much state support. It was challenging to separate the difficulties of the sovereign from the banks since the banks’ sources of liquidity are limited due to the financial situation of the sovereign. We believed the government of Portugal had exercised

21

more prudent fiscal policies and was in a better financial situation than some of its other Eurozone peers. However, on May 16, 2011 when the European Union officially announced a fiscal support package for Portugal, there was an increase in risk that Portugal could experience a stressed economic environment similar to that experienced in Greece and Ireland. We believed the terms of this fiscal support package could result in liquidity constraints on the banks and there could be a need for the banks to improve their liquidity and core capital. Such a situation could negatively impact our Lower Tier II securities and our ability to recover full principal and interest. Due to the reasonably possible risk that our Portuguese bank holdings could suffer further negative declines, we no longer supported our previous intent to hold our Portuguese bank investments to recovery in value and concluded that we would take steps to reduce our exposure in the region. In the second quarter of 2011, we sold our investment in Banco BPI, S.A. at a loss of $99 million ($64 million after-tax), and we recognized other-than-temporary impairment losses of $112 million ($73 million after-tax) and $163 million ($106 million after-tax) on our investments in Caixa Geral de Depositos S.A. and Banco Espirito Santo S.A., respectively.

With the exception of the securities discussed above, all other securities included in the table above were rated investment grade as of June 30, 2011.

Derisking

During the three- and six-month periods ended June 30, 2011, we pursued strategic investment activities to lower the risk profile of our investment portfolio. Our primary focus was on reducing our exposure to peripheral Eurozone investments (discussed in the preceding section), certain perpetual securities, and investments in certain banks or financial institutions. As a result of these derisking activities, we have no direct investment exposure in Greece, only senior indebtedness in Ireland, and materially lower exposure to Portuguese investments. Additional derisking activities have resulted in a reduction in exposure to some of our largest concentrated investment positions. See further details in the Realized Investment Gains and Losses section below.

Realized Investment Gains and Losses

Information regarding pretax realized gains and losses from investments is as follows:

22

	Three Months Ended June 30,						Six Months Ended June 30,
(In millions)	2011			2010			2011			2010
Realized investment gains (losses) on securities:
Debt securities:
Available for sale:
Gross gains from sales	$	10		$	0		$	36		$	51
Gross losses from sales		(132	)		(110	)		(319	)		(190	)
Net gains (losses) from redemptions		(1	)		1			6			1
Other-than-temporary impairment losses		(344	)		0			(748	)		0
Total debt securities		(467	)		(109	)		(1,025	)		(138	)
Perpetual securities:
Available for sale:
Gross gains from sales		48			125			54			133
Gross losses from sales		(107	)		0			(109	)		0
Other-than-temporary impairment losses		(184	)		0			(184	)		(41	)
Total perpetual securities		(243	)		125			(239	)		92
Equity securities:
Gross losses from sales		0			(2	)		0			(2	)
Other-than-temporary impairment losses		0			0			(1	)		(1	)
Total equity securities		0			(2	)		(1	)		(3	)
Other assets:
Derivative gains (losses)		(25	)		(103	)		(55	)		(86	)
Other		67			0			73			0
Total other assets		42			(103	)		18			(86	)
Total realized investment gains (losses)	$	(668	)	$	(89	)	$	(1,247	)	$	(135	)

During the three- and six-month periods ended June 30, 2011, net investment losses from the sales of securities and recognized impairments were primarily a result of an implemented plan to reduce the risk exposure in our investment portfolio coupled with the continued decline in the credit worthiness of issuers of certain investments. See the Investment Concentrations section above for more information. A valuation allowance of $19 million was recorded in the second quarter of 2011 related to the deferred tax assets associated with our realized investment losses.

During the three- and six-month periods ended June 30, 2010, net investment losses from securities sold or redeemed occurred in the normal course of business.

Other-than-temporary Impairment

The fair value of our debt and perpetual security investments fluctuates based on changes in credit spreads in the global financial markets. Credit spreads are most impacted by market rates of interest, the general and specific credit environment and global market liquidity. We believe that fluctuations in the fair value of our investment securities related to changes in credit spreads have little bearing on whether our investment is ultimately recoverable. Generally, we consider such declines in fair value to be temporary even in situations where an investment remains in an unrealized loss position for a year or more.

However, in the course of our credit review process, we may determine that it is unlikely that we will recover our investment in an issuer due to factors specific to an individual issuer, as opposed to general changes in global credit spreads. In this event, we consider such a decline in the investment’s fair value, to the extent below the investment’s cost or amortized cost, to be an other-than-temporary impairment of the investment and write the investment down to its fair value. The determination of whether an impairment is other than temporary is subjective and involves the consideration of various factors and circumstances, which includes but is not limited to the following:

— issuer financial condition, including profitability and cash flows

— credit status of the issuer

— the issuer’s specific and general competitive environment

— published reports

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— general economic environment

— regulatory, legislative and political environment

— the severity of the decline in fair value

— the length of time the fair value is below cost

— other factors as may become available from time to time

In addition to the usual investment risk associated with a debt instrument, our perpetual security holdings may be subject to the risk of nationalization of their issuers in connection with capital injections from an issuer’s sovereign government. We cannot be assured that such capital support will extend to all levels of an issuer’s capital structure. In addition, certain governments or regulators may consider imposing interest and principal payment restrictions on issuers of hybrid securities to preserve cash and build capital. In addition to the cash flow impact that additional deferrals would have on our portfolio, such deferrals could result in ratings downgrades of the affected securities, which in turn could impair the fair value of the securities and increase our regulatory capital requirements. We take factors such as these into account in our credit review process.

Another factor we consider in determining whether an impairment is other than temporary is an evaluation of our intent or requirement to sell the security prior to recovery of its amortized cost. We perform ongoing analyses of our liquidity needs, which includes cash flow testing of our policy liabilities, debt maturities, projected dividend payments and other cash flow and liquidity needs. Our cash flow testing includes extensive duration matching of our investment portfolio and policy liabilities. Based on our analyses, we have concluded that we have sufficient excess cash flows to meet our liquidity needs without liquidating any of our investments prior to their maturity. In addition, provided that our credit review process results in a conclusion that we will collect all of our cash flows and recover our investment in an issuer and the investment is within our target investment risk exposure limits, we generally do not sell investments prior to their maturity.

The majority of our investments are evaluated for other-than-temporary impairment using our debt impairment model. Our debt impairment model focuses on the ultimate collection of the cash flows from our investments. Our investments in perpetual securities that are rated below investment grade are evaluated for other-than-temporary impairment under our equity impairment model. Our equity impairment model focuses on the severity of a security’s decline in fair value coupled with the length of time the fair value of the security has been below amortized cost.

The following table details our pretax other-than-temporary impairment losses by investment category.

	Three Months Ended June 30,				Six Months Ended June 30,
(In millions)	2011		2010		2011		2010
Perpetual securities	$	184	$	0	$	184	$	41
Corporate bonds		343		0		740		0
Mortgage- and asset-backed securities		1		0		7		0
Municipalities		0		0		1		0
Equity securities		0		0		1		1
Total other-than-temporary impairment losses realized	$	528	$	0	$	933	$	42

We apply the debt security impairment model to our perpetual securities provided there has been no evidence of deterioration in credit of the issuer, such as a downgrade of the rating of a perpetual security to below investment grade. Subsequent to our initial investment, the perpetual securities of four issuers we own had been downgraded to below investment grade as of June 30, 2011. As a result of these downgrades, we were required to evaluate these securities for other-than-temporary impairment using the equity security impairment model rather than the debt security impairment model. Use of the equity security model limits the forecasted recovery period that can be used in the impairment evaluation and, accordingly, affects both the recognition and measurement of other-than-temporary impairment losses. We did not recognize any other-than-temporary impairment losses for perpetual securities from evaluation under our equity impairment model during the three- and six-month periods ended June 30, 2011. However, we recognized an other-than-temporary impairment loss of $184 million ($120 million after-tax) on perpetual securities during the three- and six-month periods ended June 30, 2011 due to further deterioration in the issuer’s creditworthiness. We recognized other-than-temporary impairment losses for perpetual securities from evaluation under our equity impairment model of $41 million ($27 million after-tax) during the six-month period ended June 30, 2010, however none of those impairment losses were recognized in the three-month period ended June 30, 2010.

Certain of our mortgage- and asset-backed securities had other-than-temporary impairments recognized prior to 2010 that had credit-related and non-credit-related components. The following table summarizes cumulative credit-related impairment losses on the securities still held at the end of the reporting period, for which other-than-temporary losses have been recognized and only the amount related to credit loss was recognized in earnings.

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	Three Months Ended June 30,				Six Months Ended June 30,
(In millions)	2011		2010		2011		2010
Cumulative credit loss impairments, beginning of period	$	4	$	23	$	13	$	24
Securities sold during period		0		(10)		(9)		(11)
Cumulative credit loss impairments, end of period	$	4	$	13	$	4	$	13

Unrealized Investment Gains and Losses

Effect on Shareholders’ Equity

The net effect on shareholders’ equity of unrealized gains and losses from investment securities was as follows:

(In millions)	June 30, 2011			December 31, 2010
Unrealized gains (losses) on securities available for sale	$	1,084		$	(61)
Unamortized unrealized gains on securities transferred to held to maturity		98			135
Deferred income taxes		(430	)		(41)
Shareholders’ equity, unrealized gains (losses) on investment securities	$	752		$	33

Gross Unrealized Loss Aging

The following tables show the fair value and gross unrealized losses, including the portion of other-than-temporary impairment recognized in accumulated other comprehensive income, of our available-for-sale and held-to-maturity investments, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position.

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	June 30, 2011
	Total				Less than 12 months				12 months or longer
(In millions)	Fair     Value		Unrealized Losses		Fair     Value		Unrealized Losses		Fair     Value		Unrealized   Losses
Fixed maturities:
Japan government and agencies:
Yen-denominated	$	1,590	$	16	$	1,590	$	16	$	0	$	0
Municipalities:
Dollar-denominated		405		21		365		9		40		12
Yen-denominated		58		4		0		0		58		4
Mortgage- and asset- backed securities:
Dollar-denominated		20		1		5		0		15		1
Yen-denominated		154		5		12		1		142		4
Public utilities:
Dollar-denominated		636		35		585		28		51		7
Yen-denominated		4,340		244		1,886		42		2,454		202
Sovereign and supranational:
Dollar-denominated		62		3		29		1		33		2
Yen-denominated		2,115		108		968		16		1,147		92
Banks/financial institutions:
Dollar-denominated		1,074		52		535		15		539		37
Yen-denominated		9,517		999		1,111		29		8,406		970
Other corporate:
Dollar-denominated		1,882		69		1,512		43		370		26
Yen-denominated		4,739		574		1,248		53		3,491		521
Total fixed maturities		26,592		2,131		9,846		253		16,746		1,878
Perpetual securities:
Dollar-denominated		210		23		117		3		93		20
Yen-denominated		3,096		374		482		21		2,614		353
Total perpetual securities		3,306		397		599		24		2,707		373
Equity securities		8		2		6		1		2		1
Total	$	29,906	$	2,530	$	10,451	$	278	$	19,455	$	2,252

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	December 31, 2010
	Total				Less than 12 months				12 months or longer
(In millions)	Fair     Value		Unrealized Losses		Fair     Value		Unrealized Losses		Fair     Value		Unrealized   Losses
Fixed maturities:
Japan government and agencies:
Yen-denominated	$	1,634	$	18	$	1,634	$	18	$	0	$	0
Municipalities:
Dollar-denominated		682		42		632		28		50		14
Yen-denominated		59		2		0		0		59		2
Mortgage- and asset- backed securities:
Dollar-denominated		78		13		20		0		58		13
Yen-denominated		415		15		415		15		0		0
Public utilities:
Dollar-denominated		556		36		498		28		58		8
Yen-denominated		2,877		200		766		47		2,111		153
Sovereign and supranational:
Dollar-denominated		45		2		12		0		33		2
Yen-denominated		1,579		77		428		1		1,151		76
Banks/financial institutions:
Dollar-denominated		1,484		108		753		22		731		86
Yen-denominated		10,609		1,703		1,506		40		9,103		1,663
Other corporate:
Dollar-denominated		1,741		79		1,456		52		285		27
Yen-denominated		4,503		503		507		45		3,996		458
Total fixed maturities		26,262		2,798		8,627		296		17,635		2,502
Perpetual securities:
Dollar-denominated		208		30		149		19		59		11
Yen-denominated		4,171		533		1,793		119		2,378		414
Total perpetual securities		4,379		563		1,942		138		2,437		425
Equity securities		13		2		13		1		0		1
Total	$	30,654	$	3,363	$	10,582	$	435	$	20,072	$	2,928

Analysis of Securities in Unrealized Loss Positions

The unrealized losses on our investments have been primarily related to changes in interest rates, foreign exchange rates or the widening of credit spreads rather than specific issuer credit-related events. In addition, because we do not intend to sell and do not believe it is likely that we will be required to sell these investments before a recovery of fair value to amortized cost, we do not consider any of these investments to be other-than-temporarily impaired as of and for the six-month period ended June 30, 2011. The following summarizes our evaluation of investment categories with significant unrealized losses and securities that were rated below investment grade. All other investment categories with securities in an unrealized loss position that are not specifically discussed below were composed of investment grade fixed maturities.

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Municipalities and Mortgage- and Asset-Backed Securities

As of June 30, 2011, 71% of the unrealized losses on investment securities in the municipalities sector and 70% of the unrealized losses on investment securities in the mortgage- and asset-backed securities sector were related to investments that were investment grade, compared with 82% and 54%, respectively, at December 31, 2010. We have determined that the majority of the unrealized losses on the investments in these sectors were caused by widening credit spreads. However, we have determined that the ability of the issuers to service our investments has not been compromised. Unrealized gains or losses related to prevailing interest rate environments are impacted by the remaining time to maturity of an investment. Assuming no credit-related factors develop, as investments near maturity the unrealized gains or losses can be expected to diminish.

Public Utilities

As of June 30, 2011, 95% of the unrealized losses on investments in the public utilities sector were related to investments that were investment grade, compared with 100% at December 31, 2010. For any credit-related declines in fair value, we perform a more focused review of the related issuer’s credit ratings, financial statements and other available financial data, timeliness of payment, competitive environment and any other significant data related to the issuer. From those reviews, we evaluate the issuers’ continued ability to service our investments. We have determined that the majority of the unrealized losses on the investments in the public utilities sector was caused by a decline in creditworthiness of a couple issuers in this sector. Also impacting the unrealized losses in the public utilities sector was widening credit spreads. Based on our credit analysis, we believe that our investments in this sector have the ability to service their obligations to us.

Bank and Financial Institution Investments

The following table shows the composition of our investments in an unrealized loss position in the bank and financial institution sector by fixed-maturity securities and perpetual securities. The table reflects those securities in that sector that were in an unrealized loss position as a percentage of our total investment portfolio in an unrealized loss position and their respective unrealized losses as a percentage of total unrealized losses.

	June 30, 2011		December 31, 2010
	Percentage of Total Investments in an Unrealized Loss Position	Percentage of Total Unrealized Losses	Percentage of Total Investments in an Unrealized Loss Position	Percentage of         Total         Unrealized         Losses
Fixed maturities	35  %	41  %	39  %	54  %
Perpetual securities:
Upper Tier II	5	6	9	10
Tier I	6	10	5	7
Total perpetual securities	11	16	14	17
Total	46  %	57  %	53  %	71  %

As of June 30, 2011, 78% of the $1.4 billion in unrealized losses on investments in the bank and financial institution sector, including perpetual securities, were related to investments that were investment grade, compared with 53% at December 31, 2010. This improvement is primarily due to the recognition of other-than-temporary impairments and sales of bank and financial institution securities during the first six months of 2011. Of the $13.9 billion in investments, at fair value, in the bank and financial institution sector in an unrealized loss position at June 30, 2011, only $.8 billion ($.3 billion in unrealized losses) were below investment grade. Two investments comprised nearly 83% of the $.3 billion unrealized loss. The remaining investments that comprised the unrealized loss were divided among eight issuers with average unrealized losses per investment of less than $7 million. We conduct our own independent credit analysis for investments in the bank and financial sector. Our assessment includes analysis of financial information, as well as consultation with the issuers from time to time. Based on our credit analysis, we have determined that the majority of the unrealized losses on the investments in this sector were caused by widening credit spreads, the downturn in the global economic environment and, to a lesser extent, changes in foreign exchange rates. Unrealized gains or losses related to prevailing interest rate environments are impacted by the remaining time to maturity of an investment. Assuming no credit-related factors develop, as investments near maturity, the unrealized gains or losses can be expected to diminish. Based on our credit analysis, we believe that our investments in this sector have the ability to service their obligations to us.

Other Corporate Investments

As of June 30, 2011, 61% of the unrealized losses on investments in the other corporate sector were related to investments that were investment grade, compared with 51% at December 31, 2010. For any credit-related declines in market

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value, we perform a more focused review of the related issuer’s credit ratings, financial statements and other available financial data, timeliness of payment, competitive environment and any other significant data related to the issuer. From those reviews, we evaluate the issuers’ continued ability to service our investments. We have determined that the majority of the unrealized losses on the investments in the other corporate sector was caused by widening credit spreads. Also impacting the unrealized losses in this sector is the decline in creditworthiness of certain issuers in the other corporate sector. Based on our credit analysis, we believe that our investments in this sector have the ability to service their obligation to us.

Perpetual Securities

At June 30, 2011, 93% of the unrealized losses on investments in perpetual securities were related to investments that were investment grade, compared with 83% at December 31, 2010. This improvement is primarily a result of the recognition of other-than-temporary impairments and sales of perpetual securities during the second quarter of 2011. The majority of our investments in Upper Tier II and Tier I perpetual securities were in highly rated global financial institutions. Upper Tier II securities have more debt-like characteristics than Tier I securities and are senior to Tier I securities, preferred stock, and common equity of the issuer. Conversely, Tier I securities have more equity-like characteristics, but are senior to the common equity of the issuer. They may also be senior to certain preferred shares, depending on the individual security, the issuer’s capital structure and the regulatory jurisdiction of the issuer.

Details of our holdings of perpetual securities were as follows:

Perpetual Securities

		June 30, 2011							December 31, 2010
(In millions)	Credit Rating	Amortized Cost		Fair Value		Unrealized Gain (Loss)			Amortized Cost		Fair Value		Unrealized Gain (Loss)
Upper Tier II:
	AA	$	192	$	204	$	12		$	190	$	201	$	11
	A		3,247		3,260		13			3,279		3,250		(29	)
	BBB		1,051		1,057		6			1,274		1,164		(110	)
	BB or lower		268		268		0			542		476		(66	)
Total Upper Tier II			4,758		4,789		31			5,285		5,091		(194	)
Tier I:
	A		601		524		(77	)		632		568		(64	)
	BBB		1,531		1,446		(85	)		1,386		1,296		(90	)
	BB or lower		369		344		(25	)		524		557		33
Total Tier I			2,501		2,314		(187	)		2,542		2,421		(121	)
Total		$	7,259	$	7,103	$	(156	)	$	7,827	$	7,512	$	(315	)

As discussed previously in the Investments Concentration section, a component of our efforts during the first half of 2011 to reduce risk in our investment portfolio included sales of certain investments in perpetual securities. With the exception of the Icelandic bank securities that we completely impaired in 2008, all of the perpetual securities we own were not in default on interest and principal payments at June 30, 2011. During the three-month period ended June 30, 2011, we wrote-off accrued interest income and stopped accruing further interest income for the Dexia S.A. Upper Tier II perpetual securities which have a deferred coupon and were impaired in the second quarter of 2011. Based on amortized cost as of June 30, 2011, the geographic breakdown of our perpetual securities by issuer was as follows: European countries, excluding the United Kingdom, (70%); the United Kingdom (10%); Japan (14%); and other (6%). To determine any credit-related declines in fair value, we perform a more focused review of the related issuer’s credit ratings, financial statements and other available financial data, timeliness of payment, competitive environment and any other significant data related to the issuer. From those reviews, we evaluate the issuer’s continued ability to service our investment.

We have determined that the majority of our unrealized losses in the perpetual security category has been principally due to widening credit spreads, largely as the result of the contraction of liquidity in the capital markets. However, there was some credit tightening in the first six months of 2011 that improved our net unrealized loss position. Based on our reviews, we concluded that the ability of the issuers to service our investment has not been compromised by these factors. Unrealized gains or losses related to prevailing interest rate environments are impacted by the remaining time to maturity of an investment. Assuming no credit-related factors develop, as the investments near economic maturity, the unrealized gains or losses can be expected to diminish. Based on our credit analyses, we believe that our investments in this sector have the ability to service their obligation to us.

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Variable Interest Entities (VIEs)

As discussed in Note 1, effective January 1, 2010, we have consolidated all of the components of each former QSPE investment, including a fixed-maturity or perpetual investment and a corresponding derivative transaction. Our risk of loss over the life of each investment is limited to the amount of our original investment. In addition, new criteria for determining the primary beneficiary of a VIE that was effective January 1, 2010, resulted in the consolidation of additional VIE investments. The following table details our investments in VIEs.

Investments in Variable Interest Entities

	June 30, 2011				December 31, 2010
(In millions)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
VIEs:
Consolidated:
Total VIEs consolidated	$	7,104	$	7,247	$	7,201	$	7,363
Not consolidated:
CDOs		4		4		5		5
Other		13,044		13,191		13,914		13,214
Total VIEs not consolidated		13,048		13,195		13,919		13,219
Total VIEs	$	20,152	$	20,442	$	21,120	$	20,582

As a condition to our involvement or investment in a VIE, we enter into certain protective rights and covenants that preclude changes in the structure of the VIE that would alter the creditworthiness of our investment or our beneficial interest in the VIE.

Our involvement with all of the VIEs in which we have an interest is passive in nature, and we are not the arranger of these entities. Except as relates to our review and evaluation of the structure of these VIEs in the normal course of our investment decision-making process, we have not been involved in establishing these entities. Further, we have not been nor are we required to purchase the securities issued in the future by any of these VIEs.

Our ownership interest in the VIEs is limited to holding the obligations issued by them. All of the VIEs in which we invest are static with respect to funding and have no ongoing forms of funding after the initial funding date. We have no direct or contingent obligations to fund the limited activities of these VIEs, nor do we have any direct or indirect financial guarantees related to the limited activities of these VIEs. We have not provided any assistance or any other type of financing support to any of the VIEs we invest in, nor do we have any intention to do so in the future. The weighted-average lives of our notes are very similar to the underlying collateral held by these VIEs where applicable.

Our risk of loss related to our interests in any of our VIEs is limited to our investment in the debt securities issued by them.

VIEs-Consolidated

We are substantively the only investor in the consolidated VIEs listed in the table above. As the sole investor in these VIEs, we have the power to direct the activities of a variable interest entity that most significantly impact the entity’s economic performance and are therefore considered to be the primary beneficiary of the VIEs that we consolidate. We also participate in substantially all of the variability created by these VIEs. The activities of these VIEs are limited to holding debt and perpetual securities and interest rate, foreign currency, and/or credit default swaps (CDSs), as appropriate, and utilizing the cash flows from these securities to service our investment. Neither we nor any of our creditors are able to obtain the underlying collateral of the VIEs unless there is an event of default or other specified event. For those VIEs that contain a swap, we are not a direct counterparty to the swap contracts and have no control over them. Our loss exposure to these VIEs is limited to our original investment. Our consolidated VIEs do not rely on outside or ongoing sources of funding to support their activities beyond the underlying collateral and swap contracts, if applicable. With the exception of our investment in senior secured bank loans through a unit trust structure that we began investing in during the second quarter of 2011, the underlying collateral assets and funding of our consolidated VIEs are generally static in nature and the underlying collateral and the reference corporate entities covered by any CDS contracts are all investment grade at the time of issuance.

We are exposed to credit losses within any consolidated collateralized debt obligations (CDOs) that could result in principal losses to our investments. We have mitigated our risk of credit loss through the structure of the VIE,

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which contractually requires the subordinated tranches within these VIEs to absorb the majority of the expected losses from the underlying credit default swaps. We currently own only senior CDO tranches. Based on our statistical analysis models, each of these VIEs can sustain a reasonable number of defaults in the underlying reference corporate entities in the CDSs with no loss to our investment.

VIEs-Not Consolidated

With the exception of one CDO investment, the VIEs that we are not required to consolidate are investments that are limited to loans in the form of debt obligations from the VIEs that are irrevocably and unconditionally guaranteed by their corporate parents. These VIEs are the primary financing vehicles used by their corporate sponsors to raise financing in the international capital markets. The variable interests created by these VIEs are principally or solely a result of the debt instruments issued by them. We do not have the power to direct the activities that most significantly impact the entity’s economic performance, nor do we have (1) the obligation to absorb losses of the entity or (2) the right to receive benefits from the entity. As such, we are not the primary beneficiary of these VIEs and are therefore not required to consolidate them. These VIE investments are comprised of securities from 167 separate issuers which have an average credit rating of A.

Securities Lending

We lend fixed-maturity securities to financial institutions in short-term security-lending transactions. These short-term security-lending arrangements increase investment income with minimal risk. Our security lending policy requires that the fair value of the securities and/or unrestricted cash received as collateral be 102% or more of the fair value of the loaned securities. The following table presents our security loans outstanding and the corresponding collateral held:

(In millions)	June 30,     2011		December 31,     2010
Security loans outstanding, fair value	$	328	$	186
Cash collateral on loaned securities		338		191

All security lending agreements are callable by us at any time.

4.   DERIVATIVE INSTRUMENTS

We do not use derivative financial instruments for trading purposes, nor do we engage in leveraged derivative transactions. The majority of our freestanding derivatives are interest rate, foreign currency and credit default swaps that are associated with investments in special-purpose entities, including VIEs where we are the primary beneficiary. The remaining derivatives are interest rate swaps associated with our variable interest rate yen-denominated debt.

Derivative Types

Interest rate and credit default swaps involve the periodic exchange of cash flows with other parties, at specified intervals, calculated using agreed upon rates or other financial variables and notional principal amounts. Generally, no cash or principal payments are exchanged at the inception of the contract. Typically, at the time a swap is entered into, the cash flow streams exchanged by the counterparties are equal in value. Interest rate swaps are primarily used to convert interest receipts on floating-rate fixed-maturity securities contracts to fixed rates. These derivatives are predominantly used to better match cash receipts from assets with cash disbursements required to fund liabilities.

Credit default swaps are used to assume credit risk related to an individual security or an index. These contracts entitle the consolidated VIE to receive a periodic fee in exchange for an obligation to compensate the derivative counterparty should the referenced security issuers experience a credit event, as defined in the contract. The consolidated VIE is also exposed to credit risk due to embedded derivatives associated with credit-linked notes.

Foreign currency swaps exchange an initial principal amount in two currencies, agreeing to re-exchange the currencies at a future date, at an agreed upon exchange rate. There may also be a periodic exchange of payments at specified intervals based on the agreed upon rates and notional amounts. Foreign currency swaps are used primarily in the consolidated VIEs in our Aflac Japan portfolio to convert foreign denominated cash flows to yen, the functional currency of Aflac Japan, in order to minimize cash flow fluctuations.

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Credit Risk Assumed through Derivatives

Our exposure to credit risk in the event of nonperformance by counterparties to our interest rate swaps associated with our variable interest rate Uridashi notes as of June 30, 2011, was immaterial. For the interest rate, foreign currency, and credit default swaps associated with our VIE investments for which we are the primary beneficiary, we do not bear the risk of loss for counterparty default. We are not a direct counterparty to those contracts.

As a result of consolidation of certain VIE investments on January 1, 2010, we began recognizing related credit default swaps that assume credit risk from an asset pool. Those consolidated VIEs will receive periodic payments based on an agreed upon rate and notional amount and will only make a payment by delivery of associated collateral, which consists of highly rated asset-backed securities, if there is a credit event. A credit event payment will typically be equal to the notional value of the swap contract less the value of the referenced obligations. A credit event is generally defined as a default on contractually obligated interest or principal payments or bankruptcy of the referenced entity. The credit default swaps in which the consolidated VIE assumes credit risk primarily reference investment grade baskets. The diversified portfolios of corporate issuers are established within sector concentration limits.

The following tables present the maximum potential risk, fair value, weighted-average years to maturity, and underlying referenced credit obligation type for credit default swaps.

	June 30, 2011
	Less than one year				One to three years				Three to five years						Five to ten years						Total
(In millions)	Maximum potential risk		Estimated fair value		Maximum potential risk		Estimated fair value		Maximum potential risk			Estimated fair value			Maximum potential risk			Estimated fair value			Maximum potential risk			Estimated fair value
Index exposure:
Corporate bonds	$	0	$	0	$	0	$	0	$	(141	)	$	(11	)	$	(418	)	$	(242	)	$	(559	)	$	(253	)

	December 31, 2010
	Less than one year				One to three years				Three to five years						Five to ten years						Total
(In millions)	Maximum potential risk		Estimated fair value		Maximum potential risk		Estimated fair value		Maximum potential risk			Estimated fair value			Maximum potential risk			Estimated fair value			Maximum potential risk			Estimated fair value
Index exposure:
Corporate bonds	$	0	$	0	$	0	$	0	$	(340	)	$	(118	)	$	(416	)	$	(225	)	$	(756	)	$	(343	)

Derivative Balance Sheet Classification

The tables below summarize the balance sheet classification of our derivative fair value amounts, as well as the gross asset and liability fair value amounts. The fair value amounts presented do not include income accruals. The notional amount of derivative contracts represents the basis upon which pay or receive amounts are calculated. Notional amounts are not reflective of credit risk.

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	June 30, 2011
(In millions)	Net Derivatives					Asset Derivatives		Liability Derivatives
Hedge Designation/ Derivative Type	Notional Amount		Fair Value			Fair Value		Fair Value
Cash flow hedges:
Interest rate swaps	$	248	$	(1)		$	0	$	(1)
Foreign currency swaps		575		71			94		(23)
Total cash flow hedges		823		70			94		(24)
Non-qualifying strategies:
Interest rate swaps		546		121			125		(4)
Foreign currency swaps		3,927		(27)			276		(303)
Credit default swaps		559		(253)			0		(253)
Total non-qualifying strategies		5,032		(159)			401		(560)
Total cash flow hedges and non-qualifying strategies	$	5,855	$	(89)		$	495	$	(584)
Balance Sheet Location
Other assets	$	2,267	$	495		$	495	$	0
Other liabilities		3,588		(584)			0		(584)
Total derivatives	$	5,855	$	(89)		$	495	$	(584)
	December 31, 2010
(In millions)	Net Derivatives					Asset Derivatives		Liability Derivatives
Hedge Designation/ Derivative Type	Notional Amount		Fair Value			Fair Value		Fair Value
Cash flow hedges:
Interest rate swaps	$	245	$	(2)		$	0	$	(2)
Foreign currency swaps		615		170			180		(10)
Total cash flow hedges		860		168			180		(12)
Non-qualifying strategies:
Interest rate swaps		743		56			124		(68)
Foreign currency swaps		3,815		(58)			260		(318)
Credit default swaps		756		(343)			0		(343)
Total non-qualifying strategies		5,314		(345)			384		(729)
Total cash flow hedges and non-qualifying strategies	$	6,174	$	(177)		$	564	$	(741)
Balance Sheet Location
Other assets	$	2,364	$	564		$	564	$	0
Other liabilities		3,810		(741	)		0		(741	)
Total derivatives	$	6,174	$	(177	)	$	564	$	(741	)

Hedging

Certain of our consolidated VIEs have interest rate and/or foreign currency swaps that qualify for hedge accounting treatment. For those that have qualified, we have designated the derivative as a hedge of the variability in cash flows of a forecasted transaction or of amounts to be received or paid related to a recognized asset (“cash flow” hedge). We expect to continue this hedging activity for a weighted-average period of approximately 25 years. The remaining derivatives in our consolidated VIEs that have not qualified for hedge accounting have been designated as held for other investment purposes (“non-qualifying strategies”).

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We have interest rate swap agreements related to our 20 billion yen variable interest rate Uridashi notes that will mature in September 2011 and our 5.5 billion yen variable interest rate Samurai notes that we issued subsequent to the end of the second quarter in July 2011 (see Note 6). By entering into these contracts, we swapped the variable interest rate to a fixed interest rate of 1.52% for the Uridashi notes and 1.475% for the Samurai notes. We have designated these interest rate swaps as a hedge of the variability in our interest cash flows associated with the respective variable interest rate notes. The notional amounts and terms of the swaps match the principal amount and terms of the corresponding variable interest rate notes, and the swaps had no value at inception. Changes in the fair value of the swap contracts are recorded in other comprehensive income so long as the hedge is deemed effective. Should any portion of the hedge be deemed ineffective, that value would be reported in net earnings.

Hedge Documentation and Effectiveness Testing

To qualify for hedge accounting treatment, a derivative must be highly effective in mitigating the designated changes in cash flow of the hedged item. At hedge inception, we formally document all relationships between hedging instruments and hedged items, as well as our risk-management objective and strategy for undertaking each hedge transaction. The documentation process includes linking derivatives that are designated as cash flow hedges to specific assets or liabilities on the statement of financial position or to specific forecasted transactions and defining the effectiveness and ineffectiveness testing methods to be used. At the hedge’s inception and on an ongoing quarterly basis, we also formally assess whether the derivatives that are used in hedging transactions have been and are expected to continue to be highly effective in offsetting changes in cash flows of hedged items. Hedge effectiveness is assessed using qualitative and quantitative methods. Qualitative methods may include the comparison of critical terms of the derivative to the hedged item. Quantitative methods include regression or other statistical analysis of changes in cash flows associated with the hedge relationship. Hedge ineffectiveness of the hedge relationships is measured each reporting period using the “Hypothetical Derivative Method.”

For derivative instruments that are designated and qualify as cash flow hedges, the effective portion of the gain or loss on the derivative is reported as a component of other comprehensive income and reclassified into earnings in the same period or periods during which the hedged transaction affects earnings. Gains and losses on the derivative representing hedge ineffectiveness are recognized in current earnings as a component of realized investment gains (losses). All components of each derivative’s gain or loss were included in the assessment of hedge effectiveness.

Discontinuance of Hedge Accounting

We discontinue hedge accounting prospectively when (1) it is determined that the derivative is no longer highly effective in offsetting changes in the cash flows of a hedged item; (2) the derivative is de-designated as a hedging instrument; or (3) the derivative expires or is sold, terminated or exercised.

When hedge accounting is discontinued on a cash-flow hedge, including those where the derivative is sold, terminated or exercised, amounts previously deferred in other comprehensive income are reclassified into earnings when earnings are impacted by the cash flow of the hedged item.

Cash Flow Hedges

The following tables present the components of the gain or loss on derivatives that qualify as cash flow hedges:

Derivatives in Cash Flow Hedging Relationships

(In millions)	Gain (Loss) Recognized in Other Comprehensive Income on  Derivative (Effective Portion)					Net Realized Investment Gains (Losses) Recognized in Income on Derivative (Ineffective Portion)
	Three Months Ended June 30, 2011		Six Months Ended June 30, 2011			Three Months Ended June 30, 2011		Six Months Ended June 30, 2011
Interest rate swaps	$	0	$	1		$	0	$	0
Foreign currency swaps		17		(39	)		2		(2	)
Total	$	17	$	(38	)	$	2	$	(2	)

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Derivatives in Cash Flow Hedging Relationships

(In millions)	Gain (Loss) Recognized in Other Comprehensive Income on  Derivative (Effective Portion)					Net Realized Investment Gains (Losses) Recognized in Income on Derivative (Ineffective Portion)
	Three Months Ended June 30, 2010		Six Months Ended June 30, 2010			Three Months Ended June 30, 2010		Six Months Ended June 30, 2010
Interest rate swaps	$	0	$	1		$	0	$	0
Foreign currency swaps		8		(3	)		3		0
Total	$	8	$	(2	)	$	3	$	0

There was no gain or loss reclassified from accumulated other comprehensive income into earnings related to our cash flow hedges for the three- and six-month periods ended June 30, 2011 and 2010. As of June 30, 2011, pretax deferred net gains on derivative instruments recorded in accumulated other comprehensive income that are expected to be reclassified to earnings during the next twelve months are immaterial.

Non-qualifying Strategies

For our derivative instruments in consolidated VIEs that do not qualify for hedge accounting treatment, all changes in their fair value are reported in current period earnings as net realized investment gains (losses). The following table presents the gain or loss recognized in income on non-qualifying strategies:

Non-qualifying Strategies

Gain (Loss) Recognized within Net Realized Investment Gains (Losses)

(In millions)	Three Months Ended June 30, 2011			Six Months Ended June 30, 2011
Interest rate swaps	$	4		$	(1	)
Foreign currency swaps		3			(26	)
Credit default swaps		(43	)		(38	)
Other		9			12
Total	$	(27	)	$	(53	)

Non-qualifying Strategies

Gain (Loss) Recognized within Net Realized Investment Gains (Losses)

(In millions)	Three Months Ended June 30, 2010			Six Months Ended June 30, 2010
Interest rate swaps	$	8		$	3
Foreign currency swaps		(48	)		(44	)
Credit default swaps		(66	)		(45	)
Total	$	(106	)	$	(86	)

The amount of gain or loss recognized in earnings for our VIEs is attributable to the derivatives in those investment structures. While the change in value of the swaps is recorded through current period earnings, the change in value of the available-for-sale fixed income or perpetual securities associated with these swaps is recorded through other comprehensive income.

Nonderivative Hedges

Our primary exposure to be hedged is our net investment in Aflac Japan, which is affected by changes in the yen/dollar exchange rate. To mitigate this exposure, we have taken the following courses of action. First, Aflac Japan maintains an investment portfolio of dollar-denominated securities on behalf of Aflac U.S., which serves as an economic currency hedge of a portion of our investment in Aflac Japan. The functional currency for these investments is the U.S. dollar. The related investment income and realized/unrealized investment gains and losses are also denominated in U.S. dollars. The foreign exchange gains and losses related to this portfolio are taxable in Japan and the U.S. when the

35

securities mature or are sold. Until maturity or sale, deferred tax expense or benefit associated with the foreign exchange gains or losses are recognized in other comprehensive income.

Second, we have designated the Parent Company’s yen-denominated liabilities (Samurai and Uridashi notes and yen-denominated loans - see Note 6) as nonderivative hedges of the foreign currency exposure of our investment in Aflac Japan. Our net investment hedge was effective during the six-month periods ended June 30, 2011, and 2010; therefore, there was no impact on net earnings during those periods for the foreign exchange effect of the designated Parent Company yen-denominated liabilities. There was no gain or loss reclassified from accumulated other comprehensive income into earnings related to our net investment hedge for the six-month periods ended June 30, 2011 and 2010.

For additional information on our financial instruments, see the accompanying Notes 1, 3 and 5 and Notes 1, 3 and 5 of the Notes to the Consolidated Financial Statements in our annual report to shareholders for the year ended December 31, 2010.

5.  FAIR VALUE MEASUREMENTS

We determine the fair values of our debt, derivative, perpetual and privately issued equity securities primarily using three pricing approaches or techniques: quoted market prices readily available from public exchange markets, a discounted cash flow (DCF) pricing model, and price quotes we obtain from outside brokers.

Our DCF pricing model incorporates an option adjusted spread and utilizes various market inputs we obtain from both active and inactive markets. The estimated fair values developed by the DCF pricing model is most sensitive to prevailing credit spreads, the level of interest rates (yields) and interest rate volatility. Prior to March 31, 2010, credit spreads were derived based on pricing data obtained from investment brokers and took into account the current yield curve, time to maturity and subordination levels for similar securities or classes of securities. Subsequent to March 31, 2010, credit spreads were derived from using a bond index to create a credit spread matrix which takes into account the current credit spread, ratings and remaining time to maturity, and subordination levels for securities that are included in the bond index. Our DCF pricing model is based on a widely used global bond index that is comprised of investments in active markets. The index provides a broad-based measure of the global fixed-income bond market. This bond index covers bonds issued by European and American issuers, which account for the majority of bonds that we hold. We validate the reliability of the DCF pricing model periodically by using the model to price investments for which there are quoted market prices from active and inactive markets or, in the alternative, are quoted by our custodian for the same or similar securities.

The pricing data and market quotes we obtain from outside sources are reviewed internally for reasonableness. If a fair value appears unreasonable, the inputs are re-examined and the value is confirmed or revised.

In recent years, on the price quotes we obtain from outside brokers, we have noted a continued reduction in the availability of pricing data from this source. As a result, we have noted that available pricing data has become more volatile. The reduction in available pricing sources coupled with the increase in price volatility has increased the degree of management judgment required in the final determination of fair values. We assess the reasonableness of the pricing data we receive by comparing it to relevant market indices and other performance measurements.

Fair Value Hierarchy

GAAP specifies a hierarchy of valuation techniques based on whether the inputs to those valuation techniques are observable or unobservable. These two types of inputs create three valuation hierarchy levels. Level 1 valuations reflect quoted market prices for identical assets or liabilities in active markets. Level 2 valuations reflect quoted market prices for similar assets or liabilities in an active market, quoted market prices for identical or similar assets or liabilities in non-active markets or model-derived valuations in which all significant valuation inputs are observable in active markets. Level 3 valuations reflect valuations in which one or more of the significant valuation inputs are not observable in an active market. The vast majority of our financial instruments subject to the classification provisions of GAAP relate to our investment securities classified as securities available for sale in our investment portfolio. We determine the fair value of our securities available for sale using several sources or techniques based on the type and nature of the investment securities.

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The following tables present the fair value hierarchy levels of the Company’s assets and liabilities that are measured at fair value on a recurring basis.

	June 30, 2011
(In millions)	Level 1		Level 2		Level 3		Total
Assets:
Fixed maturities:
Government and agencies	$	19,189	$	678	$	0	$	19,867
Municipalities		0		1,025		0		1,025
Mortgage- and asset-backed securities		0		1,241		257		1,498
Public utilities		0		5,584		0		5,584
Collateralized debt obligations		0		0		4		4
Sovereign and supranational		0		2,277		0		2,277
Banks/financial institutions		0		7,518		398		7,916
Other corporate		0		14,335		0		14,335
Total fixed maturities		19,189		32,658		659		52,506
Perpetual securities:
Banks/financial institutions		0		6,746		0		6,746
Other corporate		0		357		0		357
Total perpetual securities		0		7,103		0		7,103
Equity securities		14		5		4		23
Other assets:
Interest rate swaps		0		125		0		125
Foreign currency swaps		0		150		220		370
Total other assets		0		275		220		495
Total assets	$	19,203	$	40,041	$	883	$	60,127
Liabilities:
Interest rate swaps	$	0	$	5	$	0	$	5
Foreign currency swaps		0		270		56		326
Credit default swaps		0		0		253		253
Total liabilities	$	0	$	275	$	309	$	584

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	December 31, 2010
(In millions)	Level 1		Level 2		Level 3		Total
Assets:
Fixed maturities:
Government and agencies	$	16,534	$	679	$	0	$	17,213
Municipalities		0		973		0		973
Mortgage- and asset-backed securities		0		1,539		267		1,806
Public utilities		0		5,369		0		5,369
Collateralized debt obligations		0		0		5		5
Sovereign and supranational		0		1,394		0		1,394
Banks/financial institutions		0		8,047		386		8,433
Other corporate		0		13,162		0		13,162
Total fixed maturities		16,534		31,163		658		48,355
Perpetual securities:
Banks/financial institutions		0		7,169		0		7,169
Other corporate		0		343		0		343
Total perpetual securities		0		7,512		0		7,512
Equity securities		14		5		4		23
Other assets:
Interest rate swaps		0		124		0		124
Foreign currency swaps		0		151		289		440
Total other assets		0		275		289		564
Total assets	$	16,548	$	38,955	$	951	$	56,454
Liabilities:
Interest rate swaps	$	0	$	70	$	0	$	70
Foreign currency swaps		0		280		48		328
Credit default swaps		0		0		343		343
Total liabilities	$	0	$	350	$	391	$	741

Approximately 45% of our fixed income and perpetual investments classified as Level 2 are valued by obtaining quoted market prices from our investment custodian. The custodian obtains price quotes from various pricing services that estimate fair values based on observable market transactions for similar investments in active markets, market transactions for the same investments in inactive markets or other observable market data where available.

The fair value of approximately 51% of our Level 2 fixed income and perpetual investments is determined using our DCF pricing model. The significant valuation inputs to the DCF model are obtained from, or corroborated by, observable market sources from both active and inactive markets.

For the remaining Level 2 investments that are not quoted by our custodian and cannot be priced under the DCF pricing model, we obtain specific broker quotes from up to three outside securities brokers and generally use the average of the quotes to estimate the fair value of the securities.

We use derivative instruments to manage the risk associated with certain assets. However, the derivative instrument may not be classified with the same fair value hierarchy as the associated asset. Derivative instruments are reported in Level 2 of the fair value hierarchy, except CDSs and certain foreign currency swaps which are classified as Level 3.

The interest rate and certain foreign currency derivative instruments classified as Level 2 were priced by broker quotations using inputs that are observable in the market. Inputs used to value derivatives include, but are not limited to, interest rates, foreign currency forward and spot rates, and interest volatility. For derivatives associated with any of our VIEs where we are the primary beneficiary, we are not the direct counterparty to the swap contracts. As a result, the fair value measurements provided by the broker incorporate the credit risk of the collateral associated with the VIE and counterparty credit risk.

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The fair value of our interest rate swap contracts associated with our variable interest rate yen-denominated debt is based on the amount we would expect to receive or pay to terminate the swaps. The prices used to determine the value of the swaps are obtained from the respective swap counterparties and take into account current interest rates, duration and credit risk.

The fixed maturities, perpetual securities and derivatives classified as Level 3 consist of securities for which there are limited or no observable valuation inputs. We estimate the fair value of these securities by obtaining broker quotes from a limited number of brokers. These brokers base their quotes on a combination of their knowledge of the current pricing environment and market conditions. We consider these inputs unobservable. The equity securities classified in Level 3 are related to investments in Japanese businesses, each of which are insignificant and in the aggregate are immaterial. Because fair values for these investments are not readily available, we carry them at their original cost. We review each of these investments periodically and, in the event we determine that any are other-than-temporarily impaired, we write them down to their estimated fair value at that time.

Historically, we have not adjusted the quotes or prices we obtain from the brokers and pricing services we use.

The following tables present the changes in our available-for-sale investments and derivatives classified as Level 3.

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Three Months Ended June 30, 2011
	Fixed Maturities															Perpetual Securities		Equity Securities		Derivatives
(In millions)	Mortgage- and Asset- Backed Securities			Public Utilities		Collateralized Debt Obligations			Sovereign and Supranational		Banks/ Financial Institutions			Other Corporate		Banks/ Financial Institutions				Foreign Currency Swaps		Credit Default Swaps			Total
Balance, beginning of period	$	248		$	0	$	5		$	0	$	420		$	0	$	0	$	4	$	126	$	(338	)	$	465
Realized gains or losses included in earnings		0			0		(1	)		0		0			0		0		0		25		(43	)		(19	)
Unrealized gains or losses included in other comprehensive income		12			0		0			0		(22	)		0		0		0		13		0			3
Purchases, issuances, sales and settlements:
Purchases		0			0		0			0		0			0		0		0		0		0			0
Issuances		0			0		0			0		0			0		0		0		0		0			0
Sales		0			0		0			0		0			0		0		0		0		0			0
Settlements		(3	)		0		0			0		0			0		0		0		0		128			125
Transfers into Level 3		0			0		0			0		0			0		0		0		0		0			0
Transfers out of Level 3		0			0		0			0		0			0		0		0		0		0			0
Balance, end of period	$	257		$	0	$	4		$	0	$	398		$	0	$	0	$	4	$	164	$	(253	)	$	574
Change in unrealized gains (losses) still held(1)	$	0		$	0	$	(1	)	$	0	$	0		$	0	$	0	$	0	$	25	$	(7	)	$	17

⁽¹⁾  Represents the amount of total gains or losses for the period, included in earnings, attributable to the change in unrealized gains (losses) relating to assets classified as Level 3 that were still held at June 30, 2011

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Three Months Ended June 30, 2010
	Fixed Maturities																	Perpetual Securities			Equity Securities			Derivatives
(In millions)	Mortgage- and asset- backed securities			Public utilities			Collateralized debt obligations		Sovereign and supranational			Banks/ financial institutions			Other corporate			Banks/ financial institutions						Credit default swaps			Total
Balance, beginning of period	$	63		$	488		$	4	$	298		$	1,103		$	1,253		$	1,695		$	9		$	(291	)	$	4,622
Realized gains or losses included in earnings		0			0			0		0			0			0			125			0			(66	)		59
Unrealized gains or losses included in other comprehensive income		1			0			0		0			1			1			(125	)		0			0			(122	)
Purchases, issuances, sales and settlements:
Purchases		0			0			0		0			0			0			0			0			0			0
Issuances		0			0			0		0			0			0			0			0			0			0
Sales		(1	)		(2	)		0		0			0			0			(531	)		0			0			(534	)
Settlements		0			0			0		0			0			0			0			0			0			0
Transfers into Level 3(1)		219			0			0		0			330			0			0			0			0			549
Transfers out of Level 3(2)		0			(459	)		0		(298	)		(1,082	)		(1,202	)		(1,164	)		(5	)		0			(4,210	)
Balance, end of period	$	282		$	27		$	4	$	0		$	352		$	52		$	0		$	4		$	(357	)	$	364
Change in unrealized gains (losses) still held(3)	$	0		$	0		$	0	$	0		$	0		$	0		$	0		$	0		$	(66	)	$	(66	)

⁽¹⁾  Due to a lack of visibility to observe significant inputs to price and credit downgrades of respective issuers of securities to below investment grade

⁽²⁾  A result of changing our pricing methodology to using a pricing index for estimating fair value instead of obtaining pricing of the securities from brokers or arrangers

⁽³⁾ Represents the amount of total gains or losses for the period, included in earnings, attributable to the change in unrealized gains (losses) relating to assets classified as Level 3 that were still held at June 30, 2010

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Six Months Ended June 30, 2011
	Fixed Maturities														Perpetual Securities		Equity Securities		Derivatives
(In millions)	Mortgage- and Asset- Backed Securities			Public Utilities		Collateralized Debt Obligations			Sovereign and Supranational		Banks/ Financial Institutions		Other Corporate		Banks/ Financial Institutions				Foreign Currency Swaps			Credit Default Swaps			Total
Balance, beginning of period	$	267		$	0	$	5		$	0	$	386	$	0	$	0	$	4	$	241		$	(343	)	$	560
Realized gains or losses included in earnings		(6	)		0		(1	)		0		1		0		0		0		(39	)		(38	)		(83	)
Unrealized gains or losses included in other comprehensive income		2			0		0			0		11		0		0		0		(38	)		0			(25	)
Purchases, issuances, sales and settlements:
Purchases		0			0		0			0		0		0		0		0		0			0			0
Issuances		0			0		0			0		0		0		0		0		0			0			0
Sales		0			0		0			0		0		0		0		0		0			0			0
Settlements		(6	)		0		0			0		0		0		0		0		0			128			122
Transfers into Level 3		0			0		0			0		0		0		0		0		0			0			0
Transfers out of Level 3		0			0		0			0		0		0		0		0		0			0			0
Balance, end of period	$	257		$	0	$	4		$	0	$	398	$	0	$	0	$	4	$	164		$	(253	)	$	574
Change in unrealized gains (losses) still held(1)	$	(6	)	$	0	$	(1	)	$	0	$	1	$	0	$	0	$	0	$	(39	)	$	(15	)	$	(60	)

⁽¹⁾  Represents the amount of total gains or losses for the period, included in earnings, attributable to the change in unrealized gains (losses) relating to assets classified as Level 3 that were still held at June 30, 2011

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Six Months Ended June 30, 2010
	Fixed Maturities																		Perpetual Securities			Equity Securities			Derivatives
(In millions)	Mortgage- and asset- backed securities			Public utilities			Collateralized debt obligations			Sovereign and supranational			Banks/ financial institutions			Other corporate			Banks/ financial institutions						Credit default swaps			Total
Balance, beginning of period	$	62		$	497		$	267		$	293		$	1,240		$	1,248		$	1,441		$	9		$	0		$	5,057
Effect of change in accounting principle (1)		0			0			(263	)		0			0			0			0			0			(312	)		(575	)
Revised balance, beginning of period		62			497			4			293			1,240			1,248			1,441			9			(312	)		4,482
Realized gains or losses included in earnings		0			0			0			0			5			0			108			0			(45	)		68
Unrealized gains or losses included in other comprehensive income		2			(9	)		0			5			34			6			51			0			0			89
Purchases, issuances, sales and settlements:
Purchases		0			0			0			0			0			0			0			0			0			0
Issuances		0			0			0			0			0			0			0			0			0			0
Sales		(1	)		(2	)		0			0			(175	)		0			(585	)		0			0			(763	)
Settlements		0			0			0			0			0			0			0			0			0			0
Transfers into Level 3(2)		219			0			0			0			330			0			149			0			0			698
Transfers out of Level 3(3)		0			(459	)		0			(298	)		(1,082	)		(1,202	)		(1,164	)		(5	)		0			(4,210	)
Balance, end of period	$	282		$	27		$	4		$	0		$	352		$	52		$	0		$	4		$	(357	)	$	364
Change in unrealized gains (losses) still held(4)	$	0		$	0		$	0		$	0		$	0		$	0		$	0		$	0		$	(45	)	$	(45	)

⁽¹⁾  Change in accounting for VIEs effective January 1, 2010. See Notes 1, 3, and 4 for additional information.

⁽²⁾  Due to a lack of visibility to observe significant inputs to price and credit downgrades of respective issuers of securities to below investment grade

⁽³⁾  A result of changing our pricing methodology to using a pricing index for estimating fair value instead of obtaining pricing of the securities from brokers or arrangers

⁽⁴⁾ Represents the amount of total gains or losses for the period, included in earnings, attributable to the change in unrealized gains (losses) relating to assets classified as Level 3 that were still held at June 30, 2010

As discussed in Notes 1 and 3, we adopted new accounting guidance on VIEs effective January 1, 2010, and as a result have consolidated certain VIE investments. Upon consolidation, the beneficial interest was derecognized and the underlying securities and derivatives were recognized. In many cases, the fair value hierarchy level differed between the

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original beneficial interest asset and the underlying securities that are now being recognized. In the Level 3 rollforward, we have separately disclosed the impact of consolidating these VIE investments that were previously categorized as Level 3 and now the underlying securities are Level 2. As noted in the Level 3 rollforward above, the CDSs which are separately recognized as a result of this change in accounting are reported as Level 3 investments. In addition, approximately $1.0 billion of Level 2 investments were reclassified upon the adoption of this guidance, and their underlying securities are being reported as Level 1 as of January 1, 2010.

The significant valuation inputs that are used in the valuation process for the below-investment-grade, callable RDC and private placement investments classified as Level 3 include forward exchange rates, yen swap rates, dollar swap rates, interest rate volatilities, credit spread data on specific issuers, assumed default and default recovery rates, certain probability assumptions, and call option data.

Some of these securities require the calculation of a theoretical forward exchange rate which is developed by using yen swap rates, U.S. dollar swap rates, interest rate volatilities, and spot exchange rates. The forward exchange rate is then used to convert all future dollar cash flows of the bond, where applicable, into yen cash flows. Additionally, credit spreads for the individual issuers are key valuation inputs of these securities. Finally, in pricing securities with a call option, the assumptions regarding interest rates in the U.S. and Japan are considered to be significant valuation inputs. Collectively, these valuation inputs are included to estimate the fair values of these securities at each reporting date.

In obtaining the above valuation inputs, we have determined that certain pricing assumptions and data used by our pricing sources are becoming increasingly more difficult to validate or corroborate by the market and/or appear to be internally developed rather than observed in or corroborated by the market. The use of these unobservable valuation inputs causes more subjectivity in the valuation process for these securities and consequently, causes more volatility in their estimated fair values.

Fair Value of Financial Instruments

The carrying values and estimated fair values of the Company’s financial instruments were as follows:

	June 30, 2011				December 31, 2010
(In millions)	Carrying Value		Fair Value		Carrying Value		Fair Value
Assets:
Fixed-maturity securities	$	78,669	$	78,785	$	72,570	$	72,999
Fixed-maturity securities - consolidated variable interest entities		5,745		5,703		5,869		5,825
Perpetual securities		5,559		5,559		5,974		5,974
Perpetual securities - consolidated variable interest entities		1,544		1,544		1,538		1,538
Equity securities		23		23		23		23
Interest rate, foreign currency, and credit default swaps		495		495		564		564
Liabilities:
Notes payable (excluding capitalized leases)		3,042		3,283		3,032		3,248
Interest rate, foreign currency, and credit default swaps		584		584		741		741
Obligation to Japanese policyholder protection corporation		89		89		108		108

As mentioned previously, we determine the fair values of our debt, perpetual and privately issued equity securities and our derivatives using three basic pricing approaches or techniques: quoted market prices readily available from public exchange markets, pricing models, and price quotes we obtain from outside brokers.

The fair values of notes payable with fixed interest rates were obtained from an independent financial information service. The fair value of the obligation to the Japanese policyholder protection corporation is our estimated share of the industry’s obligation calculated on a pro rata basis by projecting our percentage of the industry’s premiums and reserves and applying that percentage to the total industry obligation payable in future years.

The carrying amounts for cash and cash equivalents, receivables, accrued investment income, accounts payable, cash collateral and payables for security transactions approximated their fair values due to the short-term nature of these instruments. Consequently, such instruments are not included in the above table. The preceding table also excludes liabilities for future policy benefits and unpaid policy claims as these liabilities are not financial instruments as defined by GAAP.

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DCF Sensitivity

Our DCF pricing model utilizes various market inputs we obtain from both active and inactive markets. The estimated fair values developed by the DCF pricing models are most sensitive to prevailing credit spreads, the level of interest rates (yields), and, for our callable securities, interest rate volatility. Management believes that under normal market conditions, a movement of 50 basis points (bps) in interest rates and credit spreads and 50 percent in interest rate volatility would be sufficiently reasonable stresses for these risk factors. Therefore, we selected these magnitudes of movements and provided both upward and downward movements in these key assumptions used to estimate fair values. Since the changes in fair value are relatively linear, readers of these financial statements can make their own judgments as to the movement in interest rates and the change in fair value based upon this data. The following scenarios provide a view of the sensitivity of our securities priced by our DCF pricing model.

The fair values of our available-for-sale fixed-maturity and perpetual securities valued by our DCF pricing model totaled $20.3 billion at June 30, 2011. The estimated effect of potential changes in interest rates, credit spreads and interest rate volatility on these fair values as of such date is as follows:

Interest Rates				Credit Spreads				Interest Rate Volatility
Factor change	Change in fair value   (in millions)			Factor change	Change in fair value   (in millions)			Factor change	Change in fair value   (in millions)
+50 bps		$(1,069	)	+50 bps		$(1,054	)	+50 %		$(248	)
-50 bps		1,140		-50 bps		1,122		-50 %		33

The fair values of our held-to-maturity fixed-maturity securities valued by our DCF pricing model totaled $27.2 billion at June 30, 2011. The estimated effect of potential changes in interest rates, credit spreads and interest rate volatility on these fair values as of such date is as follows:

Interest Rates				Credit Spreads				Interest Rate Volatility
Factor change	Change in fair value   (in millions)			Factor change	Change in fair value   (in millions)			Factor change	Change in fair value   (in millions)
+50 bps		$ (1,696	)	+50 bps		$(1,557	)	+50 %		$(385	)
-50 bps		1,747		-50 bps		1,572		-50 %		357

For additional information on our investments and financial instruments, see the accompanying Notes 1, 3 and 4 and Notes 1, 3 and 4 of the Notes to the Consolidated Financial Statements in our annual report to shareholders for the year ended December 31, 2010.

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6.  NOTES PAYABLE

A summary of notes payable follows:

(In millions)	June 30, 2011			December 31, 2010
8.50% senior notes due May 2019	$	850		$	850
6.45% senior notes due August 2040		448	(1)		448	(1)
6.90% senior notes due December 2039		396	(2)		396	(2)
3.45% senior notes due August 2015		300			300
Yen-denominated Uridashi notes:
1.52% notes due September 2011 (principal amount 15 billion yen)		186			184
2.26% notes due September 2016 (principal amount 8 billion yen)		99			98
Variable interest rate notes due September 2011 (.58% at June 2011, principal amount 20 billion yen)		248			245
Yen-denominated Samurai notes:
1.87% notes due June 2012 (principal amount 26.6 billion yen)		329			327
Yen-denominated loans:
3.60% loan due July 2015 (principal amount 10 billion yen)		124			123
3.00% loan due August 2015 (principal amount 5 billion yen)		62			61
Capitalized lease obligations payable through 2016		6			6
Total notes payable	$	3,048		$	3,038

⁽¹⁾ $450 issuance net of a $2 underwriting discount that is being amortized over the life of the notes

⁽²⁾ $400 issuance net of a $4 underwriting discount that is being amortized over the life of the notes

In July 2011, we issued three series of Samurai notes totaling 50.0 billion yen through a public debt offering. The first series, which totaled 28.7 billion yen (approximately $356 million using the June 30, 2011, exchange rate), bears interest at a fixed rate of 1.47% per annum, payable semi-annually, and has a three-year maturity. The second series, which totaled 15.8 billion yen (approximately $196 million using the June 30, 2011, exchange rate), bears interest at a fixed rate of 1.84% per annum, payable semi-annually, and has a five-year maturity. The third series, which totaled 5.5 billion yen (approximately $68 million using the June 30, 2011, exchange rate), bears interest at a variable rate of three-month yen LIBOR plus a spread, payable quarterly, and has a three-year maturity. We have entered into an interest rate swap related to the 5.5 billion yen variable interest rate notes to swap the variable interest rate to a fixed interest rate of 1.475% (see Note 4). These Samurai notes are not available to U.S. persons.

We have no restrictive financial covenants related to our notes payable. We were in compliance with all of the covenants of our notes payable at June 30, 2011. No events of default or defaults occurred during the six-month period ended June 30, 2011.

For additional information, see Notes 4 and 8 of the Notes to the Consolidated Financial Statements in our annual report to shareholders for the year ended December 31, 2010.

7.   SHAREHOLDERS’ EQUITY

The following table is a reconciliation of the number of shares of the Company’s common stock for the six-month periods ended June 30.

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(In thousands of shares)	2011			2010
Common stock - issued:
Balance, beginning of period		662,660			661,209
Exercise of stock options and issuance of restricted shares		752			672
Balance, end of period		663,412			661,881
Treasury stock:
Balance, beginning of period		192,999			192,641
Purchases of treasury stock:
Open market		4,100			0
Other		155			95
Dispositions of treasury stock:
Shares issued to AFL Stock Plan		(745	)		0
Exercise of stock options		(85	)		(1,535	)
Other		(79	)		(89	)
Balance, end of period		196,345			191,112
Shares outstanding, end of period		467,067			470,769

Outstanding share-based awards are excluded from the calculation of weighted-average shares used in the computation of basic earnings per share. The following table presents the approximate number of share-based awards to purchase shares, on a weighted-average basis, that were considered to be anti-dilutive and were excluded from the calculation of diluted earnings per share for the following periods.

	Three Months Ended June 30,				Six Months Ended June 30,
(In thousands)	2011		2010		2011		2010
Anti-dilutive share-based awards		4,246		4,610		3,419		3,530

Share Repurchase Program: During the first six months of 2011, we repurchased 4.1 million shares of our common stock in the open market. During the first six months of 2010, we did not repurchase any shares of our common stock.

As of June 30, 2011, a remaining balance of 26.3 million shares of our common stock was available for purchase under a share repurchase authorization by our board of directors in 2008.

8.   SHARE-BASED COMPENSATION

The Company has two long-term incentive compensation plans. The first plan, which expired in February 2007, is a stock option plan which allowed grants for incentive stock options (ISOs) to employees and non-qualifying stock options (NQSOs) to employees and non-employee directors. Options granted before the plan’s expiration date remain outstanding in accordance with their terms. The second long-term incentive plan allows awards to Company employees for ISOs, NQSOs, restricted stock, restricted stock units, and stock appreciation rights. Non-employee directors are eligible for grants of NQSOs, restricted stock, and stock appreciation rights. As of June 30, 2011, approximately 15.2 million shares were available for future grants under this plan, and the only performance-based awards issued and outstanding were restricted stock awards.

Share-based awards granted to U.S.-based grantees are settled with authorized but unissued Company stock, while those issued to Japan-based grantees are settled with treasury shares.

The following table provides information on stock options outstanding and exercisable at June 30, 2011.

	Stock Option Shares (in thousands)	Weighted-Average   Remaining Term (in years)	Aggregate Intrinsic Value   (in millions)	Weighted-Average   Exercise Price Per Share
Outstanding	14,608	5.3	$97	$42.51
Exercisable	11,197	4.3	66	42.93

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We received cash from the exercise of stock options in the amount of $13.0 million during the first six months of 2011, compared with $46 million in the first six months of 2010. The tax benefit realized as a result of stock option exercises and restricted stock releases was $11.9 million in the first six months of 2011, compared with $20 million in the first six months of 2010.

As of June 30, 2011, total compensation cost not yet recognized in our financial statements related to restricted-share-based awards was $32.4 million, of which $16.4 million (688 thousand shares) was related to restricted-share-based awards with a performance-based vesting condition. We expect to recognize these amounts over a weighted-average period of approximately 1.5 years. There are no other contractual terms covering restricted stock awards once vested.

For additional information on our long-term share-based compensation plans and the types of share-based awards, see Note 11 of the Notes to the Consolidated Financial Statements included in our annual report to shareholders for the year ended December 31, 2010.

9.  BENEFIT PLANS

Our basic employee defined-benefit pension plans cover substantially all of our full-time employees in Japan and the United States. The components of retirement expense for the Japanese and U.S. pension plans were as follows:

	Three Months Ended June 30,								Six Months Ended June 30,
	2011				2010				2011				2010
(In millions)	Japan		U.S.		Japan		U.S.		Japan		U.S.		Japan		U.S.
Components of net periodic benefit cost:
Service cost	$	4	$	3	$	4	$	3	$	8	$	7	$	7	$	6
Interest cost		2		4		1		4		3		8		2		7
Expected return on plan assets		(1)		(3)		0		(3)		(2)		(7)		(1)		(6)
Amortization of net actuarial loss		1		2		0		1		2		3		1		2
Net periodic benefit cost	$	6	$	6	$	5	$	5	$	11	$	11	$	9	$	9

During the six months ended June 30, 2011, Aflac Japan contributed approximately $11 million (using the June 30, 2011, exchange rate) to the Japanese pension plan, and Aflac U.S. did not make a contribution to the U.S. pension plan.

For additional information regarding our Japanese and U.S. benefit plans, see Note 13 of the Notes to the Consolidated Financial Statements in our annual report to shareholders for the year ended December 31, 2010.

10.   COMMITMENTS AND CONTINGENT LIABILITIES

We are a defendant in various lawsuits considered to be in the normal course of business. Members of our senior legal and financial management teams review litigation on a quarterly and annual basis. The final results of any litigation cannot be predicted with certainty. Although some of this litigation is pending in states where large punitive damages, bearing little relation to the actual damages sustained by plaintiffs, have been awarded in recent years, we believe the outcome of pending litigation will not have a material adverse effect on our financial position, results of operations, or cash flows.

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

FORWARD-LOOKING INFORMATION

The Private Securities Litigation Reform Act of 1995 provides a “safe harbor” to encourage companies to provide prospective information, so long as those informational statements are identified as forward-looking and are accompanied by meaningful cautionary statements identifying important factors that could cause actual results to differ materially from those included in the forward-looking statements. We desire to take advantage of these provisions. This report contains cautionary statements identifying important factors that could cause actual results to differ materially from those projected herein, and in any other statements made by Company officials in communications with the financial community and contained in documents filed with the Securities and Exchange Commission (SEC). Forward-looking statements are not based on historical information and relate to future operations, strategies, financial results or other developments. Furthermore, forward-looking information is subject to numerous assumptions, risks and uncertainties. In particular, statements containing words such as “expect,” “anticipate,” “believe,” “goal,” “objective,” “may,” “should,” “estimate,” “intends,” “projects,” “will,” “assumes,” “potential,” “target” or similar words as well as specific projections of future results, generally qualify as forward-looking. Aflac undertakes no obligation to update such forward-looking statements.

We caution readers that the following factors, in addition to other factors mentioned from time to time, could cause actual results to differ materially from those contemplated by the forward-looking statements:

— difficult conditions in global capital markets and the economy

— governmental actions for the purpose of stabilizing the financial markets

— defaults and downgrades in certain securities in our investment portfolio

— impairment of financial institutions

— credit and other risks associated with Aflac’s investment in perpetual securities

— differing judgments applied to investment valuations

— subjective determinations of amount of impairments taken on our investments

— limited availability of acceptable yen-denominated investments

— concentration of our investments in any particular single-issuer or sector

— concentration of business in Japan

— ongoing changes in our industry

— exposure to significant financial and capital markets risk

— fluctuations in foreign currency exchange rates

— significant changes in investment yield rates

— deviations in actual experience from pricing and reserving assumptions

— subsidiaries’ ability to pay dividends to Aflac Incorporated

— changes in law or regulation by governmental authorities

— ability to attract and retain qualified sales associates and employees

— decreases in our financial strength or debt ratings

— ability to continue to develop and implement improvements in information technology systems

— changes in U.S. and/or Japanese accounting standards

— failure to comply with restrictions on patient privacy and information security

— level and outcome of litigation

— ability to effectively manage key executive succession

— impact of the recent earthquake and tsunami natural disaster and related events at the nuclear plant in Japan and their aftermath

— catastrophic events including, but not necessarily limited to, tornadoes, hurricanes, earthquakes, tsunamis, and damage incidental to such events

— failure of internal controls or corporate governance policies and procedures

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MD&A OVERVIEW

Management’s Discussion and Analysis of Financial Condition and Results of Operations (MD&A) is intended to inform the reader about matters affecting the financial condition and results of operations of Aflac Incorporated and its subsidiaries for the three-month and six-month periods ended June 30, 2011 and 2010. Results of operations for interim periods are not necessarily indicative of results for the entire year. As a result, the following discussion should be read in conjunction with the consolidated financial statements and notes that are included in our annual report to shareholders for the year ended December 31, 2010. This MD&A is divided into the following sections:

— Our Business

— Performance Highlights

— Critical Accounting Estimates

— Results of Operations, consolidated and by segment

— Analysis of Financial Condition, including discussion of market risks of financial instruments

— Capital Resources and Liquidity, including discussion of availability of capital and the sources and uses of cash

OUR BUSINESS

Aflac Incorporated (the Parent Company) and its subsidiaries (collectively, the Company) primarily sell supplemental health and life insurance in the United States and Japan. The Company’s insurance business is marketed and administered through American Family Life Assurance Company of Columbus (Aflac), which operates in the United States (Aflac U.S.) and as a branch in Japan (Aflac Japan). Most of Aflac’s policies are individually underwritten and marketed through independent agents. Aflac U.S. markets and administers group products through Continental American Insurance Company (CAIC). Our insurance operations in the United States and our branch in Japan service the two markets for our insurance business.

PERFORMANCE HIGHLIGHTS

Results for the second quarter of 2011 benefited from the stronger yen/dollar exchange rate. However, realized investment losses were higher, compared with the same period a year ago. Total revenues rose 2.2% to $5.1 billion, compared with $5.0 billion in the second quarter of 2010. Net earnings were $280 million, or $.60 per diluted share, compared with $581 million, or $1.23 per diluted share, in the second quarter of 2010.

Results for the first six months of 2011 also benefited from the stronger yen. Total revenues rose 1.6% to $10.2 billion, compared with $10.0 billion in the first half of 2010. Net earnings were $674 million, or $1.43 per diluted share, compared with $1.2 billion, or $2.58 per diluted share, for the first six months of 2010.

Results in the second quarter of 2011 included pretax net realized investment losses of $668 million ($453 million after-tax), compared with losses of $89 million ($58 million after-tax) in the second quarter of 2010. A valuation allowance of $19 million was recorded in the second quarter of 2011 related to the deferred tax assets associated with our realized investment losses and is reflected in the tax-effected total net realized investment losses stated above. The investment losses in 2011 included $528 million ($343 million after-tax) of other-than-temporary impairments and $182 million of losses, net of gains, ($118 million after-tax) from securities sold, primarily as a result of an implemented plan to reduce the risk exposure in our investment portfolio coupled with the continued decline in the creditworthiness of issuers of certain investments.

Results for the first six months of 2011 included pretax net realized investment losses of $1.2 billion ($829 million after-tax), compared with losses of $135 million ($88 million after-tax) in the first six months of 2010. The valuation allowance of $19 million that was recorded in the second quarter of 2011 related to the deferred tax assets associated with our realized investment losses is reflected in the tax-effected total net realized investment losses stated above. The investment losses in 2011 included $933 million ($606 million after-tax) of other-than-temporary impairments and $326 million of losses, net of gains, ($212 million after-tax) from securities sold, primarily as a result of an implemented plan to reduce the risk exposure in our investment portfolio coupled with the continued decline in the creditworthiness of issuers of certain investments.

Shareholders’ equity at June 30, 2011 included a net unrealized gain on investment securities (including derivatives) of $758 million, compared with a net unrealized gain of $64 million at December 31, 2010.

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CRITICAL ACCOUNTING ESTIMATES

We prepare our financial statements in accordance with U.S. generally accepted accounting principles (GAAP). These principles are established primarily by the Financial Accounting Standards Board (FASB). In this MD&A, references to GAAP issued by the FASB are derived from the FASB Accounting Standards Codification^TM (ASC). The preparation of financial statements in conformity with GAAP requires us to make estimates based on currently available information when recording transactions resulting from business operations. The estimates that we deem to be most critical to an understanding of Aflac’s results of operations and financial condition are those related to the valuation of investments and derivatives, deferred policy acquisition costs, liabilities for future policy benefits and unpaid policy claims, and income taxes. The preparation and evaluation of these critical accounting estimates involve the use of various assumptions developed from management’s analyses and judgments. The application of these critical accounting estimates determines the values at which 96% of our assets and 85% of our liabilities are reported as of June 30, 2011, and thus has a direct effect on net earnings and shareholders’ equity. Subsequent experience or use of other assumptions could produce significantly different results.

There have been no changes in the items that we have identified as critical accounting estimates during the six months ended June 30, 2011. For additional information, see the Critical Accounting Estimates section of MD&A included in our annual report to shareholders for the year ended December 31, 2010.

New Accounting Pronouncements

For information on new accounting pronouncements and the impact, if any, on our financial position or results of operations, see Note 1 of the Notes to the Consolidated Financial Statements.

RESULTS OF OPERATIONS

The following table is a presentation of items impacting net earnings and net earnings per diluted share.

Items Impacting Net Earnings
	Three Months Ended June 30,												Six Months Ended June 30,
	2011			2010			2011			2010			2011			2010			2011			2010
	In Millions						Per Diluted Share						In Millions						Per Diluted Share
Net earnings	$	280		$	581		$	.60		$	1.23		$	674		$	1,217		$	1.43		$	2.58
Items impacting net earnings, net of tax:
Realized investment gains (losses):
Securities transactions and impairments		(480	)		8			(1.02	)		.02			(838	)		(33	)		(1.78	)		(.06	)
Impact of derivative and hedging activities		27			(66	)		.06			(.14	)		8			(55	)		.02			(.12	)

Realized Investment Gains and Losses

Our investment strategy is to invest in fixed-income securities to provide a reliable stream of investment income, which is one of the drivers of the Company’s profitability. This investment strategy aligns our assets with our liability structure, which our assets support. We do not purchase securities with the intent of generating capital gains or losses. However, investment gains and losses may be realized as a result of changes in the financial markets and the creditworthiness of specific issuers, tax planning strategies, and/or general portfolio maintenance and rebalancing. The realization of investment gains and losses is independent of the underwriting and administration of our insurance products, which are the principal drivers of our profitability.

Securities Transactions and Impairments

During the three- and six-month periods ended June 30, 2011, we realized investment losses as a result of the recognition of other-than-temporary impairments on certain securities, and we realized investment losses, net of gains, from the sale of securities as a result of an implemented plan to reduce the risk exposure in our investment portfolio. We recorded a valuation allowance of $19 million in the second quarter of 2011 on the deferred tax asset for our realized

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investment losses, which is reflected in the tax-effected realized investment losses for securities transactions and impairments shown in the table above. During the three-month period ended June 30, 2010, we realized pretax investment losses, net of gains, from the sale or redemption of securities in the normal course of business. For the six-month period ended June 30, 2010, we realized investment losses as a result of the recognition of other-than-temporary impairments on certain securities, and we realized pretax investment losses, net of gains, from the sale or redemption of securities in the normal course of business. See Note 3 of the Notes to Consolidated Financial Statements for a more detailed discussion of these investment activities.

The following table details our pretax impairment losses by investment category.

	Three Months Ended June 30,				Six Months Ended June 30,
(In millions)	2011		2010		2011		2010
Perpetual securities	$	184	$	0	$	184	$	41
Corporate bonds		343		0		740		0
Mortgage- and asset-backed securities		1		0		7		0
Municipalities		0		0		1		0
Equity securities		0		0		1		1
Total other-than-temporary impairment losses realized	$	528	$	0	$	933	$	42

Impact of Derivative and Hedging Activities

Our derivative activities, which are primarily passive in nature, include foreign currency, interest rate and credit default swaps in variable interest entities that are consolidated, and securities with embedded derivatives.

For a description of other items that could be included in the Impact of Derivative and Hedging Activities, see the Hedging Activities subsection of MD&A and Note 4 of the accompanying Notes to the Consolidated Financial Statements.

For additional information regarding realized investment gains and losses, see Notes 3 and 4 of the Notes to the Consolidated Financial Statements.

Foreign Currency Translation

Aflac Japan’s premiums and most of its investment income are received in yen. Claims and expenses are paid in yen, and we primarily purchase yen-denominated assets to support yen-denominated policy liabilities. These and other yen-denominated financial statement items are translated into dollars for financial reporting purposes. We translate Aflac Japan’s yen-denominated income statement into dollars using an average exchange rate for the reporting period, and we translate its yen-denominated balance sheet using the exchange rate at the end of the period. However, it is important to distinguish between translating and converting foreign currency. Except for a limited number of transactions, we do not actually convert yen into dollars.

Due to the size of Aflac Japan, where our functional currency is the Japanese yen, fluctuations in the yen/dollar exchange rate can have a significant effect on our reported results. In periods when the yen weakens, translating yen into dollars results in fewer dollars being reported. When the yen strengthens, translating yen into dollars results in more dollars being reported. Consequently, yen weakening has the effect of suppressing current period results in relation to the comparable prior period, while yen strengthening has the effect of magnifying current period results in relation to the comparable prior period. As a result, we view foreign currency translation as a financial reporting issue for Aflac and not an economic event to our Company or shareholders. Because changes in exchange rates distort the growth rates of our operations, management evaluates Aflac’s financial performance excluding the impact of foreign currency translation.

Income Taxes

Our combined U.S. and Japanese effective income tax rate on pretax earnings was 38.3% for the three-month period ended June 30, 2011, compared with 34.6% for the same period in 2010. The increase in the effective income tax rate was due primarily to a $19 million valuation allowance recognized in the second quarter of 2011 related to the deferred tax assets associated with our realized investment losses discussed above. The effect of this valuation allowance was reflected in our combined U.S. and Japanese effective income tax rate on pretax earnings for the six-month period ended June 30, 2011 of 36.0%, compared with 34.7% for the same period in 2010.

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Earnings Guidance

We communicate earnings guidance in this report based on the growth in net earnings per diluted share. However, certain items that cannot be predicted or that are outside of management’s control may have a significant impact on actual results. Therefore, our comparison of net earnings includes certain assumptions to reflect the limitations that are inherent in projections of net earnings. In comparing period-over-period results, we exclude the effect of realized investment gains and losses (securities transactions, impairments, and the impact of derivative and hedging activities) and nonrecurring items. We also assume no impact from foreign currency translation on the Aflac Japan segment and the Parent Company’s yen-denominated interest expense for a given period in relation to the prior period.

Subject to the preceding assumptions, our objective for 2011 is to increase net earnings per diluted share by 8% over 2010. If the yen/dollar exchange rate averages 80 to 85 for the full year, we would expect reported net earnings to be in the range of $6.09 to $6.34 per diluted share. Using that same exchange rate assumption, we would expect third quarter 2011 reported net earnings per diluted share to be in the range of $1.54 to $1.60. Based on our stated objective for 2011, the following table shows the likely results for 2011 net earnings per diluted share, including the impact of foreign currency translation using various yen/dollar exchange rate scenarios.

2011 Net Earnings Per Share (EPS) Scenarios(1)
Weighted-Average Yen/Dollar Exchange Rate	Net Earnings Per Diluted Share	% Growth Over 2010	Yen Impact on EPS
80.00	$ 6.34	14.6 %	$  .37
85.00	6.09	10.1	.12
87.69 (2)	5.97	8.0	0
90.00	5.87	6.1	(.10)
95.00	5.68	2.7	(.29)

⁽¹⁾  Excludes realized investment gains/losses (securities transactions, impairments, and the impact of derivative and hedging activities) and nonrecurring items in 2011 and 2010

⁽²⁾  Actual 2010 weighted-average exchange rate

Our objective for 2012 is to increase net earnings per diluted share by 2% to 5% over 2011, excluding the effect of realized investment gains and losses (securities transactions, impairments, and the impact of derivative and hedging activities), nonrecurring items, and foreign currency translation. This earnings objective assumes no additional significant investment losses and no further material decline in interest rates. Once the effects of our investment derisking program and low interest rate yields on investments have been fully integrated into our financial results, we believe the rate of earnings growth in future years should improve.

INSURANCE OPERATIONS

Aflac’s insurance business consists of two segments: Aflac Japan and Aflac U.S. Aflac Japan, which operates as a branch of Aflac, is the principal contributor to consolidated earnings. GAAP financial reporting requires that a company report financial and descriptive information about operating segments in its annual and interim period financial statements. Furthermore, we are required to report a measure of segment profit or loss, certain revenue and expense items, and segment assets.

We measure and evaluate our insurance segments’ financial performance using operating earnings on a pretax basis. We define segment operating earnings as the profits we derive from our operations before realized investment gains and losses (securities transactions, impairments, and the impact of derivative and hedging activities) and nonrecurring items. We believe that an analysis of segment pretax operating earnings is vitally important to an understanding of the underlying profitability drivers and trends of our insurance business. Furthermore, because a significant portion of our business is conducted in Japan, we believe it is equally important to understand the impact of translating Japanese yen into U.S. dollars.

We evaluate our sales efforts using new annualized premium sales, an industry operating measure. New annualized premium sales, which include both new sales and the incremental increase in premiums due to conversions, represent the premiums that we would collect over a 12-month period, assuming the policies remain in force. For Aflac Japan, new annualized premium sales are determined by applications submitted during the reporting period. For Aflac U.S., new annualized premium sales are determined by applications that are issued during the reporting period. Premium income, or

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earned premiums, is a financial performance measure that reflects collected or due premiums that have been earned ratably on policies in force during the reporting period.

AFLAC JAPAN SEGMENT

Aflac Japan Pretax Operating Earnings

Changes in Aflac Japan’s pretax operating earnings and profit margins are primarily affected by morbidity, mortality, expenses, persistency and investment yields. The following table presents a summary of operating results for Aflac Japan.

Aflac Japan Summary of Operating Results
	Three Months Ended June 30,				Six Months Ended June 30,
(In millions)	2011		2010		2011		2010
Premium income		$3,770		$3,186		$7,472		$6,393
Net investment income:
Yen-denominated investment income		434		392		866		793
Dollar-denominated investment income		202		201		419		393
Net investment income		636		593		1,285		1,186
Other income (loss)		5		(1)		25		26
Total operating revenues		4,411		3,778		8,782		7,605
Benefits and claims		2,633		2,229		5,213		4,505
Operating expenses:
Amortization of deferred policy acquisition costs		167		139		329		282
Insurance commissions		290		263		578		535
Insurance and other expenses		390		349		751		664
Total operating expenses		847		751		1,658		1,481
Total benefits and expenses		3,480		2,980		6,871		5,986
Pretax operating earnings(1)		$   931		$   798		$1,911		$1,619
Weighted-average yen/dollar exchange rate		81.54		92.05		81.93		91.26

	In Dollars												In Yen
Percentage change over previous period:	Three Months Ended June 30,						Six Months Ended June 30,						Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010			2011			2010			2011			2010
Premium income		18.3	%		9.8	%		16.9	%		8.1	%		5.1	%		3.8	%		5.0	%		3.5	%
Net investment income		7.3			9.0			8.4			7.4			(5.0	)		3.0			(2.8	)		2.7
Total operating revenues		16.8			9.2			15.5			8.0			3.7			3.2			3.7			3.4
Pretax operating earnings(1)		16.7			17.4			18.0			19.0			3.4			10.8			6.0			13.7

⁽¹⁾  See the Insurance Operations section of this MD&A for our definition of segment operating earnings.

The percentage increases in premium income reflect the growth of premiums in force. The increases in annualized premiums in force in yen of 5.2% in the first six months of 2011 and 3.9% for the same period of 2010 reflect the high persistency of Aflac Japan’s business and the sales of new policies. Annualized premiums in force at June 30, 2011, were 1.29 trillion yen, compared with 1.22 trillion yen a year ago. Annualized premiums in force, translated into dollars at respective period-end exchange rates, were $15.9 billion at June 30, 2011, compared with $13.8 billion a year ago.

Aflac Japan maintains a portfolio of dollar-denominated and reverse-dual currency securities (yen-denominated debt securities with dollar coupon payments). Dollar-denominated investment income from these assets accounted for approximately 33% of Aflac Japan’s investment income in the first six months of 2011 and 2010. In periods when the yen strengthens in relation to the dollar, translating Aflac Japan’s dollar-denominated investment income into yen lowers growth rates for net investment income, total operating revenues, and pretax operating earnings in yen terms. In periods when the yen weakens, translating dollar-denominated investment income into yen magnifies growth rates for net investment income, total operating revenues, and pretax operating earnings in yen terms. On a constant currency basis, dollar-denominated investment income accounted for approximately 35% of Aflac Japan’s investment income during the first six months of 2011, compared with 34% a year ago. The following table illustrates the effect of translating Aflac Japan’s

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dollar-denominated investment income and related items into yen by comparing certain segment results with those that would have been reported had yen/dollar exchange rates remained unchanged from the comparable period in the prior year.

Aflac Japan Percentage Changes Over Previous Period

(Yen Operating Results)

For the Periods Ended June 30,

	Including Foreign Currency Changes												Excluding Foreign Currency Changes(2)
	Three Months						Six Months						Three Months						Six Months
	2011			2010			2011			2010			2011			2010			2011			2010
Net investment income		(5.0	)  %		3.0	%		(2.8	)  %		2.7	%		(.9	)  %		5.1	%		.9	%		4.3	%
Total operating revenues		3.7			3.2			3.7			3.4			4.5			4.0			4.3			3.7
Pretax operating earnings(1)		3.4			10.8			6.0			13.7			6.9			14.7			8.4			15.2

⁽¹⁾  See the Insurance Operations section of this MD&A for our definition of segment operating earnings.

⁽²⁾  Amounts excluding foreign currency changes on dollar-denominated items were determined using the same yen/dollar exchange rate for the current period as the comparable period in the prior year.

The following table presents a summary of operating ratios for Aflac Japan.

	Three Months Ended June 30,				Six Months Ended June 30,
Ratios to total revenues:	2011		2010		2011		2010
Benefits and claims		59.7  %		59.0  %		59.4  %		59.2  %
Operating expenses:
Amortization of deferred policy acquisition costs		3.8		3.7		3.7		3.7
Insurance commissions		6.6		7.0		6.6		7.0
Insurance and other expenses		8.8		9.2		8.6		8.8
Total operating expenses		19.2		19.9		18.9		19.5
Pretax operating earnings(1)		21.1		21.1		21.7		21.3

⁽¹⁾  See the Insurance Operations section of this MD&A for our definition of segment operating earnings.

Aflac Japan’s financial results for the first quarter of 2011 reflected a provision of 3.0 billion yen, or $37 million, for claims related to the earthquake and tsunami that occurred in Japan on March 11, 2011. These claims were offset by reserve releases and reinsurance of 2.0 billion yen, or $25 million, resulting in a net income statement impact of 1.0 billion yen, or $12 million, for benefits expense in the first quarter of 2011. The financial results for the first quarter of 2011 also reflected .7 billion yen, or $8 million, of operating expenses resulting from the earthquake and tsunami. Based on our claims experience to date and our claims estimates, we believe that our initial provision is adequate. The natural disaster and its related events have not had a material impact on our financial position or results of operations.

In the past several years, the benefit ratio has declined, driven primarily by favorable claim trends in our cancer product line. We expect this downward claim trend to continue. Our operating ratios have also been impacted by strong sales results in our ordinary products including child endowment and WAYS. These products have higher benefit ratios and lower expense ratios than our third sector products. The benefit ratio has also been impacted by the effect of low investment yields, which impacts our profit margin by reducing the spread between investment yields and required interest on policy reserves. Additionally, in the second quarter of 2011, net investment income was impacted by the write-off of the accrued interest income on our investments in Dexia S.A. and Irish Life and Permanent PLC, totaling $32 million, which caused the ratio of benefits to total revenue to be higher than it otherwise would have been due to the lower total revenue. Although the benefit ratio increased, the operating expense ratio decreased, resulting in the pretax operating profit margin remaining consistent in the three-month period ended June 30, 2011 compared with the level in prior year, and expanding in the six-month period ended June 30, 2011, compared with the same period a year ago. We expect the benefit and expense ratios and pretax profit margin to remain relatively stable throughout 2011.

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Aflac Japan Sales

In 2011, Aflac Japan has generated its largest first- and second-quarter production in its 36-year history. New annualized premium sales exceeded our expectations in the second quarter of 2011 and rose to 36.1 billion yen, a 6.6% increase compared with the same period in prior year. The following table presents Aflac Japan’s new annualized premium sales for the periods ended June 30.

	In Dollars												In Yen
	Three Months						Six Months						Three Months						Six Months
(In millions of dollars and billions of yen)	2011			2010			2011			2010			2011			2010			2011			2010
New annualized premium sales	$	442		$	368		$	856		$	702			36.1			33.9			70.2			64.1
Increase (decrease) over comparable period in prior year		20.1	%		19.1	%		22.0	%		16.7	%		6.6	%		12.6	%		9.4	%		11.4	%

The following table details the contributions to new annualized premium sales by major insurance product for the periods ended June 30.

	Three Months						Six Months
	2011			2010			2011			2010
Medical		25	%		35	%		26	%		37	%
Cancer		24			23			21			23
Ordinary life:
Child endowment		17			19			20			17
WAYS		19			7			18			7
Other ordinary life		11			12			11			13
Other		4			4			4			3
Total		100	%		100	%		100	%		100	%

The medical insurance product was the leading contributor to total sales for the second quarter of 2011. Medical insurance sales decreased 26.2% during the three-month period ended June 30, 2011, compared with the same period a year ago, reflecting a difficult comparison to prior year sales, which had benefited from the favorable consumer response to our revised EVER medical product. Despite the comparative sales decrease, we maintained our position as the number one seller of medical insurance policies in Japan. With continued cost pressure on Japan’s health care system, we expect the need for medical products will continue to rise in the future, and we remain encouraged about the outlook for the medical insurance market.

Cancer insurance sales were up 12.4% during the second quarter of 2011, compared with the same period a year ago. The increase primarily reflected the introduction of the new base cancer policy, DAYS, which was introduced at the end of March. The enhancements to this new base policy are a response to the changes in cancer treatment as well as our commitment to being the number one provider of cancer insurance in Japan. Sales of cancer insurance accounted for 24.4% of new annualized premium sales for the quarter. We are convinced that the affordable cancer products Aflac Japan provides will continue to be an important part of our product portfolio.

The bank channel generated new annualized premium sales of 7.6 billion yen in the second quarter of 2011, an increase of 95.6% over the second quarter of 2010. As the bank channel has become a larger contributor to sales, Aflac Japan has enhanced its product portfolio to better meet the needs of banks. These products include our child endowment product and WAYS, a product that we first introduced in 2006 and introduced to the bank channel in 2009. Sales of WAYS were 6.7 billion yen during the second quarter of 2011, an increase of 190.7%, compared with the same period a year ago. Our profit margin on WAYS is significantly enhanced when policyholders elect to pay premiums upfront using the “discounted advance premium” option. Approximately 90% of customers at banks choose this payment option. As the banking channel becomes a greater contributor to our sales growth, we expect sales of this product to grow significantly in 2011.

Sales of our child endowment product were 6.2 billion yen during the second quarter of 2011, a decrease of 1.4% compared with the same period a year ago. We are shifting our focus from selling child endowment toward selling WAYS and our new cancer product DAYS. In addition, having sold the child endowment product for two years, we have already made a first attempt at selling this product to the eligible target market of families with young children. Remaining growth will primarily come from newborns, however the Japan birth rate is low. Finally, the government child subsidy that initially

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helped fuel demand for this product is being re-evaluated for possible reduction or elimination. As a result, we expect child endowment sales to decline significantly for the remainder of the year.

In the second quarter of 2011, the bank channel generated 21.1% of new annualized premium sales for Aflac Japan, compared with 11.5% during the same period a year ago. At June 30, 2011, we had agreements to sell our products with 367 banks, or more than 90% of the total number of banks in Japan. While many banks have agreed to sell our products, it takes time to facilitate training of employees at more than 20,000 branches representing the 367 banks. We are seeing sales steadily improving at many of these bank branches as training takes place and as many banks expand their offerings of Aflac products. We believe we have significantly more banks selling our third sector insurance products than any other insurer operating in Japan. We believe our long-standing and strong relationships within the Japanese banking sector, along with our strategic preparations, have proven to be an advantage as this channel opened up for our types of products.

We also remain committed to selling through our traditional channels, which allows us to reach consumers through affiliated corporate agencies, independent corporate agencies and individual agencies. In the second quarter of 2011, we recruited more than 1,500 new sales agencies, an increase of 16.1% over the same period a year ago. At June 30, 2011, Aflac Japan was represented by approximately 20,000 sales agencies and more than 117,700 licensed sales associates employed by those agencies.

Overall, Aflac Japan performed well in the second quarter of 2011. We believe that there is still a continued need for our products in Japan. Following strong sales growth in 2010, our objective for 2011 was for new annualized premium sales to be in the range of down 2% to up 3% in Japan. However, with the better-than-expected sales results in the first six months of 2011, we have upwardly revised Aflac Japan’s annual sales target to achieving a flat to 5% sales increase in 2011.

Aflac Japan Investments

Growth of investment income in yen is affected by available cash flow from operations, the timing of investing the cash flow, yields on new investments, and the effect of yen/dollar exchange rates on dollar-denominated investment income. Aflac Japan has invested in privately issued securities to secure higher yields than those available on Japanese government or other public corporate bonds, while still adhering to prudent standards for credit quality. All of our privately issued securities are rated investment grade at the time of purchase. These securities are generally issued with documentation consistent with standard medium-term note programs. In addition, many of these investments have protective covenants appropriate to the specific issuer, industry and country. These covenants often require the issuer to adhere to specific financial ratios and give priority to repayment of our investment under certain circumstances.

The following table presents the results of Aflac Japan’s investment yields for the periods ended June 30.

	Three Months						Six Months
	2011			2010			2011			2010
New money yield - yen only		2.16	%		2.55	%		2.24	%		2.51	%
New money yield - blended		2.67			2.77			2.88			2.72
Return on average invested assets, net of investment expenses		3.15			3.55			3.23			3.55

The decrease in the Aflac Japan yen only new money yield reflects the low level of interest rates and tightening credit spreads. At June 30, 2011, the yield on Aflac Japan’s investment portfolio, including dollar-denominated investments, was 3.51%, compared with 3.71% a year ago. In order to address our challenge of investing in Japan’s low-interest-rate environment, in 2010 and continuing into the first six months of 2011, we started increasing the amount Aflac Japan invests in higher-yielding dollar-denominated securities. See Notes 3 and 5 of the Notes to the Consolidated Financial Statements and the Analysis of Financial Condition section of this MD&A for additional information on our investments.

Japanese Economy

Japan’s economy had experienced downward pressure due to the effects of the earthquake and tsunami that occurred on March 11, 2011, however The Bank of Japan’s July 2011 Monthly Report of Recent Economic and Financial Developments stated that Japan’s economic activity is improving. After declining sharply following the earthquake, production has recently shown signs of increased activity with the easing of supply-side constraints and an increase in exports. Domestic private demand has also begun to increase, with some improvement in household and business sentiment. Financial conditions have generally continued to ease, while weakness has been observed in the financial positions of some firms, mainly small ones.

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Prior to the earthquake and tsunami, Japan’s economic conditions had been showing signs of improvement. Japan’s economy is still expected to return to a moderate recovery path, following the effects of the natural disaster earlier this year. For additional information, see the Japanese Economy subsection of MD&A in our annual report to shareholders for the year ended December 31, 2010.

Japanese Regulatory Environment

Japan’s Financial Services Agency (FSA) maintains a solvency standard, which is used by Japanese regulators to monitor the financial strength of insurance companies. The FSA will apply a revised method of calculating the solvency margin ratio for life insurance companies as of the fiscal year-end 2011 (March 31, 2012) and has encouraged the disclosure of the ratio as reference information as of fiscal year-end 2010 (March 31, 2011). The FSA had commented that the revision would generally reduce life insurance companies’ solvency margin ratios to approximately half the level of those reported under the current calculation method. As of March 31, 2011, Aflac Japan’s solvency margin ratio calculated using the current method was 919.3%, and the solvency margin ratio under the new standards, disclosed as reference information, was 512.2%. As expected, based on the results of the calculation of the solvency margin ratio under the new standards, Aflac Japan’s relative position within the industry did not materially change.

In 2005, legislation aimed at privatizing Japan’s postal system (Japan Post) was enacted into law. The privatization laws split Japan Post into four entities that began operating in October 2007. In 2007, one of these entities selected Aflac Japan as its provider of cancer insurance to be sold through post offices, and, in 2008, we began selling cancer insurance through these post offices. Japan Post has historically been a popular place for consumers to purchase insurance products. Currently, our products are being offered in approximately 1,000 post offices.

Japan Post reform legislation was introduced in the 2010 Japanese ordinary Diet session, but the session ended before the legislation could be passed. The legislation again failed to pass in the 2010 fall Diet session and is scheduled to be taken up in the 2011 ordinary Diet session, which opened on January 24, 2011. Given that the ruling coalition no longer controls a majority in the Diet’s upper house following its defeat in the July 2010 election, it is unclear whether the postal reform legislation will be passed in the 2011 ordinary Diet session. Regardless, we believe that the Diet debate on postal reform is unlikely to change Aflac Japan’s relationship with the post office company.

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AFLAC U.S. SEGMENT

Aflac U.S. Pretax Operating Earnings

Changes in Aflac U.S. pretax operating earnings and profit margins are primarily affected by morbidity, mortality, expenses, persistency and investment yields. The following table presents a summary of operating results for Aflac U.S.

Aflac U.S. Summary of Operating Results

	Three Months Ended June 30,						Six Months Ended June 30,
(In millions)	2011			2010			2011			2010
Premium income	$	1,186		$	1,147		$	2,356		$	2,289
Net investment income		148			135			291			267
Other income		3			3			6			5
Total operating revenues		1,337			1,285			2,653			2,561
Benefits and claims		676			655			1,319			1,235
Operating expenses:
Amortization of deferred policy acquisition costs		97			90			213			228
Insurance commissions		138			134			271			266
Insurance and other expenses		180			179			351			361
Total operating expenses		415			403			835			855
Total benefits and expenses		1,091			1,058			2,154			2,090
Pretax operating earnings(1)	$	246		$	227		$	499		$	471
Percentage change over previous period:
Premium income		3.4	%		4.9	%		2.9	%		4.2	%
Net investment income		9.7			6.1			9.2			5.9
Total operating revenues		4.0			5.1			3.6			4.4
Pretax operating earnings(1)		8.3			15.0			5.9			17.3

⁽¹⁾  See the Insurance Operations section of this MD&A for our definition of segment operating earnings.

Annualized premiums in force increased 3.1% in the first six months of 2011 and 2010. Annualized premiums in force at June 30, 2011, were $5.0 billion, compared with $4.9 billion a year ago.

The following table presents a summary of operating ratios for Aflac U.S.

	Three Months Ended June 30,				Six Months Ended June 30,
Ratios to total revenues:	2011		2010		2011		2010
Benefits and claims		50.6  %		51.0  %		49.7  %		48.2  %
Operating expenses:
Amortization of deferred policy acquisition costs		7.2		7.0		8.0		8.9
Insurance commissions		10.3		10.4		10.2		10.4
Insurance and other expenses		13.5		13.9		13.3		14.1
Total operating expenses		31.0		31.3		31.5		33.4
Pretax operating earnings(1)		18.4		17.7		18.8		18.4

⁽¹⁾  See the Insurance Operations section of this MD&A for our definition of segment operating earnings.

In the second quarter of 2011, the pretax operating profit margin expanded, compared with the same period a year ago due to the improvement of the benefit and expense ratios. In the first quarter of 2010, we experienced the loss of a large payroll account which resulted in the release of the future policy benefit reserves and amortization of the deferred policy acquisition costs for policies associated with this account; the net result had a positive impact on the profit margin in the first six months of 2010. In the first six months of 2011, as expected, our benefit ratio increased, compared with the same period of 2010, however it is still somewhat below normal levels. We believe we have benefited from the overall low level of healthcare utilization that is currently being experienced in the United States. The expense ratio decreased in the first six months of 2011, resulting in a slightly improved pretax operating profit margin, compared with that experienced in

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2010. For the remainder of 2011, we expect the benefit ratio to increase somewhat as healthcare utilization returns to a more normal level. We also expect the expense ratio to be higher in the remainder of the year as we invest in marketing and other areas in preparation for 2012.

Aflac U.S. Sales

For the second consecutive quarter in 2011, Aflac U.S. generated positive sales growth. We believe this sales improvement reflects our intense focus on supporting our field force with enhanced products, including group products, and better resources and training that help our sales force approach selling in the current economic environment more effectively. The following table presents Aflac’s U.S. new annualized premium sales for the periods ended June 30.

	Three Months				Six Months
(In millions)	2011		2010		2011		2010
New annualized premium sales		$353		$333		$689		$649
Increase (decrease) over comparable period in prior year		5.9  %		(2.4)  %		6.1  %		(6.3)  %

The following table details the contributions to new annualized premium sales by major insurance product category for the periods ended June 30.

	Three Months				Six Months
	2011		2010		2011		2010
Income-loss protection:
Short-term disability		17  %		17  %		17  %		17  %
Life		6		6		6		6
Asset-loss protection:
Accident		31		32		31		31
Critical care(1)		23		22		23		22
Supplemental medical:
Hospital indemnity		16		17		16		18
Dental/vision		7		6		7		6
Total		100  %		100  %		100  %		100  %

⁽¹⁾  Includes cancer, critical illness, and hospital intensive care products

New annualized premium sales for accident insurance, our leading product category, increased 3%, short-term disability sales increased 3%, critical care insurance sales (including cancer insurance) increased 13%, and hospital indemnity insurance sales decreased 3% in the second quarter of 2011, compared with the same period a year ago.

We are pursuing sales through “Smart Launches,” which are product specific coordinated sales marketing efforts. Our first “Smart Launch” was in the first quarter of 2011, and it focused our sales force on selling our dental product. Continuing the success of that effort from the first quarter, the results were very positive with our dental category generating a 44.1% sales increase in the second quarter of 2011, compared with the same period a year ago. Our second “Smart Launch” promotes our new Critical Care and Recovery product, which was previously known as our Specified Health Event product. This “Smart Launch” began in the middle of the second quarter of 2011. Therefore, it is too early to quantify its full impact. However, we are encouraged with how our sales force has embraced both the product itself and the “Smart Launch.”

As part of our U.S. sales strategy, we continue to focus on growing and enhancing the effectiveness of our U.S. sales force. Field force recruiting continued to benefit from targeted national advertising campaigns that we began in January 2011. These campaigns contributed significantly to our 10.2% increase in recruits for the second quarter of 2011, compared with the same period a year ago. We recruited more than 6,400 new sales associates in the second quarter of 2011, resulting in approximately 72,700 licensed sales associates as of June 30, 2011.

In addition to expanding the size and capabilities of our traditional sales force, we are encouraged about the opportunities to broaden our distribution by pursuing and strengthening relationships with insurance brokers. Insurance brokers have been a historically underleveraged sales channel for Aflac, so we have been developing relationships that complement our traditional distribution system with the Aflac for Brokers^SM initiative that we launched in 2009. We have a management team experienced in broker sales, and we are supporting this initiative with streamlined products, targeted broker-specific advertising campaigns, customized enrollment technology, and competitive compensation.

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Our group products sold through CAIC, now branded as Aflac Group Insurance, have enhanced sales opportunities not only for brokers but also for our traditional sales force of individual associates, especially when they pursue larger payroll accounts. For the three-month period ended June 30, 2011, sales from Aflac Group Insurance increased to $35 million, or 9.8% of new annualized premium sales for Aflac U.S. For the six-month period ended June 30, 2011, sales from Aflac Group Insurance increased to $70 million, or 10.2% of new annualized premium sales for Aflac U.S.

Although we remain somewhat cautious in our short-term sales outlook for Aflac U.S., our longer-term view has not changed. We believe the need for our products we sell remains strong, and that the United States provides a vast and accessible market for our products. We are taking measures to better reach potential customers through our product and distribution strategy, which includes broadening our product portfolio to include group products in addition to our traditional individually issued products. The addition of the group product platform and our growing broker initiative only serve to enhance our ability to leverage the Aflac brand to reach more companies, large and small, across the United States. Following the passage of health care reform in 2010, we believe employers and consumers will increasingly come to understand the need for the products we offer, just as they have in Japan. We believe that our objective for Aflac U.S. new annualized premium sales growth for 2011 to be flat to up 5% is reasonable.

Aflac U.S. Investments

The following table presents the results of Aflac’s U.S. investment yields for the periods ended June 30.

	Three Months				Six Months
	2011		2010		2011		2010
New money yield		5.72  %		6.11  %		5.74  %		6.01  %
Return on average invested assets, net of investment expenses		6.41		6.24		6.42		6.36

The decrease in the U.S. new money yield reflects a low level of interest rates and tightening credit spreads. At June 30, 2011, the portfolio yield on Aflac’s U.S. portfolio was 6.76%, compared with 7.04% a year ago. See Notes 3 and 5 of the Notes to the Consolidated Financial Statements and the Analysis of Financial Condition section of this MD&A for additional information on our investments.

U.S. Economy

Operating in the U.S. economy continues to be challenging. Ongoing low confidence levels from consumers and small businesses coupled with fewer employees at the worksite continue to pose challenges to our U.S. sales growth. Most of our business continues to revolve around small business owners and accounts with fewer than 100 employees. Small businesses, in particular, have proven to be especially vulnerable to ongoing economic weakness, and both small-business owners and their workers are anxious about the future. Workers at small businesses are holding back on increasing their spending for voluntary insurance products. Although we believe that the weakened U.S. economy has been a contributing factor to slower sales growth, we also believe our products remain affordable to the average American consumer. We believe that consumers’ underlying need for our U.S. product line remains strong, and that the United States remains a sizeable and attractive market for our products.

U.S. Regulatory Environment

In March 2010, President Barack Obama signed the Patient Protection and Affordable Care Act (PPACA) to give Americans of all ages and income levels access to comprehensive major medical health insurance. The primary subject of the new legislation is major medical insurance, therefore, the PPACA, as enacted, does not directly affect the design of our insurance products or our sales model. Our experience with Japan’s national healthcare environment leads us to believe that the need for our products will only increase over the coming years.

In July 2010, President Obama signed the Dodd-Frank Wall Street Reform and Consumer Protection Act, commonly known as the Dodd-Frank Act, which, among other things, created a Financial Stability and Oversight Council. The Council may designate by a two-thirds vote whether certain insurance companies and insurance holding companies pose a grave threat to the financial stability of the United States, in which case such nonbank financial companies would become subject to prudential regulation by the Board of Governors of the U.S. Federal Reserve, including capital requirements, leverage limits, liquidity requirements and examinations. The Board may limit such company’s ability to enter into merger transactions, restrict its ability to offer financial products, require it to terminate one or more activities, or impose conditions on the manner in which it conducts activities. The Dodd-Frank Act also established a Federal Insurance Office under the U.S. Treasury Department to monitor all aspects of the insurance industry and of lines of business other than certain health insurance, certain long-term care insurance and crop insurance. Traditionally, U.S. insurance companies have been regulated primarily by state insurance departments. The Dodd-Frank Act requires extensive rule-making and other

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future regulatory action, which in some cases will take a period of years to implement. Despite the lack of regulations to implement this law, we believe that Aflac would not likely be considered a company that would pose a systemic risk to the financial stability of the United States. However, at the current time, it is not possible to predict with any degree of certainty what impact, if any, the Dodd-Frank Act will have on our U.S. business, financial condition, or results of operations.

ANALYSIS OF FINANCIAL CONDITION

Our financial condition has remained strong in the functional currencies of our operations. The yen/dollar exchange rate at the end of each period is used to translate yen-denominated balance sheet items to U.S. dollars for reporting purposes.

The following table demonstrates the effect of the change in the yen/dollar exchange rate by comparing select balance sheet items as reported at June 30, 2011, with the amounts that would have been reported had the exchange rate remained unchanged from December 31, 2010.

Impact of Foreign Exchange on Balance Sheet Items
(In millions)	As   Reported		Exchange                  Effect		Net of         Exchange Effect
Yen/dollar exchange rate(1)		80.73				81.49
Investments and cash		$              92,984		$            675	$	92,309
Deferred policy acquisition costs		10,028		67		9,961
Total assets		106,232		758		105,474
Policy liabilities		86,366		733		85,633
Total liabilities		94,251		776		93,475

⁽¹⁾  The exchange rate at June 30, 2011, was 80.73 yen to one dollar, or .9% stronger than the December 31, 2010, exchange rate of 81.49.

Market Risks of Financial Instruments

Our investment philosophy is to maximize investment income while emphasizing liquidity, safety and quality. Our investment objective, subject to appropriate risk constraints, is to fund policyholder obligations and other liabilities in a manner that enhances shareholders’ equity. We seek to achieve this objective through a diversified portfolio of fixed-income investments that reflects the characteristics of the liabilities it supports. Aflac invests primarily within the fixed income securities markets.

The following table details investment securities by segment.

Investment Securities by Segment
	Aflac Japan				Aflac U.S.
(In millions)	June 30, 2011		December 31, 2010		June 30, 2011			December 31, 2010
Securities available for sale, at fair value:
Fixed maturities		$      43,292		$      39,485		$       9,095	(1)		$       8,750	(1)
Perpetual securities		6,925		7,233		178			279
Equity securities		23		23		0			0
Total available for sale		50,240		46,741		9,273			9,029
Securities held to maturity, at amortized cost:
Fixed maturities		31,908		30,084		0			0
Total held to maturity		31,908		30,084		0			0
Total investment securities		$      82,148		$      76,825		$      9,273			$      9,029

⁽¹⁾  Excludes investment-grade, available-for-sale fixed-maturity securities held by the Parent Company of $119 in 2011 and $120 in 2010.

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Because we invest in fixed-income securities, our financial instruments are exposed primarily to three types of market risks: currency risk, interest rate risk, and credit risk.

Currency Risk

The functional currency of Aflac Japan’s insurance operations is the Japanese yen. All of Aflac Japan’s premiums, claims and commissions are received or paid in yen, as are most of its investment income and other expenses. While we have been investing a portion of our yen cash flow in dollar-denominated securities, most of Aflac Japan’s investments, cash and liabilities are yen-denominated. When yen-denominated securities mature or are sold, the proceeds are generally reinvested in yen-denominated securities. Aflac Japan holds these yen-denominated assets to fund its yen-denominated policy obligations. In addition, Aflac Incorporated has yen-denominated debt obligations.

Although we generally do not convert yen into dollars, we do translate financial statement amounts from yen into dollars for financial reporting purposes. Therefore, reported amounts are affected by foreign currency fluctuations. We report unrealized foreign currency translation gains and losses in accumulated other comprehensive income.

Aflac Japan maintains a portfolio of reverse-dual currency securities (yen-denominated debt securities with dollar coupon payments), which exposes Aflac to changes in foreign exchange rates. This foreign currency effect is accounted for as a component of unrealized gains or losses on available-for-sale securities in accumulated other comprehensive income. When the yen strengthens against the dollar, shareholders’ equity is negatively impacted and, conversely, when the yen weakens against the dollar, shareholders’ equity is positively impacted. Aflac Japan invests a portion of its assets in reverse-dual currency securities to provide a higher yield than those available on Japanese government or other public corporate bonds, while still adhering to prudent standards of credit quality. The yen/dollar exchange rate would have to strengthen to approximately 50 before the yield on these instruments would equal that of a comparable yen-denominated instrument.

On a consolidated basis, we attempt to minimize the exposure of shareholders’ equity to foreign currency translation fluctuations. We accomplish this by investing a portion of Aflac Japan’s investment portfolio in dollar-denominated securities and by the Parent Company’s issuance of yen-denominated debt (for additional information, see the discussion under the Hedging Activities subsection of MD&A). As a result, the effect of currency fluctuations on our net assets is reduced.

The following table demonstrates the effect of foreign currency fluctuations by presenting the dollar values of our yen-denominated assets and liabilities, and our consolidated yen-denominated net asset exposure at selected exchange rates.

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Dollar Value of Yen-Denominated Assets and Liabilities at Selected Exchange Rates
(In millions)	June 30, 2011									December 31, 2010
Yen/dollar exchange rates		65.73			80.73	(1)		95.73			66.49			81.49	(1)		96.49
Yen-denominated financial instruments:
Assets:
Securities available for sale:
Fixed maturities	$	37,550		$	30,573		$	25,782		$	35,905		$	29,296		$	24,742
Fixed maturities - consolidated variable interest entities		3,348			2,726			2,299			3,637			2,968			2,506
Perpetual securities		6,538			5,323			4,489			6,911			5,638			4,762
Perpetual securities - consolidated variable interest entities		1,756			1,430			1,206			1,745			1,424			1,203
Equity securities		23			19			16			23			19			16
Securities held to maturity:
Fixed maturities		38,429			31,289			26,386			36,119			29,470			24,889
Fixed maturities - consolidated variable interest entities		761			619			522			752			614			518
Cash and cash equivalents		310			253			213			939			766			647
Other financial instruments		163			133			112			153			125			105
Subtotal		88,878			72,365			61,025			86,184			70,320			59,388
Liabilities:
Notes payable		1,295			1,054			889			1,280			1,044			882
Japanese policyholder protection corporation		110			89			75			132			108			91
Subtotal		1,405			1,143			964			1,412			1,152			973
Net yen-denominated financial instruments		87,473			71,222			60,061			84,772			69,168			58,415
Other yen-denominated assets		10,937			8,905			7,509			10,338			8,435			7,124
Other yen-denominated liabilities		100,755			82,037			69,180			95,441			77,873			65,767
Consolidated yen-denominated net assets (liabilities) subject to foreign currency fluctuation	$	(2,345	)	$	(1,910	)	$	(1,610	)	$	(331	)	$	(270	)	$	(228)

⁽¹⁾ Actual period-end exchange rate

Effective January 1, 2010, we were required to consolidate certain variable interest entities (VIEs) upon the adoption of new accounting guidance. Prior to the adoption of this new accounting guidance, our beneficial interest in certain VIEs was a yen-denominated available-for-sale fixed maturity security. Upon consolidation on January 1, 2010, the original yen-denominated investment was derecognized and the underlying U.S. dollar-denominated fixed-maturity or perpetual securities and cross-currency swaps were recognized. While the combination of a U.S. dollar-denominated investment and cross-currency swap economically creates a yen-denominated investment, these investments will create foreign currency fluctuations but have no impact on our net investment hedge position. For additional information, see the Hedging Activities subsection of MD&A.

Some of the consolidated VIEs in our Aflac Japan portfolio use foreign currency swaps to convert foreign denominated cash flows to yen, the functional currency of Aflac Japan, in order to minimize cash flow fluctuations. Foreign currency swaps exchange an initial principal amount in two currencies, agreeing to re-exchange the currencies at a future date, at an agreed upon exchange rate. There may also be periodic exchanges of payments at specified intervals based on the agreed upon rates and notional amounts.

We are exposed to economic currency risk only when yen funds are actually converted into dollars. This primarily occurs when we repatriate funds from Aflac Japan to Aflac U.S., which is generally done annually. The exchange rates prevailing at the time of repatriation will differ from the exchange rates prevailing at the time the yen profits were earned. A portion of the repatriation may be used to service Aflac Incorporated’s yen-denominated notes payable with the remainder converted into dollars.

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Interest Rate Risk

Our primary interest rate exposure is to the impact of changes in interest rates on the fair value of our investments in debt and perpetual securities. We estimate that the reduction in the fair value of debt and perpetual securities we own resulting from a 100 basis point increase in market interest rates, based on our portfolios at June 30, 2011, and December 31, 2010, would be as follows:

	June 30,			December 31,
(In millions)	2011			2010
Effect on yen-denominated debt and perpetual securities	$	(8,157	)	$	(7,833	)
Effect on dollar-denominated debt and perpetual securities		(1,871	)		(1,366	)
Effect on total debt and perpetual securities	$	(10,028	)	$	(9,199	)

There are various factors that affect the fair value of our investment in debt and perpetual securities. Included in those factors are changes in the prevailing interest rate environment, which directly affect the balance of unrealized gains or losses for a given period in relation to a prior period. Decreases in market yields generally improve the fair value of debt and perpetual securities while increases in market yields generally have a negative impact on the fair value of our debt and perpetual securities. However, we do not expect to realize a majority of any unrealized gains or losses because we generally have the intent and ability to hold such securities until a recovery of value, which may be maturity. For additional information on unrealized losses on debt and perpetual securities, see Note 3 of the Notes to the Consolidated Financial Statements.

We attempt to match the duration of our assets with the duration of our liabilities. Currently, when debt and perpetual securities we own mature, the proceeds may be reinvested at a yield below that of the interest required for the accretion of policy benefit liabilities on policies issued in earlier years. However, adding riders to our older policies has helped offset negative investment spreads on these policies. Overall, adequate profit margins exist in Aflac Japan’s aggregate block of business because of changes in the mix of business and favorable experience from mortality, morbidity and expenses.

We entered into interest rate swap agreements related to our 20 billion yen variable interest rate Uridashi notes that will mature in September 2011 and our 5.5 billion yen variable interest rate Samurai notes that we issued subsequent to the end of the second quarter in July 2011. These agreements effectively convert the variable interest rate notes to fixed rate notes to eliminate the volatility in our interest expense. We also have interest rate swaps related to some of our consolidated VIEs. These interest rate swaps are primarily used to convert interest receipts on floating-rate fixed-maturity securities contracts to fixed rates. For further information, see Note 4 of the accompanying Notes to the Consolidated Financial Statements and Note 8 of the Notes to the Consolidated Financial Statements and the Interest Rate Risk subsection of MD&A in our annual report to shareholders for the year ended December 31, 2010.

Credit Risk

Our investment activities expose us to credit risk, which is a consequence of extending credit and/or carrying investment positions. However, we continue to adhere to prudent standards for credit quality. We accomplish this by considering our product needs and overall corporate objectives, in addition to credit risk. In evaluating the initial rating, we look at the overall senior issuer rating, the explicit rating for the actual issue or the rating for the security class, and, where applicable, the appropriate designation from the Securities Valuation Office (SVO) of the National Association of Insurance Commissioners (NAIC). All of our securities have ratings from either a nationally recognized statistical rating organization or the SVO of the NAIC. In addition, we perform extensive internal credit reviews to ensure that we are consistent in applying rating criteria for all of our securities.

We use specific criteria to judge the credit quality of both existing and prospective investments. Furthermore, we use several methods to monitor these criteria, including credit rating services and internal credit analysis. The distributions by credit rating of our purchases of debt securities, based on acquisition cost, were as follows:

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Composition of Purchases by Credit Rating

	Six Months Ended June 30, 2011			Twelve Months Ended December 31, 2010			Six Months Ended June 30, 2010
AAA		21.2	%		1.0	%		.7	%
AA		53.0			60.7			62.0
A		13.2			24.5			30.7
BBB		11.7			13.8			6.6
BB or lower		.9			.0			.0
Total		100.0	%		100.0	%		100.0	%

Purchases of securities from period to period are determined based on diversification objectives, relative value and availability of investment opportunities, while meeting our investment policy guidelines for liquidity, safety, and quality. We did not purchase any perpetual securities during the periods presented in the table above. The increase in purchases of AAA rated securities during the first six months of 2011 was due to an increase in purchases of U.S. Treasury securities. The purchases of BB or lower rated securities during the first six months of 2011 was due to a limited program that we initiated in May 2011 to invest in senior secured bank loans to U.S. and Canadian corporate borrowers, most of which have below-investment-grade ratings. The program is managed externally by a third party firm specializing in this asset class. Its mandate requires an average credit quality of BB-/Ba3, no loans rated below B/B2, and no exposure to any individual credit greater than 3% of the program’s assets. The objectives of this program include enhancing the yield on invested assets, achieving further diversification of credit risk, and mitigating the risk of rising interest rates through the acquisition of floating rate assets.

The distributions of debt and perpetual securities we own, by credit rating, were as follows:

Composition of Portfolio by Credit Rating

	June 30, 2011				December 31, 2010
	Amortized     Cost		Fair       Value		Amortized     Cost		Fair       Value
AAA		4.8 %		5.0 %		3.3 %		3.6 %
AA		37.5		37.9		35.7		36.5
A		32.9		33.2		36.0		36.6
BBB		19.4		19.1		18.8		18.7
BB or lower		5.4		4.8		6.2		4.6
Total		100.0 %		100.0 %		100.0 %		100.0 %

As of June 30, 2011, our direct and indirect exposure to securities in our investment portfolio that were guaranteed by third parties was immaterial both individually and in the aggregate.

Subordination Distribution

The majority of our total investments in debt and perpetual securities was senior debt at June 30, 2011, and December 31, 2010. We also maintained investments in subordinated financial instruments that primarily consisted of Lower Tier II, Upper Tier II, and Tier I securities, listed in order of seniority. The Lower Tier II (LTII) securities are debt instruments with fixed maturities. Our Upper Tier II (UTII) and Tier I investments consisted of debt instruments with fixed maturities and perpetual securities, which have an economic maturity as opposed to a stated maturity.

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The following table shows the subordination distribution of our debt and perpetual securities.

Subordination Distribution of Debt and Perpetual Securities
	June 30, 2011				December 31, 2010
(In millions)	Amortized Cost		Percentage of Total		Amortized Cost		Percentage   of Total
Senior notes	$	75,427		83.4  %	$	68,407		79.5  %
Subordinated securities:
Fixed maturities (stated maturity date):
Lower Tier II		6,734		7.4		8,679		10.1
Upper Tier II		0		.0		15		.0
Tier I(1)		543		.6		613		.7
Surplus notes		335		.4		335		.4
Trust preferred - non-banks		85		.1		85		.1
Other subordinated - non-banks		52		.1		52		.1
Total fixed maturities		7,749		8.6		9,779		11.4
Perpetual securities (economic maturity date):
Upper Tier II		4,758		5.3		5,285		6.1
Tier I		2,501		2.7		2,542		3.0
Total perpetual securities		7,259		8.0		7,827		9.1
Total debt and perpetual securities	$	90,435		100.0  %	$	86,013		100.0  %

⁽¹⁾ Includes trust preferred securities

As indicated in the table above, the percentage of our investment portfolio comprising subordinated fixed maturities and perpetual securities investments has declined due primarily to sales and impairments resulting from an implemented plan to reduce the risk exposure in our investment portfolio. See the Investment Concentrations section below for more information on these derisking activities.

Portfolio Composition

For information regarding the amortized cost for our investments in debt and perpetual securities, the cost for equity securities and the fair values of these investments, refer to Note 3 of the Notes to the Consolidated Financial Statements.

Investment Concentrations

As of June 30, 2011, our largest investment industry sector concentration was banks and financial institutions. Throughout 2008 and during the first half of 2009, concerns related to troubled residential mortgages in the United States, United Kingdom and Europe spread to structured investment securities. As a result, banks and financial institutions suffered significant write-downs of asset values, which pressured banks and financial institutions to seek capital and liquidity support. National governments responded with various forms of support, ranging from guarantees on new and existing debt to significant injections of capital. In the second half of 2009, asset valuations generally improved, and banks and other institutions continued to use exchanges and tender offers to enhance their core capital. However, 2010 brought new concerns about the fiscal integrity of peripheral European sovereign nations. As a result, Greece, Ireland, and most recently Portugal were forced to accept external funding aid in various forms to meet their financial obligations, as public markets were not accessible. The financial institutions of these countries have faced both liquidity and asset valuation pressures. Nationalization and/or recapitalization, along with loss-sharing among bondholders, all remain distinct risks for financial institutions in these countries and others facing similar fiscal pressures. While European politicians have become increasingly hesitant to put taxpayers at risk, with few exceptions, we believe nationalizations and burden-sharing among debt holders remain options of last resort.

See Note 3 of the Notes to the Consolidated Financial Statements for a discussion of our investment discipline, further discussion of our largest investment industry sector concentration (banks and financial institutions), and disclosure on our investment exposure to certain Eurozone countries (Greece, Ireland, Italy, Portugal and Spain).

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Our largest global investment exposures as of June 30, 2011, were as follows:

Largest Global Investment Positions
	Amortized		% of			Ratings
(In millions)	Cost		Total			Seniority	Moody’s	S&P	Fitch
Japan National Government(1)	$	20,037		22.2	%	Senior	Aa2	AA-	AA-
United States Treasury		1,806		2.0		Senior	Aaa	AAA	AAA
Israel Electric Corp.		908		1.0		Senior	Baa2	BB+	-
Republic of Tunisia(2)		810		0.9		Senior	Baa3	BBB-	BBB-
Republic of South Africa		757		0.8		Senior	A3	BBB+	BBB+
HSBC Holdings PLC		740		0.8
HSBC Finance Corporation (formerly Household Finance)		620		0.7		Senior	A3	A	AA-
HSBC Bank PLC (RAV Int’l. Ltd.)		40		0.0		Upper Tier II	A3	A	A+
The Hongkong & Shanghai Banking Corporation Ltd.		80		0.1		Upper Tier II	Aa3	-	-
Commerzbank AG (includes Dresdner Bank)		625		0.7
Commerzbank AG		434		0.5		Lower Tier II	Baa3	BBB-	A
Dresdner Bank AG (Dresdner Funding Trust IV)		191		0.2		Lower Tier II	Baa3	BBB-	A
UniCredit SpA		622		0.7
UniCredit Bank Austria		11		0.0		Lower Tier II	Aa3	AA+	-
UniCredit Bank AG (Hypovereinsbank)		248		0.3		Lower Tier II	Baa2	BBB+	A
UniCredit Bank AG (HVB Funding Trust I, III & VI)		363		0.4		Tier I	Baa3	BBB	BBB
Mizuho Financial Group Inc.		581		0.6
Mizuho Bank, Mizuho Finance Cayman & Aruba		581		0.6		Upper Tier II	A2	A-	-
Bank of Tokyo-Mitsubishi UFJ Ltd.		557		0.6
Bank of Tokyo-Mitsubishi UFJ Ltd. (BTMU Curacao Holdings NV)		557		0.6		Lower Tier II	Aa3	A	A-
Bank of America Corp. (includes Merrill Lynch)		557		0.6
Merrill Lynch & Co. Inc.		309		0.3		Senior	A2	A	A+
Bank of America Corp.		248		0.3		Lower Tier II	A3	A-	A
BNP Paribas (includes Fortis)		557		0.6
BNP Paribas		124		0.2		Senior	Aa2	AA	AA-
Fortis Bank SA-NV		309		0.3		Upper Tier II	A3	A	A-
Fortis Luxembourg Finance SA		124		0.1		Upper Tier II	Baa2	A	A-
Erste Group Bank AG		532		0.6
Erste Group Bank		124		0.1		Lower Tier II	A2	A-	A-
Erste Group Bank (Erste Finance Jersey Ltd 3 & 5)		408		0.5		Tier I	Ba1	-	BBB-
Investcorp SA		508		0.6
Investcorp Capital Limited		508		0.6		Senior	Ba2	-	BB+
National Grid PLC		496		0.6
National Grid Gas PLC		248		0.3		Senior	A3	A-	A
National Grid Electricity Transmission PLC		248		0.3		Senior	A3	A-	A
Sumitomo Mitsui Financial Group Inc.		496		0.6
Sumitomo Mitsui Banking Corporation		124		0.2		Lower Tier II	Aa3	A	A-
Sumitomo Mitsui Banking Corporation (SMBC International Finance)		372		0.4		Upper Tier II	A1	A-	-
Telecom Italia SpA		495		0.6
Telecom Italia Finance SA		495		0.6		Senior	Baa2	BBB	BBB
Citigroup Inc.		489		0.5
Citigroup Inc (includes Citigroup Global Markets Holdings Inc., Associates Corp.)		488		0.5		Senior	A3	A	A+
Citigroup Inc. (Citicorp)		1		0.0		Lower Tier II	Baa1	A-	A
JP Morgan Chase & Co. (including Bear Stearns)		488		0.5
JPMorgan Chase & Co (including Bear Stearns Companies Inc.)		434		0.5		Senior	Aa3	A+	AA-
JPMorgan Chase & Co (FNBC)		26		0.0		Senior	Aa1	AA-	-
JPMorgan Chase & Co (Bank One Corp.)		17		0.0		Lower Tier II	A1	A	A+
JPMorgan Chase & Co (NBD Bank)		11		0.0		Lower Tier II	Aa2	A+	A+
Commonwealth Bank of Australia		483		0.5
Commonwealth Bank of Australia		124		0.1		Lower Tier II	Aa3	AA-	AA-
Commonwealth Bank of Australia		248		0.3		Upper Tier II	-	A+	-
Bankwest		111		0.1		Upper Tier II	Aa3	AA-	-
Total	$	32,544		36.0	%
Total debt and perpetual securities	$	90,435		100.0	%

⁽¹⁾  JGBs or JGB-backed securities

⁽²⁾  Deemed by the Company to be below investment grade

As previously disclosed, we own long-dated debt instruments in support of our long-dated policyholder obligations. Included in our largest global investment holdings are legacy issues that date back many years. Additionally, the concentration of certain of our holdings of individual credit exposures has grown over time through merger and consolidation activity. Beginning in 2005, we have generally limited our investment exposures to issuers to no more than 5% of total adjusted capital (TAC) on a statutory accounting basis, with the exception of obligations of the Japanese and U.S. governments. However, existing investment exposures that exceeded 5% of TAC at the time this guidance was adopted, or exposures that may exceed this threshold from time to time through merger and consolidation activity, are not automatically reduced through sales of the issuers’ securities but rather are reduced over time consistent with our investment policy.

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During the three- and six-month periods ended June 30, 2011, we pursued strategic investment activities to lower the risk profile of our investment portfolio. Our primary focus was on reducing our exposure to peripheral Eurozone investments, perpetual securities, and investments in certain banks/financial institutions. Our primary derisking activities are summarized as follows:

Investment Derisking Activities
	Three Months Ended June 30, 2011
	Balance,				Realized Investment						Balance,
	Beginning of Period				Gains (Losses)						End of Period
			Amortized		Sales and								Amortized
(in millions)	Par Value		Cost		Redemptions			Impairments			Par Value		Cost
Peripheral Eurozone banks/financial institutions, by country:
Ireland(1)	$	956	$	621	$	(74	)	$	0		$	525	$	525
Greece		770		372		(45	)		0			0		0
Portugal		842		842		(99	)		(275	)		558		282
Perpetual securities:
Dexia SA (includes Dexia Bank Belgium & Dexia Overseas)	$	541	$	439	$	0		$	(184	)	$	557	$	268
Royal Bank of Scotland Group PLC		58		19		28			0			0		0
Lloyds Banking Group PLC (2)		33		7		18			0			0		0
Swedbank		349		293		2			0			235		178
(1)  Includes Irish Life and Permanent PLC perpetual securities (2)   Remainder of exposure to this issuer does not consist of perpetual securities
	Six Months Ended June 30, 2011
	Balance,				Realized Investment						Balance,
	Beginning of Period				Gains (Losses)						End of Period
			Amortized		Sales and								Amortized
(in millions)	Par Value		Cost		Redemptions			Impairments			Par Value		Cost
Peripheral Eurozone banks/financial institutions, by country:
Ireland(1)	$	1,220	$	710	$	(72	)	$	0		$	525	$	525
Greece		1,154		1,152		(222	)		(397	)		0		0
Portugal		859		859		(99	)		(275	)		558		282
Perpetual securities:
Dexia SA (includes Dexia Bank Belgium & Dexia Overseas)	$	552	$	448	$	0		$	(184	)	$	557	$	268
Royal Bank of Scotland Group PLC		58		19		28			0			0		0
Lloyds Banking Group PLC(2)		33		7		18			0			0		0
Swedbank		356		299		2			0			235		178
HSBC Holdings PLC		166		155		4			0			136		120

⁽¹⁾  Includes Irish Life and Permanent PLC perpetual securities

⁽²⁾  Remainder of exposure to this issuer does not consist of perpetual securities

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As a result of our primary derisking activities, we have experienced significant reductions in peripheral Eurozone, perpetual, and financial exposures on an amortized cost basis. At the start of 2008, sovereign and financial investments in peripheral Eurozone countries comprised 5.9% of total investments and cash, declining to 2.8% by the end of the second quarter of 2011. At the start of 2008, investments in perpetual securities comprised 14.7% of total investments and cash, declining to 7.9% by the end of the second quarter of 2011. At the start of 2008, investments in financial securities comprised 41.9% of total investments and cash, declining to 30.1% by the end of the second quarter of 2011. As a result of these derisking activities, we have no direct investment exposure to Greece, only senior indebtedness in Ireland, and materially lower exposure to Portuguese investments.

As a result of derisking activities to reduce our exposure to large concentrated positions that exceed 10% of total adjusted capital (TAC) on a statutory accounting basis, in the first six months of 2011 we reduced our exposure to Israel Electric by $89 million, the Republic of Tunisia by $104 million, HSBC by $100 million, Commerzbank by $94 million, and Bank of America Corp. by $104 million, on an amortized cost basis, resulting in a pretax net loss of $3 million ($2 million after-tax) for the three-month period and a pretax net gain of $6 million ($4 million after-tax) for the six-month period ended June 30, 2011.

As of the end of the second quarter of 2011, we believe we have substantially completed our investment derisking activities from a realized investment loss perspective. See the Investment Concentrations section of Note 3 of the Notes to the Consolidated Financial Statements for additional information.

We have investments in both publicly and privately issued securities. The outstanding amount of a particular issuance, as well as the level of activity in a particular issuance and market conditions, including credit events and the interest rate environment, affect liquidity regardless of whether it is publicly or privately issued.

The following table details investment securities by type of issuance.

Investment Securities by Type of Issuance
	June 30, 2011				December 31, 2010
(In millions)	Amortized Cost		Fair    Value		Amortized Cost		Fair   Value
Publicly issued securities:
Fixed maturities	$	37,409	$	38,971	$	31,098	$	32,457
Perpetual securities		216		214		235		256
Equity securities		12		14		13		14
Total publicly issued		37,637		39,199		31,346		32,727
Privately issued securities:
Fixed maturities		45,767		45,517		47,088		46,367
Perpetual securities		7,043		6,889		7,592		7,256
Equity securities		9		9		9		9
Total privately issued		52,819		52,415		54,689		53,632
Total investment securities	$	90,456	$	91,614	$	86,035	$	86,359

The following table details our privately issued investment securities.

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Privately Issued Securities
(Amortized cost, in millions)	June 30, 2011			December 31,             2010
Privately issued securities as a percentage of total debt and perpetual securities		58.4	%		63.6  %
Privately issued securities held by Aflac Japan	$	50,052		$	51,702
Privately issued securities held by Aflac Japan as a percentage of total debt and perpetual securities		55.3	%		60.1  %
Reverse-Dual Currency Securities (1)
(Amortized cost, in millions)	June 30, 2011			December 31,             2010
Privately issued reverse-dual currency securities	$	12,729		$	12,790
Publicly issued collateral structured as reverse-dual currency securities		2,858			2,844
Total reverse-dual currency securities	$	15,587		$	15,634
Reverse-dual currency securities as a percentage of total debt and perpetual securities		17.2	%		18.2  %

⁽¹⁾  Principal payments in yen and interest payments in dollars

The decrease in privately issued securities as a percentage of total debt and perpetual securities was due primarily to sales and impairments of investments and the reallocation of funds to investments in Japanese Government Bonds (JGBs) and U.S. Treasury securities in the first six months of 2011.

Aflac Japan has invested in privately issued securities to better match liability characteristics and secure higher yields than those available on Japanese government or other public corporate bonds. Aflac Japan’s investments in yen-denominated privately issued securities consist primarily of non-Japanese issuers and have longer maturities, thereby allowing us to improve our asset/liability matching and our overall investment returns. Most of our privately issued securities are issued under medium-term note programs and have standard documentation commensurate with credit ratings of the issuer, except when internal credit analysis indicates that additional protective and/or event-risk covenants are required.

Below-Investment-Grade and Split-Rated Securities

Below-investment-grade debt and perpetual securities represented 5.3% of total debt and perpetual securities at June 30, 2011, compared with 6.2% of total debt and perpetual securities at December 31, 2010, at amortized cost. Debt and perpetual securities classified as below investment grade at June 30, 2011 and December 31, 2010, were generally reported as available for sale and carried at fair value.

The below-investment-grade securities shown in the following table were investment grade at the time of purchase and were subsequently downgraded.

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Below-Investment-Grade Securities (3)
	June 30, 2011									December 31, 2010
(In millions)	Par Value		Amortized Cost		Fair Value		Unrealized Gain/Loss			Par Value		Amortized Cost		Fair Value		Unrealized       Gain/Loss
Republic of Tunisia(4)	$	810	$	810	$	893	$	83		$	*	$	*	$	*	$	*
Dexia SA (includes Dexia Bank Belgium & Dexia Overseas) (1)		557		268		268		0			368		264		186		(78)
Investcorp Capital Limited		508		508		355		(153	)		504		504		337		(167)
Lloyds Banking Group PLC (5)		408		358		376		18			440		364		387		23
UPM-Kymmene		384		384		293		(91	)		380		380		290		(90)
Ford Motor Credit Company		372		372		377		5			368		368		374		6
Banco Espirito Santo SA		372		209		209		0			*		*		*		*
CSAV (Tollo Shipping Co. S.A.)		297		297		149		(148	)		295		295		161		(134)
Bank of Ireland		248		248		139		(109	)		*		*		*		*
KBL European Private Bankers S.A (Part of KBC Group NV) (1)		248		138		143		5			245		137		144		7
Tokyo Electric Power Co., Inc.		223		227		217		(10	)		*		*		*		*
Caixa Geral de Depositos SA		186		73		73		0			*		*		*		*
BAWAG Capital Finance Jersey (1)		173		122		104		(18	)		172		120		116		(4)
IKB Deutsche Industriebank AG		161		107		107		0			160		160		104		(56)
Hypo Vorarlberg Capital Finance (1)		136		109		97		(12	)		135		108		97		(11)
Finance For Danish Industry (FIH)		124		124		102		(22	)		123		123		104		(19)
Aiful Corporation		124		37		37		0			184		67		67		0
Irish Life and Permanent PLC (1)		0		0		0		0			454		112		112		0
EFG Eurobank Ergasias		0		0		0		0			417		416		131		(285)
NBG (National Bank of Greece)		0		0		0		0			368		368		146		(222)
Alpha Bank		0		0		0		0			368		368		115		(253)
Swedbank (1)		*		*		*		*			356		299		314		15
Hella KG Hueck & Co.		*		*		*		*			270		269		224		(45)
Allied Irish Banks PLC		0		0		0		0			245		77		77		0
Royal Bank of Scotland Group PLC (1)		0		0		0		0			58		19		42		23
Commerzbank AG (formerly Dresdner Bank AG) (Tier 1 only)		0		0		0		0			53		55		46		(9)
Macy’s Inc.		*		*		*		*			53		58		58		0
Various Other Issuers (below $50 million in par value) (2)		409		378		360		(18	)		386		366		326		(40)
Total	$	5,740	$	4,769	$	4,299	$	(470	)	$	6,402	$	5,297	$	3,958	$	(1,339)

* Investment grade at respective reporting date

⁽¹⁾ Perpetual security

⁽²⁾ Includes 21 different issuers in 2011 and 19 different issuers in 2010

⁽³⁾ Does not include an externally managed portfolio of senior secured bank loans

⁽⁴⁾ Deemed by the Company to be below investment grade

⁽⁵⁾ Includes perpetual securities only at December 31, 2010

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In May 2011, we initiated a limited program to invest in senior secured bank loans to U.S. and Canadian corporate borrowers, most of which have below-investment-grade ratings. The program is managed externally by a third party firm specializing in this asset class. Its mandate requires an average credit quality of BB-/Ba3, no loans rated below B/B2, and no exposure to any individual credit greater than 3% of the program’s assets. The objectives of this program include enhancing the yield on invested assets, achieving further diversification of credit risk, and mitigating the risk of rising interest rates through the acquisition of floating rate assets. As of June 30, 2011, our investments in this program totaled $72 million at amortized cost.

Occasionally, a debt or perpetual security will be split rated. This occurs when one rating agency rates the security as investment grade while another rating agency rates the same security as below investment grade. Our policy is to review each issue on a case-by-case basis to determine if a split-rated security should be classified as investment grade or below investment grade. Our review includes evaluating the issuer’s credit position as well as current market pricing and other factors, such as the issuer’s or security’s inclusion on a credit rating downgrade watch list. Split-rated securities totaled $2.9 billion as of June 30, 2011, and $2.4 billion as of December 31, 2010, and represented 3% of total debt and perpetual securities, at amortized cost, at each period. The 10 largest split-rated securities as of June 30, 2011, were as follows:

Split-Rated Securities
(In millions)	Amortized Cost		Investment-Grade Status
Israel Electric Corp.	$	908	Investment Grade
Erste Group Bank (Erste Finance Jersey Ltd 3 & 5)(1)		408	Investment Grade
SLM Corp.		402	Investment Grade
Bank of Ireland		248	Below Investment Grade
Banco Espirito Santo SA		209	Below Investment Grade
Swedbank(1)		134	Investment Grade
Dexia Overseas SA(1)		94	Below Investment Grade
Caixa Geral De Depositos SA		73	Below Investment Grade
Sparebanken Vest(1)		60	Investment Grade
Macy’s Inc.		58	Investment Grade

⁽¹⁾ Perpetual security

Other-than-temporary Impairment

See Note 3 of the Notes to the Consolidated Financial Statements for a discussion of our impairment policy.

Unrealized Investment Gains and Losses

The following table provides details on amortized cost, fair value and unrealized gains and losses for our investments in debt and perpetual securities by investment-grade status as of June 30, 2011.

(In millions)	Total Amortized Cost		Total Fair Value		Percentage of Total Fair Value			Gross Unrealized Gains		Gross         Unrealized         Losses
Available-for-sale securities:
Investment-grade securities	$	53,686	$	55,238		60.3	%	$	2,583	$	1,031
Below-investment-grade securities		4,841		4,371		4.8			125		595
Held-to-maturity securities:
Investment-grade securities		31,908		31,982		34.9			976		902
Total	$	90,435	$	91,591		100.0	%	$	3,684	$	2,528

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The following table presents an aging of debt and perpetual securities in an unrealized loss position as of June 30, 2011.

Aging of Unrealized Losses
	Total		Total		Less than Six Months				Six Months to Less than 12 Months				12 Months or Longer
(In millions)	Amortized Cost		Unrealized Loss		Amortized Cost		Unrealized Loss		Amortized Cost		Unrealized Loss		Amortized Cost		Unrealized Loss
Available-for-sale securities:
Investment-grade securities	$	14,756	$	1,031	$	2,284	$	34	$	3,052	$	91	$	9,420	$	906
Below-investment-grade securities		2,301		595		465		28		5		1		1,831		566
Held-to-maturity securities:
Investment-grade securities		15,367		902		2,775		43		2,138		80		10,454		779
Total	$	32,424	$	2,528	$	5,524	$	105	$	5,195	$	172	$	21,705	$	2,251

The following table presents a distribution of unrealized losses on debt and perpetual securities by magnitude as of June 30, 2011.

Percentage Decline From Amortized Cost
	Total		Total		Less than 20%				20% to 50%				Greater than 50%
(In millions)	Amortized Cost		Unrealized Loss		Amortized Cost		Unrealized Loss		Amortized Cost		Unrealized Loss		Amortized Cost		Unrealized Loss
Available-for-sale securities:
Investment-grade securities	$	14,756	$	1,031	$	14,383	$	937	$	373	$	94	$	0	$	0
Below-investment-grade securities		2,301		595		1,007		102		1,294		493		0		0
Held-to-maturity securities:
Investment-grade securities		15,367		902		15,118		846		249		56		0		0
Total	$	32,424	$	2,528	$	30,508	$	1,885	$	1,916	$	643	$	0	$	0

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The following table presents the 10 largest unrealized loss positions in our portfolio as of June 30, 2011.

(In millions)	Credit Rating	Amortized Cost	Fair Value	Unrealized     Loss
Investcorp Capital Limited	BB	$ 508	$ 355		$ (153)
CSAV (Tollo Shipping Co. S.A.)	B	297	149		(148)
Bank of Ireland	BB	248	139		(109)
UPM-Kymmene	BB	384	293		(91)
SLM Corp.	BBB	402	320		(82)
Bank of Tokyo-Mitsubishi UFJ LTD	AA	557	506		(51)
Svenska Handelsbanken(1)	A	218	168		(50)
Bank of America Corp. (Includes Merrill Lynch)	A	557	510		(47)
Republic of Poland	A	254	209		(45)
Union Fenosa Finance B.V.	BBB	458	413		(45)

⁽¹⁾ Perpetual security

Declines in fair value noted above were impacted by changes in interest rates and credit spreads, yen/dollar exchange rates, and issuer credit status. However, we believe it would be inappropriate to recognize impairment charges because we believe the changes in fair value are temporary. See the Investment Concentrations and Unrealized Investment Gains and Losses sections in Note 3 of the Notes to the Consolidated Financial Statements for further discussions of unrealized losses related to Ireland, financial institutions including perpetual securities, and other corporate investments.

Investment Valuation and Cash

We estimate the fair values of our securities available for sale on a monthly basis. We monitor the estimated fair values obtained from our custodian and pricing brokers and those derived from our discounted cash flow pricing model for consistency from month to month, while considering current market conditions. We also periodically discuss with our custodian and pricing brokers the pricing techniques they use to monitor the consistency of their approach and periodically assess the appropriateness of the valuation level assigned to the values obtained from them. See Note 5 of the Notes to the Consolidated Financial Statements for the fair value hierarchy classification of our securities available for sale as of June 30, 2011.

Cash and cash equivalents totaled $1.3 billion, or 1.4% of total investments and cash, as of June 30, 2011, compared with $2.1 billion, or 2.4%, at December 31, 2010. For a discussion of the factors affecting our cash balance, see the Operating Activities, Investing Activities and Financing Activities subsections of this MD&A.

For additional information concerning our investments, see Notes 3, 4, and 5 of the Notes to the Consolidated Financial Statements.

Deferred Policy Acquisition Costs

The following table presents deferred policy acquisition costs by segment.

(In millions)	June 30, 2011	December 31, 2010	% Change
Aflac Japan	$      7,213	$    6,964	3.6 %  (1)
Aflac U.S.	2,815	2,770	1.6
Total	$    10,028	$    9,734	3.0 %

⁽¹⁾ Aflac Japan’s deferred policy acquisition costs increased 2.6% in yen during the six months ended June 30, 2011.

The increase in Aflac Japan’s deferred policy acquisition costs was primarily driven by new annualized premium sales.

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Policy Liabilities

The following table presents policy liabilities by segment.

(In millions)	June 30, 2011	December 31, 2010	% Change
Aflac Japan	$    78,565	$    74,872	4.9 %  (1)
Aflac U.S.	7,799	7,581	2.9
Other	2	3	.0
Total	$    86,366	$    82,456	4.7 %

⁽¹⁾ Aflac Japan’s policy liabilities increased 4.0% in yen during the six months ended June 30, 2011.

The increase in Aflac Japan’s policy liabilities was primarily the result of the growth and aging of our in-force business.

Notes Payable

Notes payable totaled $3.0 billion at June 30, 2011 and December 31, 2010. The ratio of debt to total capitalization (debt plus shareholders’ equity, excluding the unrealized gains and losses on investment securities and derivatives) was 21.4% as of June 30, 2011, compared with 21.7% as of December 31, 2010. See Note 6 of the accompanying Notes to the Consolidated Financial Statements for additional information on our notes payable.

Benefit Plans

Aflac Japan and Aflac U.S. have various benefit plans. For additional information on our Japanese and U.S. plans, see Note 9 of the accompanying Notes to the Consolidated Financial Statements and Note 13 of the Notes to the Consolidated Financial Statements in our annual report to shareholders for the year ended December 31, 2010.

Policyholder Protection Corporation

The Japanese insurance industry has a policyholder protection system that provides funds for the policyholders of insolvent insurers. On December 12, 2008, legislation was enacted extending the framework of the Life Insurance Policyholder Protection Corporation (LIPPC), which included government fiscal measures supporting the LIPPC through March 2012.

See the Policyholder Protection Corporation subsection of MD&A in our annual report to shareholders for the year ended December 31, 2010, for additional information.

Hedging Activities

Net Investment Hedge

Our primary exposure to be hedged is our investment in Aflac Japan, which is affected by changes in the yen/dollar exchange rate. To mitigate this exposure, we have taken the following courses of action. First, Aflac Japan maintains a portfolio of dollar-denominated securities, which serve as an economic currency hedge of a portion of our investment in Aflac Japan. The foreign exchange gains and losses related to this portfolio are taxable in Japan and the U.S. when the securities mature or are sold. Until maturity or sale, deferred tax expense or benefit associated with the foreign exchange gains or losses are recognized in other comprehensive income. Second, we have designated the Parent Company’s yen-denominated liabilities (Samurai and Uridashi notes and yen-denominated loans) as a hedge of our investment in Aflac Japan. At the beginning of each quarter, we make our net investment hedge designation. If the total of our designated yen-denominated liabilities is equal to or less than our net investment in Aflac Japan, the hedge is deemed to be effective and the related exchange effect is reported in the unrealized foreign currency component of other comprehensive income. Should these designated yen-denominated liabilities exceed our investment in Aflac Japan, the foreign exchange effect on the portion of the liabilities that exceeds our investment in Aflac Japan would be recognized in net earnings. We estimate that if our yen-denominated liabilities exceeded our investment in Aflac Japan by 10 billion yen, we would report a foreign exchange gain/loss of approximately $1 million for every 1% yen weakening/strengthening in the end-of-period yen/dollar exchange rate. For hedge designation purposes, Aflac Japan yen-denominated net assets exceeded the Parent Company’s designated yen-denominated liabilities as of April 1, 2011, the date of hedge designation for the second quarter of 2011. As a result, our net investment hedge was effective during the six-month period ended June 30, 2011. Our net investment hedge was also effective during the six-month period ended June 30, 2010.

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Effective January 1, 2010, the yen net asset figure calculated for hedging purposes differs from the yen-denominated net asset position as discussed in the Currency Risk subsection of MD&A. As disclosed in that subsection, the consolidation of the underlying assets in certain VIEs on January 1, 2010, required that we derecognize our yen-denominated investment in the VIE and recognize the underlying U.S. dollar-denominated fixed-maturity or perpetual securities and cross-currency swaps. While these U.S. dollar investments will create foreign currency fluctuations, the combination of the U.S. dollar-denominated investment and the cross-currency swap economically creates a yen-denominated investment that qualifies for inclusion as a component of our investment in Aflac Japan.

The dollar values of our yen-denominated net assets, including certain VIEs as yen-denominated investments for net investment hedging purposes as discussed above, are summarized as follows (translated at end-of-period exchange rates):

(In millions)	June 30, 2011		December 31,     2010
Aflac Japan yen-denominated net assets	$	1,830	$	3,282
Parent Company yen-denominated net liabilities		(1,053)		(1,041)
Consolidated yen-denominated net assets (liabilities) subject to foreign currency translation fluctuations	$	777	$	2,241

The decline in yen-denominated net assets subject to foreign currency fluctuation is primarily due to an increase in the amount of investment in dollar-denominated investments during the first six months of 2011.

Cash Flow Hedges

Effective January 1, 2010, as a result of the adoption of new accounting guidance and the corresponding consolidation of additional VIEs, we have freestanding derivative instruments that are reported in the consolidated balance sheet at fair value and are reported in other assets and other liabilities. Several of these freestanding derivatives qualify for hedge accounting, including interest rate and foreign currency swaps. Interest rate and foreign currency swaps are used within VIEs to hedge the risk arising from changes in interest rates and foreign currency exchange rates, respectively. Changes in the fair value of a derivative that is designated and qualifies as a cash flow hedge are recorded in other comprehensive income. Any hedge ineffectiveness is recorded immediately in current period earnings as net realized investment gains and losses. This hedging relationship was effective during the six-month periods ending June 30, 2011 and 2010. See Note 4 of the Notes to the Consolidated Financial Statements for additional information.

We have interest rate swap agreements related to our 20 billion yen variable interest rate Uridashi notes that will mature in September 2011 and our 5.5 billion yen variable interest rate Samurai notes that we issued in July 2011. By entering into these contracts, we swapped the variable interest rates to a fixed interest rate of 1.52% for the Uridashi notes and 1.475% for the Samurai notes. We have designated these interest rate swaps as a hedge of the variability in our interest cash flows associated with the respective variable interest rate notes. The notional amounts and terms of the swaps match the principal amount and terms of the variable interest rate notes, and the swaps had no value at inception. GAAP requires that the change in the fair value of the swap contracts be recorded in other comprehensive income so long as the hedge is deemed effective. Any ineffectiveness is recognized in net earnings. The hedge for the Uridashi notes was effective during the six-month periods ended June 30, 2011 and 2010; therefore, there was no impact on net earnings during those periods. See Note 4 of the Notes to the Consolidated Financial Statements for additional information.

Off-Balance Sheet Arrangements

As of June 30, 2011, we had no material letters of credit, standby letters of credit, guarantees or standby repurchase obligations. See Note 14 of the Notes to the Consolidated Financial Statements in our annual report to shareholders for the year ended December 31, 2010, for information on material unconditional purchase obligations that are not recorded on our balance sheet.

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CAPITAL RESOURCES AND LIQUIDITY

Aflac provides the primary sources of liquidity to the Parent Company through dividends and management fees. The following table presents the amounts provided for the six-month periods ending June 30:

Liquidity Provided by Aflac to Parent Company
(In millions)	2011		2010
Dividends declared or paid by Aflac	$	282	$	230
Management fees paid by Aflac		115		95

The primary uses of cash by the Parent Company are shareholder dividends, the repurchase of its common stock and interest on its outstanding indebtedness. The Parent Company’s sources and uses of cash are reasonably predictable and are not expected to change materially in the future. For additional information, see the Financing Activities subsection of this MD&A.

The Parent Company also accesses debt security markets to provide additional sources of capital. In March 2009, we filed a shelf registration statement with the SEC that allows us to issue an indefinite amount of senior and subordinated debt, in one or more series, from time to time through May 2012. As of June 30, 2011, we have issued $2.0 billion of senior notes under this registration statement. In November 2009, we filed an additional shelf registration statement with Japanese regulatory authorities that allows us to issue up to 100 billion yen of yen-denominated Samurai notes in Japan through November 2011. In July 2011, the Parent Company issued 50 billion yen of yen-denominated Samurai notes under this registration statement. If issued, the remaining 50 billion yen (approximately $619 million using the June 30, 2011, exchange rate) of yen-denominated Samurai notes will not be available to U.S. persons. We believe outside sources for additional debt and equity capital, if needed, will continue to be available. For additional information, see Note 6 of the Notes to the Consolidated Financial Statements.

The principal sources of cash for our insurance operations are premiums and investment income. The primary uses of cash by our insurance operations are policy claims, commissions, operating expenses, income taxes and payments to the Parent Company for management fees and dividends. Both the sources and uses of cash are reasonably predictable.

When making an investment decision, our first consideration is based on product needs. Our investment objectives provide for liquidity through the purchase of investment-grade debt securities. These objectives also take into account duration matching, and because of the long-term nature of our business, we have adequate time to react to changing cash flow needs.

As a result of policyholder aging, claims payments are expected to gradually increase over the life of a policy. Therefore, future policy benefit reserves are accumulated in the early years of a policy and are designed to help fund future claims payments. We expect our future cash flows from premiums and our investment portfolio to be sufficient to meet our cash needs for benefits and expenses.

Our financial statements adequately convey our financing arrangements during the periods presented. We have not engaged in material intra-period short-term financings during the periods presented that are not otherwise reported in our balance sheet. We do not have any restrictive financial covenants related to our notes payable, and we were in compliance with all of the covenants of our notes payable at June 30, 2011. We have not entered into transactions involving the transfer of financial assets with an obligation to repurchase financial assets that have been accounted for as a sale under applicable accounting standards, including securities lending transactions. See Note 3 of the Notes to the Consolidated Financial Statements and Note 1 of the Notes to the Consolidated Financial Statements in our annual report to shareholders for the year ended December 31, 2010, for more information on our securities lending activity. We do not have a known trend, demand, commitment, event or uncertainty that would reasonably result in our liquidity increasing or decreasing by a material amount. Our cash and cash equivalents include unrestricted cash on hand, money market instruments, and other debt instruments with a maturity of 90 days or less when purchased, all of which has minimal market, settlement or other risk exposure.

Consolidated Cash Flows

We translate cash flows for Aflac Japan’s yen-denominated items into U.S. dollars using weighted-average exchange rates. In periods when the yen weakens, translating yen into dollars causes fewer dollars to be reported. When the yen strengthens, translating yen into dollars causes more dollars to be reported.

78

The following table summarizes consolidated cash flows by activity for the six-month periods ended June 30.

(In millions)	2011		2010
Operating activities	$	4,378	$	3,023
Investing activities		(5,034)		(3,176)
Financing activities		(175)		(7)
Exchange effect on cash and cash equivalents		1		21
Net change in cash and cash equivalents	$	(830)	$	(139)

Operating Activities

The following table summarizes operating cash flows by source for the six-month periods ended June 30.

(In millions)	2011		2010
Aflac Japan	$	4,067	$	2,665
Aflac U.S. and other operations		311		358
Total	$	4,378	$	3,023

Investing Activities

Operating cash flow is primarily used to purchase debt securities to meet future policy obligations. The following table summarizes investing cash flows by source for the six-month periods ended June 30.

(In millions)	2011		2010
Aflac Japan	$	(4,835)	$	(2,499)
Aflac U.S. and other operations		(199)		(677)
Total	$	(5,034)	$	(3,176)

Prudent portfolio management dictates that we attempt to match the duration of our assets with the duration of our liabilities. Currently, when our debt and perpetual securities mature, the proceeds may be reinvested at a yield below that required for the accretion of policy benefit liabilities on policies issued in earlier years. However, the long-term nature of our business and our strong cash flows provide us with the ability to minimize the effect of mismatched durations and/or yields identified by various asset adequacy analyses. When market opportunities arise, we dispose of selected debt and perpetual securities that are available for sale to improve the duration matching of our assets and liabilities, improve future investment yields, and/or rebalance our portfolio. As a result, dispositions before maturity can vary significantly from year to year. Dispositions before maturity were approximately 3% of the year-to-date average investment portfolio of debt and perpetual securities available for sale during the six-month periods ended June 30, 2011, and 2010.

Financing Activities

Consolidated cash used by financing activities was $175 million in the first six months of 2011, compared with $7 million for the same period of 2010. Cash returned to shareholders through dividends and treasury stock purchases was $482 million during the six-month period ended June 30, 2011, compared with $262 million through dividends during the six-month period ended June 30, 2010.

In July 2011, the Parent Company issued 50 billion yen of yen-denominated Samurai notes (approximately $619 million using the June 30, 2011, exchange rate). See Note 6 of the Notes to the Consolidated Financial Statements for further information on this debt issuance. In September 2011, 35 billion yen (approximately $434 million using the June 30, 2011, exchange rate) of our Uridashi notes will mature. We plan to use existing cash to redeem these notes.

We have no restrictive financial covenants related to our notes payable. We were in compliance with all of the covenants of our notes payable at June 30, 2011.

79

The following tables present a summary of treasury stock activity during the six-month periods ended June 30.

Treasury Stock Purchased
(In millions of dollars and thousands of shares)	2011		2010
Treasury stock purchases	$	222	$	5
Number of shares purchased:
Open market		4,100		0
Other		155		95
Total shares purchased		4,255		95
Treasury Stock Issued
(In millions of dollars and thousands of shares)	2011		2010
Stock issued from treasury	$	26	$	36
Number of shares issued		909		1,624

During the first six months of 2011, we purchased 4.1 million shares of our common stock in the open market. As of June 30, 2011, a remaining balance of 26.3 million shares of our common stock was available for purchase under a share repurchase authorization by our board of directors in 2008. We anticipate ending up at the low end of our six to 12 million share repurchase target in 2011.

Cash dividends paid to shareholders were $.30 per share in the second quarter of 2011, compared with $.28 per share in the second quarter of 2010. The following table presents the dividend activity for the six-month periods ended June 30.

(In millions)	2011		2010
Dividends paid in cash	$	260	$	262
Dividends through issuance of treasury shares		21		0
Total dividends to shareholders	$	281	$	262

In July 2011, the board of directors declared the third quarter cash dividend of $.30 per share. The dividend is payable on September 1, 2011, to shareholders of record at the close of business on August 17, 2011.

Regulatory Restrictions

Aflac is domiciled in Nebraska and is subject to its regulations. A life insurance company’s statutory capital and surplus is determined according to rules prescribed by the NAIC, as modified by the insurance department in the insurance company’s state of domicile. Statutory accounting rules are different from GAAP and are intended to emphasize policyholder protection and company solvency. The continued long-term growth of our business may require increases in the statutory capital and surplus of our insurance operations. Aflac’s insurance operations may secure additional statutory capital through various sources, such as internally generated statutory earnings or equity contributions by the Parent Company from funds generated through debt or equity offerings. The NAIC’s risk-based capital (RBC) formula is used by insurance regulators to help identify inadequately capitalized insurance companies. The RBC formula quantifies insurance risk, business risk, asset risk and interest rate risk by weighing the types and mixtures of risks inherent in the insurer’s operations. Aflac’s company action level RBC ratio was estimated to be within the range of 480% and 520% as of June 30, 2011. Aflac’s RBC ratio remains high and reflects a strong capital and surplus position.

In addition to limitations and restrictions imposed by U.S. insurance regulators, Japan’s FSA may not allow profit repatriations from Aflac Japan if the transfers would cause Aflac Japan to lack sufficient financial strength for the protection of policyholders. The FSA maintains its own solvency standard. See the Japanese Regulatory Environment subsection of this MD&A for a discussion of changes to the calculation of the solvency margin ratio. As of March 31, 2011, Aflac Japan’s solvency margin ratio calculated using the current method was 919.3%, which significantly exceeded regulatory minimums, and the solvency margin ratio under the new standards, disclosed as reference information, was 512.2%. As expected, based on the results of the calculation of the solvency margin ratio under the new standards, our relative position within the industry did not materially change.

Payments are made from Aflac Japan to the Parent Company for management fees and to Aflac U.S. for allocated expenses and remittances of earnings. The following details Aflac Japan remittances for the six-month periods ended June 30.

80

Aflac Japan Remittances
(In millions of dollars and billions of yen)	2011		2010
Aflac Japan management fees paid to Parent Company	$	13	$	16
Expenses allocated to Aflac Japan		20		16
Aflac Japan profit remittances to Aflac U.S. in dollars		0		317
Aflac Japan profit remittances to Aflac U.S. in yen		0		28.7

We anticipate that Aflac Japan will remit profits of 11.0 billion yen in the third quarter of 2011. We anticipate that 2011 profit remittances will total 11.0 billion yen, compared with full-year remittances of 28.7 billion yen in 2010.

For additional information on regulatory restrictions on dividends, profit repatriations and other transfers, see Note 12 of the Notes to the Consolidated Financial Statements and the Regulatory Restrictions subsection of MD&A, both in our annual report to shareholders for the year ended December 31, 2010.

Other

For information regarding commitments and contingent liabilities, see Note 10 of the Notes to the Consolidated Financial Statements.

81

Item 3. Quantitative and Qualitative Disclosures about Market Risk

The information required by Item 3 is incorporated by reference from the Market Risks of Financial Instruments subsection of MD&A in Part I, Item 2 of this report.

Item 4. Controls and Procedures

Disclosure Controls and Procedures

The Company’s management, with the participation of the Company’s Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of the Company’s disclosure controls and procedures (as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) as of the end of the period covered by this quarterly report (the “Evaluation Date”). Based on such evaluation, the Company’s Chief Executive Officer and Chief Financial Officer have concluded that, as of the Evaluation Date, the Company’s disclosure controls and procedures are effective.

Changes in Internal Control Over Financial Reporting

There have not been any changes in the Company’s internal control over financial reporting (as such term is defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during the second fiscal quarter of 2011 that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

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PART II. OTHER INFORMATION

Item 1A. Risk Factors

The following should be read in conjunction with and supplements and amends the risk factors that may affect the Company’s business or operations described under “Risk Factors” in Part I, Item 1A. of our 2010 annual report on Form 10-K for the year ended December 31, 2010.

The concentration of our investment portfolios in any particular single-issuer or sector of the economy may have an adverse effect on our financial position or results of operations.

The concentration of our investment portfolios in any particular single-issuer, industry, group of related industries or geographic sector could have an adverse effect on our investment portfolios and, consequently, on our results of operations and financial position. Events or developments that have a negative impact on any particular single-issuer industry, group of related industries or geographic sector may have a greater adverse effect on the investment portfolios to the extent that the portfolios are concentrated rather than diversified. At June 30, 2011, approximately 30% of our total portfolio of debt and perpetual securities, on an amortized cost basis, was in the bank and financial institution sector. In addition, at June 30, 2011, with the exception of investments in Japanese government bonds (JGBs) and U.S. Treasury securities, we had four legacy single-issuer investments that exceeded the upper bound of our investment risk exposure limits, which is considered to be 10% of total adjusted capital (TAC) on a statutory accounting basis.

The impact of the earthquake and tsunami natural disaster in March 2011 and related events at the nuclear plant in Japan and their aftermath could adversely affect our financial condition and results of operations.

Aflac Japan’s first quarter 2011 financial results reflected a provision of 3.0 billion yen, or $37 million, for claims related to the earthquake and tsunami that struck Japan on March 11, 2011. These claims were offset by reserve releases and reinsurance of 2.0 billion yen, or $25 million, resulting in a net income statement impact of 1.0 billion yen, or $12 million, for benefits expense in the first quarter. Our financial results in the first quarter of 2011 also reflected .7 billion yen, or $8 million, of operating expenses resulting from the earthquake and tsunami. Our initial claims estimates were based on judgments that considered assumptions and projections which are subject to change to reflect future information. Although the current impact of the natural disaster and its related events has not had a material impact on our financial position or results of operations, actual claims may vary from our estimates and may further negatively impact our financial results.

Our business operations in Japan have continued to be fully functional in the aftermath of the natural disaster. However, the recent events in Japan could impair the recovery of the Japanese economy, which could have an adverse effect on our results of operations and financial condition. The policy response from the Japanese government to the disaster could involve the issuance of JGBs. Increased borrowing to finance reconstruction of the affected areas coupled with the fiscal challenges already facing Japan could reduce the creditworthiness of JGBs, which account for a significant portion of our investment portfolio. Although questions remain with regard to Japan’s electricity supply as a result of the problems caused by the nuclear plant which was damaged by the natural disaster, we do not expect Aflac’s operations in Japan to be materially impacted.

We will continue to monitor the business and economic conditions in Japan in light of the recent events and will continue to update our assessment of the natural disaster impact on our results of operations.

83

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

Issuer Purchases of Equity Securities

During the second quarter of 2011, we repurchased shares of Aflac common stock as follows:

						Total
						Number		Maximum
						of Shares		Number of
						Purchased		Shares that
						as Part of		May Yet Be
	Total					Publicly		Purchased
	Number of			Average		Announced		Under the
	Shares			Price Paid		Plans or		Plans or
Period	Purchased			Per Share		Programs		Programs
April 1 - April 30		228		$	54.26		0		27,270,254
May 1 - May 31		380,274			48.74		380,000		26,890,254
June 1 - June 30		622,069			45.53		620,000		26,270,254
Total		1,002,571	(2)	$	46.75		1,000,000		26,270,254	(1)

⁽¹⁾  The total remaining shares available for purchase at June 30, 2011, consisted of 26,270,254 shares related to a 30,000,000 share repurchase authorization by the board of directors announced in January 2008.

⁽²⁾  During the second quarter of 2011, 2,571 shares were purchased in connection with income tax withholding obligations related to the vesting of restricted-share-based awards during the period.

84

Item 6. Exhibits

(a) EXHIBIT INDEX:

3.0	-	Articles of Incorporation, as amended – incorporated by reference from Form 10-Q for June 30, 2008, Exhibit 3.0 (File No. 001-07434).
3.1	-	Bylaws of the Corporation, as amended – incorporated by reference from Form 10-Q for March 31, 2010, Exhibit 3.1 (File No. 001-07434).
4.0	-	There are no instruments with respect to long-term debt not being registered in which the total amount of securities authorized exceeds 10% of the total assets of Aflac Incorporated and its subsidiaries on a consolidated basis. We agree to furnish a copy of any long-term debt instrument to the Securities and Exchange Commission upon request.
4.1	-	Indenture, dated as of May 21, 2009, between Aflac Incorporated and The Bank of New York Mellon Trust Company, N.A., as trustee – incorporated by reference from Form 8-K dated May 21, 2009, Exhibit 4.1 (File No. 001-07434).
4.2	-	First Supplemental Indenture, dated as of May 21, 2009, between Aflac Incorporated and The Bank of New York Mellon Trust Company, N.A., as trustee (including form of 8.500% Senior Note due 2019) – incorporated by reference from Form 8-K dated May 21, 2009, Exhibit 4.2 (File No. 001-07434).
4.3	-	Second Supplemental Indenture, dated as of December 17, 2009, between Aflac Incorporated and The Bank of New York Mellon Trust Company, N.A., as trustee (including form of 6.900% Senior Note due 2039) – incorporated by reference from Form 8-K dated December 14, 2009, Exhibit 4.1 (File No. 001-07434).
4.4	-	Third Supplemental Indenture, dated as of August 9, 2010, between Aflac Incorporated and The Bank of New York Mellon Trust Company, N.A., as trustee (including form of 6.45% Senior Note due 2040) - incorporated by reference from Form 8-K dated August 4, 2010, Exhibit 4.1 (File No. 001-07434).
4.5	-	Fourth Supplemental Indenture, dated as of August 9, 2010, between Aflac Incorporated and The Bank of New York and Mellon Trust Company, N.A., as trustee (including form of 3.45% Senior Note due 2015) – incorporated by reference from Form 8-K dated August 4, 2010, Exhibit 4.2 (File No. 001-07434).
10.0*	-	American Family Corporation Retirement Plan for Senior Officers, as amended and restated October 1, 1989 – incorporated by reference from 1993 Form 10-K, Exhibit 10.2 (File No. 001- 07434).
10.1*	-	Amendment to American Family Corporation Retirement Plan for Senior Officers, dated December 8, 2008 – incorporated by reference from 2008 Form 10-K, Exhibit 10.1 (File No. 001-07434).
10.2*	-	Aflac Incorporated Supplemental Executive Retirement Plan, as amended and restated January 1, 2009 – incorporated by reference from 2008 Form 10-K, Exhibit 10.5 (File No. 001- 07434).
10.3*	-	Aflac Incorporated Executive Deferred Compensation Plan, as amended and restated, effective January 1, 2009 – incorporated by reference from 2008 Form 10-K, Exhibit 10.9 (File No. 001-07434).
10.4*	-	First Amendment to the Aflac Incorporated Executive Deferred Compensation Plan dated June 1, 2009 – incorporated by reference from Form 10-Q for June 30, 2009, Exhibit 10.4 (File No. 001-07434).
10.5*	-	Aflac Incorporated Amended and Restated 2009 Management Incentive Plan – incorporated by reference from the 2008 Shareholders’ Proxy Statement, Appendix B (File No. 001-07434).
10.6*	-	First Amendment to the Aflac Incorporated Amended and Restated 2009 Management Incentive Plan, dated December 19, 2008 – incorporated by reference from 2008 Form 10-K, Exhibit 10.11 (File No. 001-07434).
10.7*	-	Aflac Incorporated Sales Incentive Plan – incorporated by reference from 2007 Form 10-K, Exhibit 10.8 (File No. 001-07434).
10.8*	-	1999 Aflac Associate Stock Bonus Plan, as amended, dated February 11, 2003 – incorporated by reference from 2002 Form 10-K, Exhibit 99.2 (File No. 001-07434).

85

10.9*	-	Aflac Incorporated 1997 Stock Option Plan – incorporated by reference from the 1997 Shareholders’ Proxy Statement, Appendix B (File No. 001-07434).
10.10*	-	Form of Officer Stock Option Agreement (Non-Qualifying Stock Option) under the Aflac Incorporated 1997 Stock Option Plan – incorporated by reference from Form 8-K dated January 28, 2005, Exhibit 10.5 (File No. 001-07434).
10.11*	-	Form of Officer Stock Option Agreement (Incentive Stock Option) under the Aflac Incorporated 1997 Stock Option Plan – incorporated by reference from Form 8-K dated January 28, 2005, Exhibit 10.6 (File No. 001-07434).
10.12*	-	Notice of grant of stock options and stock option agreement to officers under the Aflac Incorporated 1997 Stock Option Plan – incorporated by reference from Form 8-K dated January 28, 2005, Exhibit 10.7 (File No. 001-07434).
10.13*	-	2004 Aflac Incorporated Long-Term Incentive Plan, dated May 3, 2004 – incorporated by reference from the 2004 Notice and Proxy Statement, Exhibit B (File No. 001-07434).
10.14*	-	First Amendment to the 2004 Aflac Incorporated Long-Term Incentive Plan, dated May 2, 2005 – incorporated by reference from Form 10-Q for March 31, 2005, Exhibit 10.1 (File No. 001- 07434).
10.15*	-	Second Amendment to the 2004 Aflac Incorporated Long-Term Incentive Plan, dated February 14, 2006 – incorporated by reference from Form 10-Q for March 31, 2006, Exhibit 10.32 (File No. 001-07434).
10.16*	-	Third Amendment to the 2004 Aflac Incorporated Long-Term Incentive Plan, dated December 19, 2008 – incorporated by reference from 2008 Form 10-K, Exhibit 10.21 (File No. 001-07434).
10.17*	-	Form of Non-Employee Director Stock Option Agreement (NQSO) under the 2004 Aflac Incorporated Long-Term Incentive Plan – incorporated by reference from Form 8-K dated January 28, 2005, Exhibit 10.1 (File No. 001-07434).
10.18*	-	Notice of grant of stock options to non-employee director under the 2004 Aflac Incorporated Long-Term Incentive Plan – incorporated by reference from Form 8-K dated January 28, 2005, Exhibit 10.2 (File No. 001-07434).
10.19*	-	Form of Non-Employee Director Restricted Stock Award Agreement under the 2004 Aflac Incorporated Long-Term Incentive Plan – incorporated by reference from Form 8-K dated January 28, 2005, Exhibit 10.3 (File No. 001-07434).
10.20*	-	Notice of restricted stock award to non-employee director under the 2004 Aflac Incorporated Long-Term Incentive Plan – incorporated by reference from Form 8-K dated January 28, 2005, Exhibit 10.4 (File No. 001-07434).
10.21*	-	Form of Officer Restricted Stock Award Agreement under the 2004 Aflac Incorporated Long- Term Incentive Plan – incorporated by reference from Form 8-K dated February 7, 2005, Exhibit 10.1 (File No. 001-07434).
10.22*	-	Notice of restricted stock award to officers under the 2004 Aflac Incorporated Long-Term Incentive Plan – incorporated by reference from Form 8-K dated February 7, 2005, Exhibit 10.2 (File No. 001-07434).
10.23*	-	Form of Officer Stock Option Agreement (Non-Qualifying Stock Option) under the 2004 Aflac Incorporated Long-Term Incentive Plan – incorporated by reference from Form 8-K dated February 7, 2005, Exhibit 10.3 (File No. 001-07434).
10.24*	-	Form of Officer Stock Option Agreement (Incentive Stock Option) under the 2004 Aflac Incorporated Long-Term Incentive Plan – incorporated by reference from Form 8-K dated February 7, 2005, Exhibit 10.4 (File No. 001-07434).
10.25*	-	Notice of grant of stock options to officers under the 2004 Aflac Incorporated Long-Term Incentive Plan – incorporated by reference from Form 8-K dated February 7, 2005, Exhibit 10.5 (File No. 001-07434).
10.26*	-	Aflac Incorporated Retirement Plan for Directors Emeritus, as amended and restated, dated February 9, 2010 – incorporated by reference from 2009 Form 10-K, Exhibit 10.26 (File No. 001-07434).

86

10.27*	-	Amendment to Aflac Incorporated Retirement Plan for Directors Emeritus, as amended and restated, dated August 10, 2010 – incorporated by reference from Form 10-Q for September 30, 2010, Exhibit 10.27 (File No. 001-07434).
10.28*	-	Aflac Incorporated Employment Agreement with Daniel P. Amos, dated August 1, 1993 – incorporated by reference from 1993 Form 10-K, Exhibit 10.4 (File No. 001-07434).
10.29*	-	Amendment to Aflac Incorporated Employment Agreement with Daniel P. Amos, dated December 8, 2008 – incorporated by reference from 2008 Form 10-K, Exhibit 10.32 (File No. 001-07434).
10.30*	-	Aflac Incorporated Employment Agreement with Kriss Cloninger III, dated February 14, 1992, and as amended November 12, 1993 – incorporated by reference from 1993 Form 10-K, Exhibit 10.6 (File No. 001-07434).
10.31*	-	Amendment to Aflac Incorporated Employment Agreement with Kriss Cloninger III, dated November 3, 2008 – incorporated by reference from 2008 Form 10-K, Exhibit 10.34 (File No. 001-07434).
10.32*	-	Amendment to Aflac Incorporated Employment Agreement with Kriss Cloninger III, dated December 19, 2008 – incorporated by reference from 2008 Form 10-K, Exhibit 10.35 (File No. 001-07434).
10.33*	-	Amendment to Aflac Incorporated Employment Agreement with Kriss Cloninger III, dated March 15, 2011 – incorporated by reference from Form 10-Q for March 31, 2011, Exhibit 10.33 (File No. 001-07434).
10.34*	-	Aflac Incorporated Employment Agreement with Paul S. Amos II, dated January 1, 2005 – incorporated by reference from Form 8-K dated February 7, 2005, Exhibit 10.2 (File No. 001- 07434).
10.35*	-	Amendment to Aflac Incorporated Employment Agreement with Paul S. Amos II, dated December 19, 2008 – incorporated by reference from 2008 Form 10-K, Exhibit 10.39 (File No. 001-07434).
10.36*	-	Aflac Incorporated Employment Agreement with Joey Loudermilk, dated September 12, 1994 and as amended December 10, 2008 – incorporated by reference from 2008 Form 10-K, Exhibit 10.40 (File No. 001-07434).
10.37*	-	Aflac Incorporated Employment Agreement with Tohru Tonoike, effective February 1, 2007 – incorporated by reference from 2008 Form 10-K, Exhibit 10.41 (File No. 001-07434).
10.38*	-	Amendment to Aflac Incorporated Employment Agreement with Tohru Tonoike, dated February 9, 2010 – incorporated by reference from 2009 Form 10-K, Exhibit 10.36 (File No. 001-07434).
10.39*	-	Aflac Retirement Agreement with E. Stephen Purdom, dated February 15, 2000 – incorporated by reference from 2000 Form 10-K, Exhibit 10.13 (File No. 001-07434).
11	-	Statement regarding the computation of per-share earnings for the Registrant.
12	-	Statement regarding the computation of ratio of earnings to fixed charges for the Registrant.
15	-	Letter from KPMG LLP regarding unaudited interim financial information.
31.1	-	Certification of CEO dated August 5, 2011, required by Rule 13a-14(a) or Rule 15d-14(a) of the Securities Exchange Act of 1934.
31.2	-	Certification of CFO dated August 5, 2011, required by Rule 13a-14(a) or Rule 15d-14(a) of the Securities Exchange Act of 1934.
32	-	Certification of CEO and CFO dated August 5, 2011, pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS	-	XBRL Instance Document.(1)
101.SCH	-	XBRL Taxonomy Extension Schema.
101.CAL	-	XBRL Taxonomy Extension Calculation Linkbase.
101.DEF	-	XBRL Taxonomy Extension Definition Linkbase.
101.LAB	-	XBRL Taxonomy Extension Label Linkbase.
101.PRE	-	XBRL Taxonomy Extension Presentation Linkbase.

87

(1)

Includes the following materials contained in this Quarterly Report on Form 10-Q for the period ended June 30, 2011, formatted in XBRL (eXtensible Business Reporting Language): (i) Consolidated Statements of Earnings, (ii) Consolidated Balance Sheets, (iii) Consolidated Statements of Shareholders’ Equity, (iv) Consolidated Statements of Cash Flows, (v) Consolidated Statements of Comprehensive Income (Loss), (vi) Notes to the Consolidated Financial Statements

*

Management contract or compensatory plan or arrangement required to be filed as an exhibit pursuant to Item 6 of this report

88

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	Aflac Incorporated
August 5, 2011	/s/ Kriss Cloninger III
	(Kriss Cloninger III)
	President, Chief Financial Officer, Treasurer and Director
August 5, 2011	/s/ June Howard
	(June Howard) Senior Vice President, Financial Services; Chief Accounting Officer

89

EX-11

Aflac Incorporated 2nd Quarter 2011 Form 10-Q

EXHIBIT 11

Aflac Incorporated and Subsidiaries

Computation of Earnings Per Share

	Three Months Ended June 30,				Six Months Ended June 30,
	2011		2010		2011		2010
Numerator (In millions):
Basic and diluted: net earnings applicable to common stock	$	280	$	581	$	674	$	1,217
Denominator (In thousands):
Weighted-average outstanding shares used in the computation of earnings per share - basic		466,498		468,824		467,317		468,377
Dilutive effect of share-based awards		3,254		3,715		3,673		4,120
Weighted-average outstanding shares used in the computation of earnings per share - diluted		469,752		472,539		470,990		472,497
Earnings per share:
Basic	$	.60	$	1.24	$	1.44	$	2.60
Diluted		.60		1.23		1.43		2.58

EX-12

Aflac Incorporated 2nd Quarter 2011 Form 10-Q

EXHIBIT 12

Aflac Incorporated and Subsidiaries

Ratio of Earnings to Fixed Charges

	Three Months Ended June 30,				Six Months Ended June 30,
(In thousands)	2011		2010		2011		2010
Fixed charges:
Interest expense(1)	$	46,318	$	32,993	$	91,625	$	65,675
Interest on investment-type contracts		12,038		9,467		23,614		18,761
Rental expense deemed interest		232		232		482		482
Total fixed charges	$	58,588	$	42,692	$	115,721	$	84,918
Earnings before income tax(1)	$	452,852	$	889,382	$	1,052,578	$	1,863,107
Add back:
Total fixed charges		58,588		42,692		115,721		84,918
Total earnings before income tax and fixed charges	$	511,440	$	932,074	$	1,168,299	$	1,948,025
Ratio of earnings to fixed charges		8.7x		21.8x		10.1x		22.9x

⁽¹⁾ Excludes interest expense on income tax liabilities

EX-15

Aflac Incorporated 2nd Quarter 2011 Form 10-Q

EXHIBIT 15

KPMG LLP

303 Peachtree Street, N.E.

Suite 2000

Atlanta, GA 30308

August 5, 2011

Aflac Incorporated

Columbus, Georgia

Re: Registration Statement No. 333-159111 and 333-155678 on Form S-3; 333-161269, 333-135327, 333-158969; 333-135324, 333-27883, and 333-115105 on Form S-8

With respect to the subject registration statements, we acknowledge our awareness of the use therein of our report dated August 5, 2011, related to our review of interim financial information.

Pursuant to Rule 436 under the Securities Act of 1933 (the Act), such report is not considered part of a registration statement prepared or certified by an independent registered public accounting firm, or a report prepared or certified by an independent registered public accounting firm within the meaning of Sections 7 and 11 of the Act.

Atlanta, Georgia

EX-31.1

Aflac Incorporated 2nd Quarter 2011 Form 10-Q

EXHIBIT 31.1

Certification of Chief Executive Officer

I, Daniel P. Amos, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Aflac Incorporated;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: August 5, 2011	/s/ Daniel P. Amos
	Daniel P. Amos
	Chairman and Chief Executive Officer

EX-31.2

Aflac Incorporated 2nd Quarter 2011 Form 10-Q

EXHIBIT 31.2

Certification of Chief Financial Officer

I, Kriss Cloninger III, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Aflac Incorporated;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: August 5, 2011	/s/ Kriss Cloninger III
	Kriss Cloninger III
	President, Chief Financial Officer and Treasurer

EX-32

Aflac Incorporated 2nd Quarter 2011 Form 10-Q

EXHIBIT 32

Certification of CEO and CFO Pursuant to

18 U.S.C. Section 1350,

as Adopted Pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Quarterly Report on Form 10-Q of Aflac Incorporated (the “Company”) for the quarterly period ended June 30, 2011, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), Daniel P. Amos, as Chief Executive Officer of the Company, and Kriss Cloninger III, as Chief Financial Officer of the Company, each hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of his knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Daniel P. Amos
Name:	Daniel P. Amos
Title:	Chief Executive Officer
Date:	August 5, 2011

/s/ Kriss Cloninger III
Name:	Kriss Cloninger III
Title:	Chief Financial Officer
Date:	August 5, 2011

XML



Gain or Loss Recognized in Income on Non-qualifying Strategies (Detail) (Non-qualifying strategies, USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized within Net Realized Investment Gains (Losses)	$ (27)	$ (106)	$ (53)	$ (86)
Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized within Net Realized Investment Gains (Losses)	4	8	(1)	3
Foreign currency swaps
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized within Net Realized Investment Gains (Losses)	3	(48)	(26)	(44)
Credit default swaps
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized within Net Realized Investment Gains (Losses)	(43)	(66)	(38)	(45)
Others
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized within Net Realized Investment Gains (Losses)	$ 9		$ 12

XML



Consolidated Balance Sheets (USD $) In Millions	Jun. 30, 2011		Dec. 31, 2010
Securities available for sale, at fair value:
Equity securities (cost $21 in 2011 and $22 in 2010)	$ 23		$ 23
Securities held to maturity, at amortized cost:
Fixed maturities	31,908		30,084
Other investments	153		135
Cash and cash equivalents	1,291		2,121
Total investments and cash	92,984		88,230
Receivables	879		661
Accrued investment income	739		738
Deferred policy acquisition costs	10,028		9,734
Property and equipment, at cost less accumulated depreciation	611		620
Other	991	[1]	1,056	[1]
Total assets	106,232		101,039
Policy liabilities:
Future policy benefits	74,472		72,103
Unpaid policy claims	3,855		3,719
Unearned premiums	1,306		1,197
Other policyholders' funds	6,733		5,437
Total policy liabilities	86,366		82,456
Notes payable	3,048		3,038
Income taxes	2,186		1,969
Payables for return of cash collateral on loaned securities	338		191
Other	2,313	[2]	2,329	[2]
Commitments and contingent liabilities (Note 10)
Total liabilities	94,251		89,983
Shareholders' equity:
Common stock of $.10 par value. In thousands: authorized 1,900,000 shares in 2011 and 2010; issued 663,412 shares in 2011 and 662,660 shares in 2010	66		66
Additional paid-in capital	1,372		1,320
Retained earnings	14,587		14,194
Accumulated other comprehensive income (loss):
Unrealized foreign currency translation gains	914		926
Unrealized gains (losses) on investment securities:
Unrealized gains (losses) on securities not other-than-temporarily impaired	752		36
Unrealized gains (losses) on other-than-temporarily impaired securities	0		(3)
Unrealized gains (losses) on derivatives	6		31
Pension liability adjustment	(125)		(128)
Treasury stock, at average cost	(5,591)		(5,386)
Total shareholders' equity	11,981		11,056
Total liabilities and shareholders' equity	106,232		101,039
Investments other than Consolidated Variable Interest Entities
Securities available for sale, at fair value:
Fixed maturities	47,380		43,100
Perpetual securities	5,559		5,974
Securities held to maturity, at amortized cost:
Fixed maturities	31,289		29,470
Variable Interest Entity, Consolidated
Securities available for sale, at fair value:
Fixed maturities	5,126		5,255
Perpetual securities	1,544		1,538
Securities held to maturity, at amortized cost:
Fixed maturities	$ 619		$ 614

[1] Includes $495 in 2011 and $564 in 2010 of derivatives from consolidated variable interest entities

[2] Includes $584 in 2011 and $741 in 2010 of derivatives from consolidated variable interest entities

XML



Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	Jun. 30, 2011	Dec. 31, 2010
Securities available for sale, Equity securities, cost	$ 21	$ 22
Common stock, par value	$ 0.10	$ 0.10
Common stock, shares authorized	1,900,000	1,900,000
Common stock, shares issued	663,412	662,660
Securities held to maturity, Fixed maturities, fair value	31,982	30,469
Investments other than Consolidated Variable Interest Entities
Securities available for sale, Fixed maturities, amortized cost	46,415	43,133
Securities available for sale, Perpetual securities, amortized cost	5,627	6,209
Securities held to maturity, Fixed maturities, fair value	31,405	29,899
Variable Interest Entity, Consolidated
Securities available for sale, Fixed maturities, amortized cost	4,853	4,969
Securities available for sale, Perpetual securities, amortized cost	1,632	1,618
Securities held to maturity, Fixed maturities, fair value	577	570
Derivatives from consolidated VIEs, assets	495	564
Derivatives from consolidated VIEs, liabilities	$ 584	$ 741

XML



Changes in Available-For-Sale Investments and Derivatives Classified as Level 3 (Detail) (USD $) In Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2011		Jun. 30, 2010		Jun. 30, 2011		Jun. 30, 2010
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period	$ 465		$ 4,622		$ 560		$ 5,057
Effect of change in accounting principle							(575)	[1]
Revised balance, beginning of period							4,482
Realized gains or losses included in earnings	(19)		59		(83)		68
Unrealized gains or losses included in other comprehensive income	3		(122)		(25)		89
Purchases	0		0		0		0
Issuances	0		0		0		0
Sales	0		(534)		0		(763)
Settlements	125		0		122		0
Transfers into Level 3	0		549	[2]	0		698	[2]
Transfers out of Level 3	0		(4,210)	[3]	0		(4,210)	[3]
Balance, end of period	574		364		574		364
Change in unrealized gains (losses) still held	17	[4]	(66)	[5]	(60)	[4]	(45)	[5]
Mortgage- and asset-backed Securities | Fixed Maturities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period	248		63		267		62
Effect of change in accounting principle							0	[1]
Revised balance, beginning of period							62
Realized gains or losses included in earnings	0		0		(6)		0
Unrealized gains or losses included in other comprehensive income	12		1		2		2
Purchases	0		0		0		0
Issuances	0		0		0		0
Sales	0		(1)		0		(1)
Settlements	(3)		0		(6)		0
Transfers into Level 3	0		219	[2]	0		219	[2]
Transfers out of Level 3	0		0	[3]	0		0	[3]
Balance, end of period	257		282		257		282
Change in unrealized gains (losses) still held	0	[4]	0	[5]	(6)	[4]	0	[5]
Public Utilities | Fixed Maturities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period	0		488		0		497
Effect of change in accounting principle							0	[1]
Revised balance, beginning of period							497
Realized gains or losses included in earnings	0		0		0		0
Unrealized gains or losses included in other comprehensive income	0		0		0		(9)
Purchases	0		0		0		0
Issuances	0		0		0		0
Sales	0		(2)		0		(2)
Settlements	0		0		0		0
Transfers into Level 3	0		0	[2]	0		0	[2]
Transfers out of Level 3	0		(459)	[3]	0		(459)	[3]
Balance, end of period	0		27		0		27
Change in unrealized gains (losses) still held	0	[4]	0	[5]	0	[4]	0	[5]
Sovereign and Supranational | Fixed Maturities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period	0		298		0		293
Effect of change in accounting principle							0	[1]
Revised balance, beginning of period							293
Realized gains or losses included in earnings	0		0		0		0
Unrealized gains or losses included in other comprehensive income	0		0		0		5
Purchases	0		0		0		0
Issuances	0		0		0		0
Sales	0		0		0		0
Settlements	0		0		0		0
Transfers into Level 3	0		0	[2]	0		0	[2]
Transfers out of Level 3	0		(298)	[3]	0		(298)	[3]
Balance, end of period	0		0		0		0
Change in unrealized gains (losses) still held	0	[4]	0	[5]	0	[4]	0	[5]
Banks/financial Institutions | Fixed Maturities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period	420		1,103		386		1,240
Effect of change in accounting principle							0	[1]
Revised balance, beginning of period							1,240
Realized gains or losses included in earnings	0		0		1		5
Unrealized gains or losses included in other comprehensive income	(22)		1		11		34
Purchases	0		0		0		0
Issuances	0		0		0		0
Sales	0		0		0		(175)
Settlements	0		0		0		0
Transfers into Level 3	0		330	[2]	0		330	[2]
Transfers out of Level 3	0		(1,082)	[3]	0		(1,082)	[3]
Balance, end of period	398		352		398		352
Change in unrealized gains (losses) still held	0	[4]	0	[5]	1	[4]	0	[5]
Other Corporate | Fixed Maturities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period	0		1,253		0		1,248
Effect of change in accounting principle							0	[1]
Revised balance, beginning of period							1,248
Realized gains or losses included in earnings	0		0		0		0
Unrealized gains or losses included in other comprehensive income	0		1		0		6
Purchases	0		0		0		0
Issuances	0		0		0		0
Sales	0		0		0		0
Settlements	0		0		0		0
Transfers into Level 3	0		0	[2]	0		0	[2]
Transfers out of Level 3	0		(1,202)	[3]	0		(1,202)	[3]
Balance, end of period	0		52		0		52
Change in unrealized gains (losses) still held	0	[4]	0	[5]	0	[4]	0	[5]
Collateralized Debt Obligations | Fixed Maturities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period	5		4		5		267
Effect of change in accounting principle							(263)	[1]
Revised balance, beginning of period							4
Realized gains or losses included in earnings	(1)		0		(1)		0
Unrealized gains or losses included in other comprehensive income	0		0		0		0
Purchases	0		0		0		0
Issuances	0		0		0		0
Sales	0		0		0		0
Settlements	0		0		0		0
Transfers into Level 3	0		0	[2]	0		0	[2]
Transfers out of Level 3	0		0	[3]	0		0	[3]
Balance, end of period	4		4		4		4
Change in unrealized gains (losses) still held	(1)	[4]	0	[5]	(1)	[4]	0	[5]
Banks/financial Institutions | Perpetual Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period	0		1,695		0		1,441
Effect of change in accounting principle							0	[1]
Revised balance, beginning of period							1,441
Realized gains or losses included in earnings	0		125		0		108
Unrealized gains or losses included in other comprehensive income	0		(125)		0		51
Purchases	0		0		0		0
Issuances	0		0		0		0
Sales	0		(531)		0		(585)
Settlements	0		0		0		0
Transfers into Level 3	0		0	[2]	0		149	[2]
Transfers out of Level 3	0		(1,164)	[3]	0		(1,164)	[3]
Balance, end of period	0		0		0		0
Change in unrealized gains (losses) still held	0	[4]	0	[5]	0	[4]	0	[5]
Equity Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period	4		9		4		9
Effect of change in accounting principle							0	[1]
Revised balance, beginning of period							9
Realized gains or losses included in earnings	0		0		0		0
Unrealized gains or losses included in other comprehensive income	0		0		0		0
Purchases	0		0		0		0
Issuances	0		0		0		0
Sales	0		0		0		0
Settlements	0		0		0		0
Transfers into Level 3	0		0	[2]	0		0	[2]
Transfers out of Level 3	0		(5)	[3]	0		(5)	[3]
Balance, end of period	4		4		4		4
Change in unrealized gains (losses) still held	0	[4]	0	[5]	0	[4]	0	[5]
Foreign currency swaps | Derivatives
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period	126				241
Realized gains or losses included in earnings	25				(39)
Unrealized gains or losses included in other comprehensive income	13				(38)
Purchases	0				0
Issuances	0				0
Sales	0				0
Settlements	0				0
Transfers into Level 3	0				0
Transfers out of Level 3	0				0
Balance, end of period	164				164
Change in unrealized gains (losses) still held	25	[4]			(39)	[4]
Credit default swaps | Derivatives
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period	(338)		(291)		(343)		0
Effect of change in accounting principle							(312)	[1]
Revised balance, beginning of period							(312)
Realized gains or losses included in earnings	(43)		(66)		(38)		(45)
Unrealized gains or losses included in other comprehensive income	0		0		0		0
Purchases	0		0		0		0
Issuances	0		0		0		0
Sales	0		0		0		0
Settlements	128		0		128		0
Transfers into Level 3	0		0	[2]	0		0	[2]
Transfers out of Level 3	0		0	[3]	0		0	[3]
Balance, end of period	(253)		(357)		(253)		(357)
Change in unrealized gains (losses) still held	$ (7)	[4]	$ (66)	[5]	$ (15)	[4]	$ (45)	[5]

[1] Change in accounting for VIEs effective January 1, 2010. See Notes 1, 3, and 4 for additional information.

[2] Due to a lack of visibility to observe significant inputs to price and credit downgrades of respective issuers of securities to below investment grade

[3] A result of changing our pricing methodology to using a pricing index for estimating fair value instead of obtaining pricing of the securities from brokers or arrangers

[4] Represents the amount of total gains or losses for the period, included in earnings, attributable to the change in unrealized gains (losses) relating to assets classified as Level 3 that were still held at June 30, 2011

[5] Represents the amount of total gains or losses for the period, included in earnings, attributable to the change in unrealized gains (losses) relating to assets classified as Level 3 that were still held at June 30, 2010

XML



NOTES PAYABLE (Tables)

6 Months Ended

Jun. 30, 2011

Schedule of Long-term Debt Instruments

A summary of notes payable follows:

(In millions)	June 30, 2011			December 31, 2010
8.50% senior notes due May 2019	$	850		$	850
6.45% senior notes due August 2040		448	(1)		448	(1)
6.90% senior notes due December 2039		396	(2)		396	(2)
3.45% senior notes due August 2015		300			300
Yen-denominated Uridashi notes:
1.52% notes due September 2011 (principal amount 15 billion yen)		186			184
2.26% notes due September 2016 (principal amount 8 billion yen)		99			98
Variable interest rate notes due September 2011 (.58% at June 2011, principal amount 20 billion yen)		248			245
Yen-denominated Samurai notes:
1.87% notes due June 2012 (principal amount 26.6 billion yen)		329			327
Yen-denominated loans:
3.60% loan due July 2015 (principal amount 10 billion yen)		124			123
3.00% loan due August 2015 (principal amount 5 billion yen)		62			61
Capitalized lease obligations payable through 2016		6			6
Total notes payable	$	3,048		$	3,038

⁽¹⁾ $450 issuance net of a $2 underwriting discount that is being amortized over the life of the notes

⁽²⁾ $400 issuance net of a $4 underwriting discount that is being amortized over the life of the notes

XML



Document and Entity Information	6 Months Ended
	Jun. 30, 2011	Jul. 28, 2011
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2011
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	Q2
Trading Symbol	AFL
Entity Registrant Name	AFLAC INC
Entity Central Index Key	0000004977
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		467,160,513

XML



DERIVATIVE INSTRUMENTS - Additional Information (Detail) In Millions, unless otherwise specified	Jun. 30, 2011 Year	Jun. 30, 2011 Issuance of three series of Samurai notes Yen Denominated Variable Rate Samurai Notes Due In Three Years USD ($)	Jun. 30, 2011 Issuance of three series of Samurai notes Yen Denominated Variable Rate Samurai Notes Due In Three Years JPY (¥)	Jun. 30, 2011 Variable interest rate yen-denominated Uridashi notes due September 2011 JPY (¥)	Dec. 31, 2010 Variable interest rate yen-denominated Uridashi notes due September 2011 JPY (¥)
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Hedging activity, weighted-average period (in years)	25
Notes payable, principal amount		$ 68.0	¥ 5,500.0	¥ 20,000.0	¥ 20,000.0
Notes payable, effective interest rate		1.475%	1.475%	1.52%

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BENEFIT PLANS (Tables)

6 Months Ended

Jun. 30, 2011

Components of Retirement Expense for Japanese and U.S. Pension Plans

The components of retirement expense for the Japanese and U.S. pension plans were as follows:

	Three Months Ended June 30,								Six Months Ended June 30,
	2011				2010				2011				2010
(In millions)	Japan		U.S.		Japan		U.S.		Japan		U.S.		Japan		U.S.
Components of net periodic benefit cost:
Service cost	$	4	$	3	$	4	$	3	$	8	$	7	$	7	$	6
Interest cost		2		4		1		4		3		8		2		7
Expected return on plan assets		(1)		(3)		0		(3)		(2)		(7)		(1)		(6)
Amortization of net actuarial loss		1		2		0		1		2		3		1		2
Net periodic benefit cost	$	6	$	6	$	5	$	5	$	11	$	11	$	9	$	9

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Summary of the Balance Sheet Classification of the Derivative Fair Value Amounts, as well as the Gross Asset and Liability Fair Value Amounts (Detail) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Derivatives, Fair Value [Line Items]
Net Derivatives Notional Amount	$ 5,855	$ 6,174
Net Derivatives Fair Value	(89)	(177)
Asset Derivatives Fair Value	495	564
Liability Derivatives Fair Value	(584)	(741)
Cash flow hedges
Derivatives, Fair Value [Line Items]
Net Derivatives Notional Amount	823	860
Net Derivatives Fair Value	70	168
Asset Derivatives Fair Value	94	180
Liability Derivatives Fair Value	(24)	(12)
Cash flow hedges | Interest rate swaps
Derivatives, Fair Value [Line Items]
Net Derivatives Notional Amount	248	245
Net Derivatives Fair Value	(1)	(2)
Asset Derivatives Fair Value	0	0
Liability Derivatives Fair Value	(1)	(2)
Cash flow hedges | Foreign currency swaps
Derivatives, Fair Value [Line Items]
Net Derivatives Notional Amount	575	615
Net Derivatives Fair Value	71	170
Asset Derivatives Fair Value	94	180
Liability Derivatives Fair Value	(23)	(10)
Non-qualifying strategies
Derivatives, Fair Value [Line Items]
Net Derivatives Notional Amount	5,032	5,314
Net Derivatives Fair Value	(159)	(345)
Asset Derivatives Fair Value	401	384
Liability Derivatives Fair Value	(560)	(729)
Non-qualifying strategies | Interest rate swaps
Derivatives, Fair Value [Line Items]
Net Derivatives Notional Amount	546	743
Net Derivatives Fair Value	121	56
Asset Derivatives Fair Value	125	124
Liability Derivatives Fair Value	(4)	(68)
Non-qualifying strategies | Foreign currency swaps
Derivatives, Fair Value [Line Items]
Net Derivatives Notional Amount	3,927	3,815
Net Derivatives Fair Value	(27)	(58)
Asset Derivatives Fair Value	276	260
Liability Derivatives Fair Value	(303)	(318)
Non-qualifying strategies | Credit default swaps
Derivatives, Fair Value [Line Items]
Net Derivatives Notional Amount	559	756
Net Derivatives Fair Value	(253)	(343)
Asset Derivatives Fair Value	0	0
Liability Derivatives Fair Value	(253)	(343)
Cash flow hedges and non-qualifying strategies
Derivatives, Fair Value [Line Items]
Net Derivatives Notional Amount	5,855	6,174
Net Derivatives Fair Value	(89)	(177)
Asset Derivatives Fair Value	495	564
Liability Derivatives Fair Value	(584)	(741)
Other assets
Derivatives, Fair Value [Line Items]
Net Derivatives Notional Amount	2,267	2,364
Net Derivatives Fair Value	495	564
Asset Derivatives Fair Value	495	564
Liability Derivatives Fair Value	0	0
Other Liabilities
Derivatives, Fair Value [Line Items]
Net Derivatives Notional Amount	3,588	3,810
Net Derivatives Fair Value	(584)	(741)
Asset Derivatives Fair Value	0	0
Liability Derivatives Fair Value	$ (584)	$ (741)

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FAIR VALUE MEASUREMENTS

6 Months Ended

Jun. 30, 2011

FAIR VALUE MEASUREMENTS

5.  FAIR VALUE MEASUREMENTS

We determine the fair values of our debt, derivative, perpetual and privately issued equity securities primarily using three pricing approaches or techniques: quoted market prices readily available from public exchange markets, a discounted cash flow (DCF) pricing model, and price quotes we obtain from outside brokers.

Our DCF pricing model incorporates an option adjusted spread and utilizes various market inputs we obtain from both active and inactive markets. The estimated fair values developed by the DCF pricing model is most sensitive to prevailing credit spreads, the level of interest rates (yields) and interest rate volatility. Prior to March 31, 2010, credit spreads were derived based on pricing data obtained from investment brokers and took into account the current yield curve, time to maturity and subordination levels for similar securities or classes of securities. Subsequent to March 31, 2010, credit spreads were derived from using a bond index to create a credit spread matrix which takes into account the current credit spread, ratings and remaining time to maturity, and subordination levels for securities that are included in the bond index. Our DCF pricing model is based on a widely used global bond index that is comprised of investments in active markets. The index provides a broad-based measure of the global fixed-income bond market. This bond index covers bonds issued by European and American issuers, which account for the majority of bonds that we hold. We validate the reliability of the DCF pricing model periodically by using the model to price investments for which there are quoted market prices from active and inactive markets or, in the alternative, are quoted by our custodian for the same or similar securities.

The pricing data and market quotes we obtain from outside sources are reviewed internally for reasonableness. If a fair value appears unreasonable, the inputs are re-examined and the value is confirmed or revised.

In recent years, on the price quotes we obtain from outside brokers, we have noted a continued reduction in the availability of pricing data from this source. As a result, we have noted that available pricing data has become more volatile. The reduction in available pricing sources coupled with the increase in price volatility has increased the degree of management judgment required in the final determination of fair values. We assess the reasonableness of the pricing data we receive by comparing it to relevant market indices and other performance measurements.

Fair Value Hierarchy

GAAP specifies a hierarchy of valuation techniques based on whether the inputs to those valuation techniques are observable or unobservable. These two types of inputs create three valuation hierarchy levels. Level 1 valuations reflect quoted market prices for identical assets or liabilities in active markets. Level 2 valuations reflect quoted market prices for similar assets or liabilities in an active market, quoted market prices for identical or similar assets or liabilities in non-active markets or model-derived valuations in which all significant valuation inputs are observable in active markets. Level 3 valuations reflect valuations in which one or more of the significant valuation inputs are not observable in an active market. The vast majority of our financial instruments subject to the classification provisions of GAAP relate to our investment securities classified as securities available for sale in our investment portfolio. We determine the fair value of our securities available for sale using several sources or techniques based on the type and nature of the investment securities.

The following tables present the fair value hierarchy levels of the Company’s assets and liabilities that are measured at fair value on a recurring basis.

	June 30, 2011
(In millions)	Level 1		Level 2		Level 3		Total
Assets:
Fixed maturities:
Government and agencies	$	19,189	$	678	$	0	$	19,867
Municipalities		0		1,025		0		1,025
Mortgage- and asset-backed securities		0		1,241		257		1,498
Public utilities		0		5,584		0		5,584
Collateralized debt obligations		0		0		4		4
Sovereign and supranational		0		2,277		0		2,277
Banks/financial institutions		0		7,518		398		7,916
Other corporate		0		14,335		0		14,335
Total fixed maturities		19,189		32,658		659		52,506
Perpetual securities:
Banks/financial institutions		0		6,746		0		6,746
Other corporate		0		357		0		357
Total perpetual securities		0		7,103		0		7,103
Equity securities		14		5		4		23
Other assets:
Interest rate swaps		0		125		0		125
Foreign currency swaps		0		150		220		370
Total other assets		0		275		220		495
Total assets	$	19,203	$	40,041	$	883	$	60,127
Liabilities:
Interest rate swaps	$	0	$	5	$	0	$	5
Foreign currency swaps		0		270		56		326
Credit default swaps		0		0		253		253
Total liabilities	$	0	$	275	$	309	$	584

	December 31, 2010
(In millions)	Level 1		Level 2		Level 3		Total
Assets:
Fixed maturities:
Government and agencies	$	16,534	$	679	$	0	$	17,213
Municipalities		0		973		0		973
Mortgage- and asset-backed securities		0		1,539		267		1,806
Public utilities		0		5,369		0		5,369
Collateralized debt obligations		0		0		5		5
Sovereign and supranational		0		1,394		0		1,394
Banks/financial institutions		0		8,047		386		8,433
Other corporate		0		13,162		0		13,162
Total fixed maturities		16,534		31,163		658		48,355
Perpetual securities:
Banks/financial institutions		0		7,169		0		7,169
Other corporate		0		343		0		343
Total perpetual securities		0		7,512		0		7,512
Equity securities		14		5		4		23
Other assets:
Interest rate swaps		0		124		0		124
Foreign currency swaps		0		151		289		440
Total other assets		0		275		289		564
Total assets	$	16,548	$	38,955	$	951	$	56,454
Liabilities:
Interest rate swaps	$	0	$	70	$	0	$	70
Foreign currency swaps		0		280		48		328
Credit default swaps		0		0		343		343
Total liabilities	$	0	$	350	$	391	$	741

Approximately 45% of our fixed income and perpetual investments classified as Level 2 are valued by obtaining quoted market prices from our investment custodian. The custodian obtains price quotes from various pricing services that estimate fair values based on observable market transactions for similar investments in active markets, market transactions for the same investments in inactive markets or other observable market data where available.

The fair value of approximately 51% of our Level 2 fixed income and perpetual investments is determined using our DCF pricing model. The significant valuation inputs to the DCF model are obtained from, or corroborated by, observable market sources from both active and inactive markets.

For the remaining Level 2 investments that are not quoted by our custodian and cannot be priced under the DCF pricing model, we obtain specific broker quotes from up to three outside securities brokers and generally use the average of the quotes to estimate the fair value of the securities.

We use derivative instruments to manage the risk associated with certain assets. However, the derivative instrument may not be classified with the same fair value hierarchy as the associated asset. Derivative instruments are reported in Level 2 of the fair value hierarchy, except CDSs and certain foreign currency swaps which are classified as Level 3.

The interest rate and certain foreign currency derivative instruments classified as Level 2 were priced by broker quotations using inputs that are observable in the market. Inputs used to value derivatives include, but are not limited to, interest rates, foreign currency forward and spot rates, and interest volatility. For derivatives associated with any of our VIEs where we are the primary beneficiary, we are not the direct counterparty to the swap contracts. As a result, the fair value measurements provided by the broker incorporate the credit risk of the collateral associated with the VIE and counterparty credit risk.

The fair value of our interest rate swap contracts associated with our variable interest rate yen-denominated debt is based on the amount we would expect to receive or pay to terminate the swaps. The prices used to determine the value of the swaps are obtained from the respective swap counterparties and take into account current interest rates, duration and credit risk.

The fixed maturities, perpetual securities and derivatives classified as Level 3 consist of securities for which there are limited or no observable valuation inputs. We estimate the fair value of these securities by obtaining broker quotes from a limited number of brokers. These brokers base their quotes on a combination of their knowledge of the current pricing environment and market conditions. We consider these inputs unobservable. The equity securities classified in Level 3 are related to investments in Japanese businesses, each of which are insignificant and in the aggregate are immaterial. Because fair values for these investments are not readily available, we carry them at their original cost. We review each of these investments periodically and, in the event we determine that any are other-than-temporarily impaired, we write them down to their estimated fair value at that time.

Historically, we have not adjusted the quotes or prices we obtain from the brokers and pricing services we use.

The following tables present the changes in our available-for-sale investments and derivatives classified as Level 3.

Three Months Ended June 30, 2011
	Fixed Maturities															Perpetual Securities		Equity Securities		Derivatives
(In millions)	Mortgage- and Asset- Backed Securities			Public Utilities		Collateralized Debt Obligations			Sovereign and Supranational		Banks/ Financial Institutions			Other Corporate		Banks/ Financial Institutions				Foreign Currency Swaps		Credit Default Swaps			Total
Balance, beginning of period	$	248		$	0	$	5		$	0	$	420		$	0	$	0	$	4	$	126	$	(338	)	$	465
Realized gains or losses included in earnings		0			0		(1	)		0		0			0		0		0		25		(43	)		(19	)
Unrealized gains or losses included in other comprehensive income		12			0		0			0		(22	)		0		0		0		13		0			3
Purchases, issuances, sales and settlements:
Purchases		0			0		0			0		0			0		0		0		0		0			0
Issuances		0			0		0			0		0			0		0		0		0		0			0
Sales		0			0		0			0		0			0		0		0		0		0			0
Settlements		(3	)		0		0			0		0			0		0		0		0		128			125
Transfers into Level 3		0			0		0			0		0			0		0		0		0		0			0
Transfers out of Level 3		0			0		0			0		0			0		0		0		0		0			0
Balance, end of period	$	257		$	0	$	4		$	0	$	398		$	0	$	0	$	4	$	164	$	(253	)	$	574
Change in unrealized gains (losses) still held(1)	$	0		$	0	$	(1	)	$	0	$	0		$	0	$	0	$	0	$	25	$	(7	)	$	17

⁽¹⁾  Represents the amount of total gains or losses for the period, included in earnings, attributable to the change in unrealized gains (losses) relating to assets classified as Level 3 that were still held at June 30, 2011

Three Months Ended June 30, 2010
	Fixed Maturities																	Perpetual Securities			Equity Securities			Derivatives
(In millions)	Mortgage- and asset- backed securities			Public utilities			Collateralized debt obligations		Sovereign and supranational			Banks/ financial institutions			Other corporate			Banks/ financial institutions						Credit default swaps			Total
Balance, beginning of period	$	63		$	488		$	4	$	298		$	1,103		$	1,253		$	1,695		$	9		$	(291	)	$	4,622
Realized gains or losses included in earnings		0			0			0		0			0			0			125			0			(66	)		59
Unrealized gains or losses included in other comprehensive income		1			0			0		0			1			1			(125	)		0			0			(122	)
Purchases, issuances, sales and settlements:
Purchases		0			0			0		0			0			0			0			0			0			0
Issuances		0			0			0		0			0			0			0			0			0			0
Sales		(1	)		(2	)		0		0			0			0			(531	)		0			0			(534	)
Settlements		0			0			0		0			0			0			0			0			0			0
Transfers into Level 3(1)		219			0			0		0			330			0			0			0			0			549
Transfers out of Level 3(2)		0			(459	)		0		(298	)		(1,082	)		(1,202	)		(1,164	)		(5	)		0			(4,210	)
Balance, end of period	$	282		$	27		$	4	$	0		$	352		$	52		$	0		$	4		$	(357	)	$	364
Change in unrealized gains (losses) still held(3)	$	0		$	0		$	0	$	0		$	0		$	0		$	0		$	0		$	(66	)	$	(66	)

⁽¹⁾  Due to a lack of visibility to observe significant inputs to price and credit downgrades of respective issuers of securities to below investment grade

⁽²⁾  A result of changing our pricing methodology to using a pricing index for estimating fair value instead of obtaining pricing of the securities from brokers or arrangers

⁽³⁾ Represents the amount of total gains or losses for the period, included in earnings, attributable to the change in unrealized gains (losses) relating to assets classified as Level 3 that were still held at June 30, 2010

Six Months Ended June 30, 2011
	Fixed Maturities														Perpetual Securities		Equity Securities		Derivatives
(In millions)	Mortgage- and Asset- Backed Securities			Public Utilities		Collateralized Debt Obligations			Sovereign and Supranational		Banks/ Financial Institutions		Other Corporate		Banks/ Financial Institutions				Foreign Currency Swaps			Credit Default Swaps			Total
Balance, beginning of period	$	267		$	0	$	5		$	0	$	386	$	0	$	0	$	4	$	241		$	(343	)	$	560
Realized gains or losses included in earnings		(6	)		0		(1	)		0		1		0		0		0		(39	)		(38	)		(83	)
Unrealized gains or losses included in other comprehensive income		2			0		0			0		11		0		0		0		(38	)		0			(25	)
Purchases, issuances, sales and settlements:
Purchases		0			0		0			0		0		0		0		0		0			0			0
Issuances		0			0		0			0		0		0		0		0		0			0			0
Sales		0			0		0			0		0		0		0		0		0			0			0
Settlements		(6	)		0		0			0		0		0		0		0		0			128			122
Transfers into Level 3		0			0		0			0		0		0		0		0		0			0			0
Transfers out of Level 3		0			0		0			0		0		0		0		0		0			0			0
Balance, end of period	$	257		$	0	$	4		$	0	$	398	$	0	$	0	$	4	$	164		$	(253	)	$	574
Change in unrealized gains (losses) still held(1)	$	(6	)	$	0	$	(1	)	$	0	$	1	$	0	$	0	$	0	$	(39	)	$	(15	)	$	(60	)

⁽¹⁾  Represents the amount of total gains or losses for the period, included in earnings, attributable to the change in unrealized gains (losses) relating to assets classified as Level 3 that were still held at June 30, 2011

Six Months Ended June 30, 2010
	Fixed Maturities																		Perpetual Securities			Equity Securities			Derivatives
(In millions)	Mortgage- and asset- backed securities			Public utilities			Collateralized debt obligations			Sovereign and supranational			Banks/ financial institutions			Other corporate			Banks/ financial institutions						Credit default swaps			Total
Balance, beginning of period	$	62		$	497		$	267		$	293		$	1,240		$	1,248		$	1,441		$	9		$	0		$	5,057
Effect of change in accounting principle (1)		0			0			(263	)		0			0			0			0			0			(312	)		(575	)
Revised balance, beginning of period		62			497			4			293			1,240			1,248			1,441			9			(312	)		4,482
Realized gains or losses included in earnings		0			0			0			0			5			0			108			0			(45	)		68
Unrealized gains or losses included in other comprehensive income		2			(9	)		0			5			34			6			51			0			0			89
Purchases, issuances, sales and settlements:
Purchases		0			0			0			0			0			0			0			0			0			0
Issuances		0			0			0			0			0			0			0			0			0			0
Sales		(1	)		(2	)		0			0			(175	)		0			(585	)		0			0			(763	)
Settlements		0			0			0			0			0			0			0			0			0			0
Transfers into Level 3(2)		219			0			0			0			330			0			149			0			0			698
Transfers out of Level 3(3)		0			(459	)		0			(298	)		(1,082	)		(1,202	)		(1,164	)		(5	)		0			(4,210	)
Balance, end of period	$	282		$	27		$	4		$	0		$	352		$	52		$	0		$	4		$	(357	)	$	364
Change in unrealized gains (losses) still held(4)	$	0		$	0		$	0		$	0		$	0		$	0		$	0		$	0		$	(45	)	$	(45	)

⁽¹⁾  Change in accounting for VIEs effective January 1, 2010. See Notes 1, 3, and 4 for additional information.

⁽²⁾  Due to a lack of visibility to observe significant inputs to price and credit downgrades of respective issuers of securities to below investment grade

⁽³⁾  A result of changing our pricing methodology to using a pricing index for estimating fair value instead of obtaining pricing of the securities from brokers or arrangers

⁽⁴⁾ Represents the amount of total gains or losses for the period, included in earnings, attributable to the change in unrealized gains (losses) relating to assets classified as Level 3 that were still held at June 30, 2010

As discussed in Notes 1 and 3, we adopted new accounting guidance on VIEs effective January 1, 2010, and as a result have consolidated certain VIE investments. Upon consolidation, the beneficial interest was derecognized and the underlying securities and derivatives were recognized. In many cases, the fair value hierarchy level differed between the original beneficial interest asset and the underlying securities that are now being recognized. In the Level 3 rollforward, we have separately disclosed the impact of consolidating these VIE investments that were previously categorized as Level 3 and now the underlying securities are Level 2. As noted in the Level 3 rollforward above, the CDSs which are separately recognized as a result of this change in accounting are reported as Level 3 investments. In addition, approximately $1.0 billion of Level 2 investments were reclassified upon the adoption of this guidance, and their underlying securities are being reported as Level 1 as of January 1, 2010.

The significant valuation inputs that are used in the valuation process for the below-investment-grade, callable RDC and private placement investments classified as Level 3 include forward exchange rates, yen swap rates, dollar swap rates, interest rate volatilities, credit spread data on specific issuers, assumed default and default recovery rates, certain probability assumptions, and call option data.

Some of these securities require the calculation of a theoretical forward exchange rate which is developed by using yen swap rates, U.S. dollar swap rates, interest rate volatilities, and spot exchange rates. The forward exchange rate is then used to convert all future dollar cash flows of the bond, where applicable, into yen cash flows. Additionally, credit spreads for the individual issuers are key valuation inputs of these securities. Finally, in pricing securities with a call option, the assumptions regarding interest rates in the U.S. and Japan are considered to be significant valuation inputs. Collectively, these valuation inputs are included to estimate the fair values of these securities at each reporting date.

In obtaining the above valuation inputs, we have determined that certain pricing assumptions and data used by our pricing sources are becoming increasingly more difficult to validate or corroborate by the market and/or appear to be internally developed rather than observed in or corroborated by the market. The use of these unobservable valuation inputs causes more subjectivity in the valuation process for these securities and consequently, causes more volatility in their estimated fair values.

Fair Value of Financial Instruments

The carrying values and estimated fair values of the Company’s financial instruments were as follows:

	June 30, 2011				December 31, 2010
(In millions)	Carrying Value		Fair Value		Carrying Value		Fair Value
Assets:
Fixed-maturity securities	$	78,669	$	78,785	$	72,570	$	72,999
Fixed-maturity securities - consolidated variable interest entities		5,745		5,703		5,869		5,825
Perpetual securities		5,559		5,559		5,974		5,974
Perpetual securities - consolidated variable interest entities		1,544		1,544		1,538		1,538
Equity securities		23		23		23		23
Interest rate, foreign currency, and credit default swaps		495		495		564		564
Liabilities:
Notes payable (excluding capitalized leases)		3,042		3,283		3,032		3,248
Interest rate, foreign currency, and credit default swaps		584		584		741		741
Obligation to Japanese policyholder protection corporation		89		89		108		108

As mentioned previously, we determine the fair values of our debt, perpetual and privately issued equity securities and our derivatives using three basic pricing approaches or techniques: quoted market prices readily available from public exchange markets, pricing models, and price quotes we obtain from outside brokers.

The fair values of notes payable with fixed interest rates were obtained from an independent financial information service. The fair value of the obligation to the Japanese policyholder protection corporation is our estimated share of the industry’s obligation calculated on a pro rata basis by projecting our percentage of the industry’s premiums and reserves and applying that percentage to the total industry obligation payable in future years.

The carrying amounts for cash and cash equivalents, receivables, accrued investment income, accounts payable, cash collateral and payables for security transactions approximated their fair values due to the short-term nature of these instruments. Consequently, such instruments are not included in the above table. The preceding table also excludes liabilities for future policy benefits and unpaid policy claims as these liabilities are not financial instruments as defined by GAAP.

DCF Sensitivity

Our DCF pricing model utilizes various market inputs we obtain from both active and inactive markets. The estimated fair values developed by the DCF pricing models are most sensitive to prevailing credit spreads, the level of interest rates (yields), and, for our callable securities, interest rate volatility. Management believes that under normal market conditions, a movement of 50 basis points (bps) in interest rates and credit spreads and 50 percent in interest rate volatility would be sufficiently reasonable stresses for these risk factors. Therefore, we selected these magnitudes of movements and provided both upward and downward movements in these key assumptions used to estimate fair values. Since the changes in fair value are relatively linear, readers of these financial statements can make their own judgments as to the movement in interest rates and the change in fair value based upon this data. The following scenarios provide a view of the sensitivity of our securities priced by our DCF pricing model.

The fair values of our available-for-sale fixed-maturity and perpetual securities valued by our DCF pricing model totaled $20.3 billion at June 30, 2011. The estimated effect of potential changes in interest rates, credit spreads and interest rate volatility on these fair values as of such date is as follows:

Interest Rates				Credit Spreads				Interest Rate Volatility
Factor change	Change in fair value   (in millions)			Factor change	Change in fair value   (in millions)			Factor change	Change in fair value   (in millions)
+50 bps		$(1,069	)	+50 bps		$(1,054	)	+50 %		$(248	)
-50 bps		1,140		-50 bps		1,122		-50 %		33

The fair values of our held-to-maturity fixed-maturity securities valued by our DCF pricing model totaled $27.2 billion at June 30, 2011. The estimated effect of potential changes in interest rates, credit spreads and interest rate volatility on these fair values as of such date is as follows:

Interest Rates				Credit Spreads				Interest Rate Volatility
Factor change	Change in fair value   (in millions)			Factor change	Change in fair value   (in millions)			Factor change	Change in fair value   (in millions)
+50 bps		$ (1,696	)	+50 bps		$(1,557	)	+50 %		$(385	)
-50 bps		1,747		-50 bps		1,572		-50 %		357

For additional information on our investments and financial instruments, see the accompanying Notes 1, 3 and 4 and Notes 1, 3 and 4 of the Notes to the Consolidated Financial Statements in our annual report to shareholders for the year ended December 31, 2010.

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended					3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011 Aflac Japan	Jun. 30, 2010 Aflac Japan	Dec. 31, 2010 Aflac Japan	Jun. 30, 2011 Aflac Japan Dollar-denominated investment portfolio	Jun. 30, 2010 Aflac Japan Dollar-denominated investment portfolio	Jun. 30, 2011 Aflac Japan Dollar-denominated investment portfolio	Jun. 30, 2010 Aflac Japan Dollar-denominated investment portfolio
Significant Accounting Policies [Line Items]
Aflac Japan's percentage of the Company's total revenues					73.00%	75.00%
Aflac Japan's percentage of the Company's total assets					87.00%		86.00%
Income tax expense (benefit) related to items of other comprehensive income (loss)	$ 292.0	$ 74.0	$ 302.0	$ 230.0				$ 112.4	$ 117.8	$ 50.4	$ 95.3
Effective income tax rate excluding income tax expense (benefit) related to Aflac Japan's dollar-denominated portfolio								36.00%	31.50%	35.70%	33.50%

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Details of Holdings of Perpetual Securities (Detail) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Investment Holdings [Line Items]
Amortized Cost	$ 58,548	$ 55,951
Fair Value	59,632	55,890
Perpetual Securities
Investment Holdings [Line Items]
Amortized Cost	7,259	7,827
Fair Value	7,103	7,512
Unrealized Gain (Loss)	(156)	(315)
Perpetual Securities | A | Upper Tier II
Investment Holdings [Line Items]
Amortized Cost	3,247	3,279
Fair Value	3,260	3,250
Unrealized Gain (Loss)	13	(29)
Perpetual Securities | A | Tier I
Investment Holdings [Line Items]
Amortized Cost	601	632
Fair Value	524	568
Unrealized Gain (Loss)	(77)	(64)
Perpetual Securities | Upper Tier II
Investment Holdings [Line Items]
Amortized Cost	4,758	5,285
Fair Value	4,789	5,091
Unrealized Gain (Loss)	31	(194)
Perpetual Securities | Upper Tier II | AA
Investment Holdings [Line Items]
Amortized Cost	192	190
Fair Value	204	201
Unrealized Gain (Loss)	12	11
Perpetual Securities | Upper Tier II | BBB
Investment Holdings [Line Items]
Amortized Cost	1,051	1,274
Fair Value	1,057	1,164
Unrealized Gain (Loss)	6	(110)
Perpetual Securities | Upper Tier II | BB or Lower
Investment Holdings [Line Items]
Amortized Cost	268	542
Fair Value	268	476
Unrealized Gain (Loss)	0	(66)
Perpetual Securities | Tier I
Investment Holdings [Line Items]
Amortized Cost	2,501	2,542
Fair Value	2,314	2,421
Unrealized Gain (Loss)	(187)	(121)
Perpetual Securities | Tier I | BBB
Investment Holdings [Line Items]
Amortized Cost	1,531	1,386
Fair Value	1,446	1,296
Unrealized Gain (Loss)	(85)	(90)
Perpetual Securities | Tier I | BB or Lower
Investment Holdings [Line Items]
Amortized Cost	369	524
Fair Value	344	557
Unrealized Gain (Loss)	$ (25)	$ 33

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Pretax Other-Than-Temporary Impairment Losses by Investment Category (Detail) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Gain (Loss) on Investments [Line Items]
Other-than-temporary impairment losses	$ 528	$ 0	$ 933	$ 42
Perpetual Securities
Gain (Loss) on Investments [Line Items]
Other-than-temporary impairment losses	184	0	184	41
Corporate Bonds
Gain (Loss) on Investments [Line Items]
Other-than-temporary impairment losses	343	0	740	0
Mortgage- and asset-backed Securities
Gain (Loss) on Investments [Line Items]
Other-than-temporary impairment losses	1	0	7	0
Municipalities
Gain (Loss) on Investments [Line Items]
Other-than-temporary impairment losses	0	0	1	0
Equity Securities
Gain (Loss) on Investments [Line Items]
Other-than-temporary impairment losses	$ 0	$ 0	$ 1	$ 1

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SHARE-BASED COMPENSATION (Tables)

6 Months Ended

Jun. 30, 2011

Stock Options Outstanding and Exercisable

The following table provides information on stock options outstanding and exercisable at June 30, 2011.

	Stock Option Shares (in thousands)	Weighted-Average   Remaining Term (in years)	Aggregate Intrinsic Value   (in millions)	Weighted-Average   Exercise Price Per Share
Outstanding	14,608	5.3	$97	$42.51
Exercisable	11,197	4.3	66	42.93

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COMMITMENTS AND CONTINGENT LIABILITIES

6 Months Ended

Jun. 30, 2011

COMMITMENTS AND CONTINGENT LIABILITIES

10.   COMMITMENTS AND CONTINGENT LIABILITIES

We are a defendant in various lawsuits considered to be in the normal course of business. Members of our senior legal and financial management teams review litigation on a quarterly and annual basis. The final results of any litigation cannot be predicted with certainty. Although some of this litigation is pending in states where large punitive damages, bearing little relation to the actual damages sustained by plaintiffs, have been awarded in recent years, we believe the outcome of pending litigation will not have a material adverse effect on our financial position, results of operations, or cash flows.

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

6 Months Ended

Jun. 30, 2011

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

1.   SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Description of Business

Aflac Incorporated (the Parent Company) and its subsidiaries (collectively, the Company) primarily sell supplemental health and life insurance in the United States and Japan. The Company’s insurance business is marketed and administered through American Family Life Assurance Company of Columbus (Aflac), which operates in the United States (Aflac U.S.) and as a branch in Japan (Aflac Japan). Most of Aflac’s policies are individually underwritten and marketed through independent agents. Aflac U.S. markets and administers group products through Continental American Insurance Company (CAIC). Our insurance operations in the United States and our branch in Japan service the two markets for our insurance business. Aflac Japan’s revenues, including realized gains and losses on its investment portfolio, accounted for 73% and 75% of the Company’s total revenues in the six-month periods ended June 30, 2011, and 2010, respectively. The percentage of the Company’s total assets attributable to Aflac Japan was 87% and 86% at June 30, 2011, and December 31, 2010, respectively.

Basis of Presentation

We prepare our financial statements in accordance with U.S. generally accepted accounting principles (GAAP). These principles are established primarily by the Financial Accounting Standards Board (FASB). In these Notes to the Consolidated Financial Statements, references to GAAP issued by the FASB are derived from the FASB Accounting Standards Codification^TM (ASC). The preparation of financial statements in conformity with GAAP requires us to make estimates when recording transactions resulting from business operations based on currently available information. The most significant items on our balance sheet that involve a greater degree of accounting estimates and actuarial determinations subject to changes in the future are the valuation of investments, deferred policy acquisition costs, liabilities for future policy benefits and unpaid policy claims, and income taxes. These accounting estimates and actuarial determinations are sensitive to market conditions, investment yields, mortality, morbidity, commission and other acquisition expenses, and terminations by policyholders. As additional information becomes available, or actual amounts are determinable, the recorded estimates will be revised and reflected in operating results. Although some variability is inherent in these estimates, we believe the amounts provided are adequate.

The unaudited consolidated financial statements include the accounts of the Parent Company, its subsidiaries and those entities required to be consolidated under applicable accounting standards. All material intercompany accounts and transactions have been eliminated.

In the opinion of management, the accompanying unaudited consolidated financial statements of the Company contain all adjustments, consisting of normal recurring accruals, which are necessary to fairly present the consolidated balance sheets as of June 30, 2011, and December 31, 2010, the consolidated statements of earnings and comprehensive income (loss) for the three- and six-month periods ended June 30, 2011, and 2010, and the consolidated statements of shareholders’ equity and cash flows for the six-month periods ended June 30, 2011, and 2010. Results of operations for interim periods are not necessarily indicative of results for the entire year. As a result, these financial statements should be read in conjunction with the financial statements and notes thereto included in our annual report to shareholders for the year ended December 31, 2010.

Significant Accounting Policies

We have refined the explanation of our accounting policies for the translation of foreign currencies and income taxes. All other categories of significant accounting policies remain unchanged from our annual report to shareholders for the year ended December 31, 2010.

Translation of Foreign Currencies: The functional currency of Aflac Japan’s insurance operations is the Japanese yen. We translate our yen-denominated financial statement accounts into U.S. dollars as follows. Assets and liabilities are translated at end-of-period exchange rates. Realized gains and losses on security transactions are translated at the exchange rate on the trade date of each transaction. Other revenues, expenses and cash flows are translated using average exchange rates for the period. The resulting currency translation adjustments are reported in accumulated other comprehensive income. We include in earnings the realized currency exchange gains and losses resulting from transactions.

Aflac Japan maintains an investment portfolio of dollar-denominated securities on behalf of Aflac U.S., which serves as an economic currency hedge of a portion of our investment in Aflac Japan. The functional currency for these investments is the U.S. dollar. The related investment income and realized/unrealized investment gains and losses are also denominated in U.S. dollars. Since the functional currency of Aflac Japan’s dollar-denominated portfolio is the U.S. dollar, there is no translation adjustment to record in other comprehensive income for these investments when the yen/dollar exchange rate changes. However, the foreign exchange gains and losses related to this portfolio are taxable in Japan and the U.S. when the securities mature or are sold. Until maturity or sale, deferred tax expense or benefit associated with the foreign exchange gains or losses are recognized in the income tax expense on other comprehensive income.

We have designated the yen-denominated Uridashi and Samurai notes and yen-denominated loans issued by the Parent Company as a hedge of our investment in Aflac Japan. Outstanding principal and related accrued interest on these items are translated into U.S. dollars at end-of-period exchange rates. Currency translation adjustments are recorded through other comprehensive income and are included in accumulated other comprehensive income.

Income Taxes: Income tax provisions are generally based on pretax earnings reported for financial statement purposes, which differ from those amounts used in preparing our income tax returns. Deferred income taxes are recognized for temporary differences between the financial reporting basis and income tax basis of assets and liabilities, based on enacted tax laws and statutory tax rates applicable to the periods in which we expect the temporary differences to reverse. We record deferred tax assets for tax positions taken based on our assessment of whether the tax position is more likely than not to be sustained upon examination by taxing authorities. A valuation allowance is established for deferred tax assets when it is more likely than not that an amount will not be realized.

As discussed in the Translation of Foreign Currencies section above, Aflac Japan maintains a dollar-denominated investment portfolio on behalf of Aflac U.S. While there are no translation effects to record in other comprehensive income, the deferred tax expense or benefit associated with foreign exchange gains or losses on the portfolio is recognized in other comprehensive income until the securities mature or are sold. Total income tax expense (benefit) related to items of other comprehensive income (loss) included a tax benefit of $112.4 million and $117.8 million during the three-month periods ended June 30, 2011 and 2010, respectively, for this dollar-denominated portfolio. Excluding these amounts from total taxes on other comprehensive income would result in an effective income tax rate on pretax other comprehensive income (loss) of 36.0% and 31.5% in the three-month periods ended June 30, 2011 and 2010, respectively. Total income tax expense (benefit) related to items of other comprehensive income (loss) included a tax benefit of $50.4 million and $95.3 million during the six-month periods ended June 30, 2011 and 2010, respectively, for this dollar-denominated portfolio. Excluding these amounts from total taxes on other comprehensive income would result in an effective income tax rate on pretax other comprehensive income (loss) of 35.7% and 33.5% in the six-month periods ended June 30, 2011 and 2010, respectively.

New Accounting Pronouncements

Recently Adopted Accounting Pronouncements

Fair value measurements and disclosures: In January 2010, the FASB issued amended accounting guidance on fair value disclosures. This guidance requires the activity in fair value hierarchy Level 3 for purchases, sales, issuances, and settlements to be reported on a gross, rather than net, basis. We adopted this guidance as of January 1, 2011. The adoption did not have an impact on our financial position or results of operations.

Accounting for variable interest entities and transfers of financial assets: In June 2009, the FASB issued amended guidance on accounting for variable interest entities (VIEs) and transfers of financial assets. As discussed above, this guidance defines new criteria for determining the primary beneficiary of a VIE; increases the frequency of required reassessments to determine whether a company is the primary beneficiary of a VIE; eliminates the exemption for the consolidation of qualified special purpose entities (QSPEs); establishes conditions for reporting a transfer of a portion of a financial asset as a sale; modifies the financial asset derecognition criteria; and requires additional disclosures. We adopted the provisions of this guidance on January 1, 2010 as a cumulative effect of change in accounting principle. We were required to consolidate certain of the VIEs with which we are currently involved. We were not required to deconsolidate any VIEs on January 1, 2010.

Upon the initial consolidation of the VIEs on January 1, 2010, the assets, liabilities, and noncontrolling interests of the VIEs were recorded at their carrying values, which is the amounts at which the assets, liabilities, and noncontrolling interests would have been carried in the consolidated financial statements when we first met the conditions to be the primary beneficiary. For any of the VIEs that were required to be consolidated, we also considered whether any of the derivatives in these structures qualified on January 1, 2010, as a cash flow hedge of the changes in cash flows attributable to foreign currency and/or interest rate risk. Certain of the swaps did not qualify for hedge accounting since the swap had a fair value on January 1, 2010. Other swaps did not qualify for hedge accounting since they increased, rather than reduced, cash flow risk.

For additional information concerning our investments in VIEs and derivatives, see Notes 3 and 4, respectively.

Accounting Pronouncements Pending Adoption

Presentation of comprehensive income: In June 2011, the FASB issued guidance to amend the presentation of comprehensive income. The amendments require that all non-owner changes in stockholders’ equity be presented either in a single continuous statement of comprehensive income or in two separate but consecutive statements. The amendment also requires reclassification adjustments for items that are reclassified from other comprehensive income to net income to be presented in the statements where the components of net income and the components of other comprehensive income are presented. This guidance is effective for interim and annual periods beginning after December 15, 2011. We do not expect the adoption of this guidance to have any impact on our financial position or results of operations.

Fair value measurements and disclosures: In May 2011, the FASB issued guidance to amend the fair value measurement and disclosure requirements. Most of the amendments are clarifications of the FASB’s intent about the application of existing fair value measurement and disclosure requirements. Other amendments change a particular principle or requirement for measuring fair value or disclosing information about fair value measurements. The new fair value measurement disclosures include additional quantitative and qualitative disclosures for Level 3 measurements, including a qualitative sensitivity analysis of fair value to changes in unobservable inputs, and categorization by fair value hierarchy level for items for which the fair value is only disclosed. This guidance is effective for interim and annual periods beginning after December 15, 2011. We are currently evaluating the impact of adopting this guidance on our financial position and results of operations.

Accounting for costs associated with acquiring or renewing insurance contracts: In October 2010, the FASB issued amended accounting guidance on accounting for costs associated with acquiring or renewing insurance contracts. Only incremental direct costs associated with the successful acquisition of a new or renewal contract may be capitalized. The amendment also prohibits capitalizing direct-response advertising costs unless they meet certain criteria. This guidance is effective for interim and annual periods beginning after December 15, 2011. We are currently evaluating the impact of adopting this guidance on our financial position and results of operations.

Recent accounting guidance not discussed above is not applicable or did not have an impact on our business.

For additional information on new accounting pronouncements and recent accounting guidance and their impact, if any, on our financial position or results of operations, see Note 1 of the Notes to the Consolidated Financial Statements in our annual report to shareholders for the year ended December 31, 2010.

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Total Investments in the Bank and Financial Institution Sector, Including those Classified as Perpetual Securities (Detail) (Banks/financial Institutions, USD $) In Millions, unless otherwise specified	Jun. 30, 2011	Dec. 31, 2010
Summary of Investment Holdings [Line Items]
Amortized Cost	$ 27,294	$ 29,540
Fair value	26,587	27,910
Percentage of Total Investment Portfolio, Amortized Cost	30.00%	35.00%
Percentage of Total Investment Portfolio, Fair Value	29.00%	32.00%
Perpetual Securities | Upper Tier II
Summary of Investment Holdings [Line Items]
Amortized Cost	4,426	4,957
Fair value	4,432	4,748
Percentage of Total Investment Portfolio, Amortized Cost	5.00%	6.00%
Percentage of Total Investment Portfolio, Fair Value	5.00%	5.00%
Perpetual Securities | Tier I
Summary of Investment Holdings [Line Items]
Amortized Cost	2,501	2,542
Fair value	2,314	2,421
Percentage of Total Investment Portfolio, Amortized Cost	3.00%	3.00%
Percentage of Total Investment Portfolio, Fair Value	2.00%	3.00%
Debt Securities
Summary of Investment Holdings [Line Items]
Amortized Cost	20,367	22,041
Fair value	$ 19,841	$ 20,741
Percentage of Total Investment Portfolio, Amortized Cost	22.00%	26.00%
Percentage of Total Investment Portfolio, Fair Value	22.00%	24.00%

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SHAREHOLDERS' EQUITY

6 Months Ended

Jun. 30, 2011

SHAREHOLDERS' EQUITY

7.   SHAREHOLDERS’ EQUITY

The following table is a reconciliation of the number of shares of the Company’s common stock for the six-month periods ended June 30.

(In thousands of shares)	2011			2010
Common stock - issued:
Balance, beginning of period		662,660			661,209
Exercise of stock options and issuance of restricted shares		752			672
Balance, end of period		663,412			661,881
Treasury stock:
Balance, beginning of period		192,999			192,641
Purchases of treasury stock:
Open market		4,100			0
Other		155			95
Dispositions of treasury stock:
Shares issued to AFL Stock Plan		(745	)		0
Exercise of stock options		(85	)		(1,535	)
Other		(79	)		(89	)
Balance, end of period		196,345			191,112
Shares outstanding, end of period		467,067			470,769

Outstanding share-based awards are excluded from the calculation of weighted-average shares used in the computation of basic earnings per share. The following table presents the approximate number of share-based awards to purchase shares, on a weighted-average basis, that were considered to be anti-dilutive and were excluded from the calculation of diluted earnings per share for the following periods.

	Three Months Ended June 30,				Six Months Ended June 30,
(In thousands)	2011		2010		2011		2010
Anti-dilutive share-based awards		4,246		4,610		3,419		3,530

Share Repurchase Program: During the first six months of 2011, we repurchased 4.1 million shares of our common stock in the open market. During the first six months of 2010, we did not repurchase any shares of our common stock.

As of June 30, 2011, a remaining balance of 26.3 million shares of our common stock was available for purchase under a share repurchase authorization by our board of directors in 2008.

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BUSINESS SEGMENT INFORMATION (Tables)

6 Months Ended

Jun. 30, 2011

Reconciliation of Revenue and Pretax Earnings from Segments to Consolidated

Information regarding operations by segment follows:

	Three Months Ended June 30,				Six Months Ended June 30,
(In millions)	2011		2010		2011		2010
Revenues:
Aflac Japan:
Earned premiums	$	3,770	$	3,186	$	7,472	$	6,393
Net investment income		636		593		1,285		1,186
Other income		5		(1)		25		26
Total Aflac Japan		4,411		3,778		8,782		7,605
Aflac U.S.:
Earned premiums		1,186		1,147		2,356		2,289
Net investment income		148		135		291		267
Other income		3		3		6		5
Total Aflac U.S.		1,337		1,285		2,653		2,561
Other business segments		13		11		28		23
Total business segment revenues		5,761		5,074		11,463		10,189
Realized investment gains (losses)		(668)		(89)		(1,247)		(135)
Corporate		60		49		121		101
Intercompany eliminations		(65)		(54)		(133)		(111)
Total revenues	$	5,088	$	4,980	$	10,204	$	10,044
	Three Months Ended June 30,				Six Months Ended June 30,
(In millions)	2011		2010		2011		2010
Pretax earnings:
Aflac Japan	$	931	$	798	$	1,911	$	1,619
Aflac U.S.		246		227		499		471
Other business segments		0		(1)		0		(2)
Total business segment pretax operating earnings		1,177		1,024		2,410		2,088
Interest expense, noninsurance operations		(41)		(31)		(82)		(63)
Corporate and eliminations		(15)		(15)		(29)		(27)
Pretax operating earnings		1,121		978		2,299		1,998
Realized investment gains (losses)		(668)		(89)		(1,247)		(135)
Total earnings before income taxes	$	453	$	889	$	1,052	$	1,863
Income taxes applicable to pretax operating earnings	$	388	$	339	$	795	$	693
Effect of foreign currency translation on operating earnings		51		12		99		33

Reconciliation of Assets from Segment to Consolidated

Assets were as follows:

(In millions)	June 30,         2011			December 31,        2010
Assets:
Aflac Japan	$	92,290		$	87,061
Aflac U.S.		13,208			13,095
Other business segments		162			155
Total business segment assets		105,660			100,311
Corporate		14,950			14,047
Intercompany eliminations		(14,378	)		(13,319	)
Total assets	$	106,232		$	101,039

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SHARE-BASED COMPENSATION

6 Months Ended

Jun. 30, 2011

SHARE-BASED COMPENSATION

8.   SHARE-BASED COMPENSATION

The Company has two long-term incentive compensation plans. The first plan, which expired in February 2007, is a stock option plan which allowed grants for incentive stock options (ISOs) to employees and non-qualifying stock options (NQSOs) to employees and non-employee directors. Options granted before the plan’s expiration date remain outstanding in accordance with their terms. The second long-term incentive plan allows awards to Company employees for ISOs, NQSOs, restricted stock, restricted stock units, and stock appreciation rights. Non-employee directors are eligible for grants of NQSOs, restricted stock, and stock appreciation rights. As of June 30, 2011, approximately 15.2 million shares were available for future grants under this plan, and the only performance-based awards issued and outstanding were restricted stock awards.

Share-based awards granted to U.S.-based grantees are settled with authorized but unissued Company stock, while those issued to Japan-based grantees are settled with treasury shares.

The following table provides information on stock options outstanding and exercisable at June 30, 2011.

	Stock Option Shares (in thousands)	Weighted-Average   Remaining Term (in years)	Aggregate Intrinsic Value   (in millions)	Weighted-Average   Exercise Price Per Share
Outstanding	14,608	5.3	$97	$42.51
Exercisable	11,197	4.3	66	42.93

We received cash from the exercise of stock options in the amount of $13.0 million during the first six months of 2011, compared with $46 million in the first six months of 2010. The tax benefit realized as a result of stock option exercises and restricted stock releases was $11.9 million in the first six months of 2011, compared with $20 million in the first six months of 2010.

As of June 30, 2011, total compensation cost not yet recognized in our financial statements related to restricted-share-based awards was $32.4 million, of which $16.4 million (688 thousand shares) was related to restricted-share-based awards with a performance-based vesting condition. We expect to recognize these amounts over a weighted-average period of approximately 1.5 years. There are no other contractual terms covering restricted stock awards once vested.

For additional information on our long-term share-based compensation plans and the types of share-based awards, see Note 11 of the Notes to the Consolidated Financial Statements included in our annual report to shareholders for the year ended December 31, 2010.

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INVESTMENTS - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2011	Mar. 31, 2011 Investment	Jun. 30, 2010 Investment	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
Schedule of Investments [Line Items]
Available-for-sale fixed maturity securities, recognized gains (losses)	$ (668)		$ (89)	$ (1,247)	$ (135)
Reclassified investments from the held-to-maturity portfolio to the available-for-sale portfolio, number of investments		8	4
Reclassified investments from the held-to-maturity portfolio to the available-for-sale portfolio, amortized cost		1,600	1,200		1,200
Reclassified investments from the held-to-maturity portfolio to the available-for-sale portfolio, aggregate unrealized gain (loss)		270	665
Perpetual securities, interest coupons that were fixed at issuance subsequently change to a floating short-term interest rate				floating short-term interest rate of 125 to more than 300 basis points above an appropriate market index
Other-than-temporary impairment losses	528		0	933	42
Realized pretax investment gains (losses) from sales and redemptions	(182)		14	(326)	(7)
Valuation allowance related to deferred tax asset associated with realized investment losses	19
Fair value of investments in an unrealized loss position	29,906			29,906		30,654
Total Unrealized Losses	2,530			2,530		3,363
Percentage that the lending policy requires that the fair value of the securities and/or unrestricted cash received as collateral be of the fair value of the loaned securities		102.00%
Fair Value Option
Schedule of Investments [Line Items]
Available-for-sale fixed maturity securities, fair value	637			637		619
Available-for-sale fixed maturity securities, recognized gains (losses)	9			12
Fair Value Option | Upper Limit
Schedule of Investments [Line Items]
Available-for-sale fixed maturity securities, recognized gains (losses)			(1)		(1)
Variable Interest Entity, Not Consolidated
Schedule of Investments [Line Items]
Amortized Cost	13,048			13,048		13,919
Fair value	13,195			13,195		13,219
Variable Interest Entity, Not Consolidated | A
Schedule of Investments [Line Items]
Number of issuers				167
Parent Company
Schedule of Investments [Line Items]
Available-for-sale fixed-maturity securities, amortized cost	111			111
Available-for-sale fixed maturity securities, fair value	119			119
Banks/financial Institutions | Alpha Bank | Investments Sold | Greece
Schedule of Investments [Line Items]
Number of investments		1
Realized pretax investment gains (losses) from sales and redemptions		(177)
Realized investment gains (losses) from sales and redemptions, after-tax		(115)
Banks/financial Institutions | EFG Eurobank Ergasias | Investments Sold | Greece
Schedule of Investments [Line Items]
Number of investments	1			1
Realized pretax investment gains (losses) from sales and redemptions	2
Banks/financial Institutions | National Bank of Greece (NBG) | Investments Sold | Greece
Schedule of Investments [Line Items]
Realized pretax investment gains (losses) from sales and redemptions	(47)
Banks/financial Institutions | Banco BPI, SA | Investments Sold | Portugal
Schedule of Investments [Line Items]
Realized pretax investment gains (losses) from sales and redemptions	(99)
Realized investment gains (losses) from sales and redemptions, after-tax	(64)
Banks/financial Institutions | Caixa Geral de Depositos SA | Impairments | Portugal
Schedule of Investments [Line Items]
Other-than-temporary impairment losses	112
Other-than-temporary impairment losses, after-tax	73
Banks/financial Institutions | Banco Espirito Santo SA | Impairments | Portugal
Schedule of Investments [Line Items]
Other-than-temporary impairment losses	163
Other-than-temporary impairment losses, after-tax	106
Perpetual Securities
Schedule of Investments [Line Items]
Available-for-sale fixed maturity securities, recognized gains (losses)	(243)		125	(239)	92
Other-than-temporary impairment losses	184		0	184	41
Fair value of investments in an unrealized loss position	3,306			3,306		4,379
Total Unrealized Losses	397			397		563
Perpetual Securities | Equity Impairment Model Losses
Schedule of Investments [Line Items]
Other-than-temporary impairment losses			0		41
Other-than-temporary impairment losses, after-tax			0		27
Perpetual Securities | Issuer Creditworthiness
Schedule of Investments [Line Items]
Other-than-temporary impairment losses	184			184
Other-than-temporary impairment losses, after-tax	120			120
Perpetual Securities | Below Investment Grade
Schedule of Investments [Line Items]
Number of issuers				4
Perpetual Securities | Investment grade
Schedule of Investments [Line Items]
Percentage of unrealized losses attributable to securities that were investment grade	93.00%			93.00%		83.00%
Perpetual Securities | Europe, excluding the United Kingdom
Schedule of Investments [Line Items]
Geographic concentration of credit risk for issuer of investments owned	70.00%			70.00%
Perpetual Securities | United Kingdom
Schedule of Investments [Line Items]
Geographic concentration of credit risk for issuer of investments owned	10.00%			10.00%
Perpetual Securities | Japan
Schedule of Investments [Line Items]
Geographic concentration of credit risk for issuer of investments owned	14.00%			14.00%
Perpetual Securities | Other Countries
Schedule of Investments [Line Items]
Geographic concentration of credit risk for issuer of investments owned	6.00%			6.00%
Banks/financial Institutions | Investments Sold | Below Investment Grade | Ireland
Schedule of Investments [Line Items]
Realized pretax investment gains (losses) from sales and redemptions	(74)	2
Realized investment gains (losses) from sales and redemptions, after-tax	(48)
Banks/financial Institutions | Below Investment Grade
Schedule of Investments [Line Items]
Fair value of investments in an unrealized loss position	800			800
Total Unrealized Losses	300			300
Number of investments				2
Percentage of unrealized losses attributable to a certain number of securities	83.00%			83.00%
Number of issuers with average unrealized losses per investment				8
Banks/financial Institutions | Below Investment Grade | Ireland
Schedule of Investments [Line Items]
Amortized Cost	248			248
Fair value	139			139
Banks/financial Institutions | Below Investment Grade | Upper Limit
Schedule of Investments [Line Items]
Issuers, average unrealized losses per investment	7			7
Mortgage- and asset-backed Securities | Investment grade
Schedule of Investments [Line Items]
Percentage of unrealized losses attributable to securities that were investment grade	70.00%			70.00%		54.00%
Banks/financial Institutions | Investment grade
Schedule of Investments [Line Items]
Percentage of unrealized losses attributable to securities that were investment grade	78.00%			78.00%		53.00%
Other Corporate | Investment grade
Schedule of Investments [Line Items]
Percentage of unrealized losses attributable to securities that were investment grade	61.00%			61.00%		51.00%
Municipalities | Investment grade
Schedule of Investments [Line Items]
Percentage of unrealized losses attributable to securities that were investment grade	71.00%			71.00%		82.00%
Investment grade | Public Utilities
Schedule of Investments [Line Items]
Percentage of unrealized losses attributable to securities that were investment grade	95.00%			95.00%		100.00%
Banks/financial Institutions
Schedule of Investments [Line Items]
Amortized Cost	27,294			27,294		29,540
Fair value	26,587			26,587		27,910
Fair value of investments in an unrealized loss position	13,900			13,900
Total Unrealized Losses	1,400			1,400
Banks/financial Institutions | Europe, excluding the United Kingdom
Schedule of Investments [Line Items]
Geographic concentration of credit risk for issuer of investments owned	43.00%			43.00%
Banks/financial Institutions | United States
Schedule of Investments [Line Items]
Geographic concentration of credit risk for issuer of investments owned	21.00%			21.00%
Banks/financial Institutions | United Kingdom
Schedule of Investments [Line Items]
Geographic concentration of credit risk for issuer of investments owned	8.00%			8.00%
Banks/financial Institutions | Japan
Schedule of Investments [Line Items]
Geographic concentration of credit risk for issuer of investments owned	8.00%			8.00%
Banks/financial Institutions | Other Countries
Schedule of Investments [Line Items]
Geographic concentration of credit risk for issuer of investments owned	20.00%			20.00%
Banks/financial Institutions | Greece
Schedule of Investments [Line Items]
Other-than-temporary impairment losses		397
Other-than-temporary impairment losses, after-tax		258
Number of investments		2
Republic of Tunisia
Schedule of Investments [Line Items]
Reclassified investments from the held-to-maturity portfolio to the available-for-sale portfolio, amortized cost		769
Portugal and Ireland
Schedule of Investments [Line Items]
Reclassified investments from the held-to-maturity portfolio to the available-for-sale portfolio, number of investments		4
Reclassified investments from the held-to-maturity portfolio to the available-for-sale portfolio, amortized cost		$ 631

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NOTES PAYABLE

6 Months Ended

Jun. 30, 2011

NOTES PAYABLE

6.  NOTES PAYABLE

A summary of notes payable follows:

(In millions)	June 30, 2011			December 31, 2010
8.50% senior notes due May 2019	$	850		$	850
6.45% senior notes due August 2040		448	(1)		448	(1)
6.90% senior notes due December 2039		396	(2)		396	(2)
3.45% senior notes due August 2015		300			300
Yen-denominated Uridashi notes:
1.52% notes due September 2011 (principal amount 15 billion yen)		186			184
2.26% notes due September 2016 (principal amount 8 billion yen)		99			98
Variable interest rate notes due September 2011 (.58% at June 2011, principal amount 20 billion yen)		248			245
Yen-denominated Samurai notes:
1.87% notes due June 2012 (principal amount 26.6 billion yen)		329			327
Yen-denominated loans:
3.60% loan due July 2015 (principal amount 10 billion yen)		124			123
3.00% loan due August 2015 (principal amount 5 billion yen)		62			61
Capitalized lease obligations payable through 2016		6			6
Total notes payable	$	3,048		$	3,038

⁽¹⁾ $450 issuance net of a $2 underwriting discount that is being amortized over the life of the notes

⁽²⁾ $400 issuance net of a $4 underwriting discount that is being amortized over the life of the notes

In July 2011, we issued three series of Samurai notes totaling 50.0 billion yen through a public debt offering. The first series, which totaled 28.7 billion yen (approximately $356 million using the June 30, 2011, exchange rate), bears interest at a fixed rate of 1.47% per annum, payable semi-annually, and has a three-year maturity. The second series, which totaled 15.8 billion yen (approximately $196 million using the June 30, 2011, exchange rate), bears interest at a fixed rate of 1.84% per annum, payable semi-annually, and has a five-year maturity. The third series, which totaled 5.5 billion yen (approximately $68 million using the June 30, 2011, exchange rate), bears interest at a variable rate of three-month yen LIBOR plus a spread, payable quarterly, and has a three-year maturity. We have entered into an interest rate swap related to the 5.5 billion yen variable interest rate notes to swap the variable interest rate to a fixed interest rate of 1.475% (see Note 4). These Samurai notes are not available to U.S. persons.

We have no restrictive financial covenants related to our notes payable. We were in compliance with all of the covenants of our notes payable at June 30, 2011. No events of default or defaults occurred during the six-month period ended June 30, 2011.

For additional information, see Notes 4 and 8 of the Notes to the Consolidated Financial Statements in our annual report to shareholders for the year ended December 31, 2010.

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FAIR VALUE MEASUREMENTS - Additional Information (Detail) (USD $)	Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2011 Fair Value, Measurements, Recurring Level 2	Dec. 31, 2009 Fair Value, Measurements, Recurring Level 2	Jun. 30, 2011 Fair Value Based on Discounted Cash Flow Pricing Model	Jun. 30, 2011 Interest Rates	Jun. 30, 2011 Credit Spreads	Jun. 30, 2011 Interest Rate Volatility
Fair Value, Measurement Inputs, Disclosure [Line Items]
Percentage of investments valued by obtaining quoted market prices from investment custodian			45.00%
Percentage of fair value of investments using DCF pricing model			51.00%
Amount of Level 2 investments that were reclassified upon the adoption of new accounting guidance				$ 1,000,000,000
Magnitude of movement						0.50%	0.50%	50.00%
Fair values of available-for-sale fixed maturity and perpetual securities valued by our DCF pricing model					20,300,000,000
Securities held to maturity, Fixed maturities, fair value	$ 31,982,000,000	$ 30,469,000,000			$ 27,200,000,000

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Consolidated Statements of Cash Flows (USD $) In Millions	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities:
Net earnings	$ 674	$ 1,217
Adjustments to reconcile net earnings to net cash provided by operating activities:
Change in receivables and advance premiums	926	423
Increase in deferred policy acquisition costs	(225)	(164)
Increase in policy liabilities	1,922	1,473
Change in income tax liabilities	(82)	181
Realized investment (gains) losses	1,247	135
Other, net	(84)	(242)
Net cash provided (used) by operating activities	4,378	3,023
Securities available for sale:
Fixed maturities sold	1,767	1,055
Fixed maturities matured or called	775	312
Perpetual securities sold	226	582
Perpetual securities matured or called	61	0
Equity securities sold	0	328
Securities held to maturity:
Fixed maturities matured or called	325	2
Securities available for sale:
Fixed maturities acquired	(4,822)	(4,606)
Equity securities acquired	0	(330)
Securities held to maturity:
Fixed maturities acquired	(3,484)	(642)
Cash received as collateral on loaned securities, net	147	134
Other, net	(29)	(11)
Net cash provided (used) by investing activities	(5,034)	(3,176)
Cash flows from financing activities:
Purchases of treasury stock	(222)	(5)
Principal payments under debt obligations	(1)	(2)
Dividends paid to shareholders	(260)	(262)
Change in investment-type contracts, net	275	191
Treasury stock reissued	26	36
Other, net	7	35
Net cash provided (used) by financing activities	(175)	(7)
Effect of exchange rate changes on cash and cash equivalents	1	21
Net change in cash and cash equivalents	(830)	(139)
Cash and cash equivalents, beginning of period	2,121	2,323
Cash and cash equivalents, end of period	1,291	2,184
Supplemental disclosures of cash flow information:
Income taxes paid	460	532
Interest paid	72	52
Impairment losses included in realized investment losses	933	42
Noncash financing activities:
Capitalized lease obligations	1	1
Treasury stock issued for:
Shareholder dividend reinvestment	21	0
Share-based compensation grants	$ 2	$ 3

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BUSINESS SEGMENT INFORMATION

6 Months Ended

Jun. 30, 2011

BUSINESS SEGMENT INFORMATION

2.   BUSINESS SEGMENT INFORMATION

The Company consists of two reportable insurance business segments: Aflac Japan and Aflac U.S., both of which sell supplemental health and life insurance. Operating business segments that are not individually reportable are included in the “Other business segments” category.

We do not allocate corporate overhead expenses to business segments. We evaluate and manage our business segments using a financial performance measure called pretax operating earnings. Our definition of operating earnings excludes the following items from net earnings on an after-tax basis: realized investment gains/losses (securities transactions, impairments, and the impact of derivative and hedging activities) and nonrecurring items. We then exclude income taxes related to operations to arrive at pretax operating earnings. Information regarding operations by segment follows:

	Three Months Ended June 30,				Six Months Ended June 30,
(In millions)	2011		2010		2011		2010
Revenues:
Aflac Japan:
Earned premiums	$	3,770	$	3,186	$	7,472	$	6,393
Net investment income		636		593		1,285		1,186
Other income		5		(1)		25		26
Total Aflac Japan		4,411		3,778		8,782		7,605
Aflac U.S.:
Earned premiums		1,186		1,147		2,356		2,289
Net investment income		148		135		291		267
Other income		3		3		6		5
Total Aflac U.S.		1,337		1,285		2,653		2,561
Other business segments		13		11		28		23
Total business segment revenues		5,761		5,074		11,463		10,189
Realized investment gains (losses)		(668)		(89)		(1,247)		(135)
Corporate		60		49		121		101
Intercompany eliminations		(65)		(54)		(133)		(111)
Total revenues	$	5,088	$	4,980	$	10,204	$	10,044
	Three Months Ended June 30,				Six Months Ended June 30,
(In millions)	2011		2010		2011		2010
Pretax earnings:
Aflac Japan	$	931	$	798	$	1,911	$	1,619
Aflac U.S.		246		227		499		471
Other business segments		0		(1)		0		(2)
Total business segment pretax operating earnings		1,177		1,024		2,410		2,088
Interest expense, noninsurance operations		(41)		(31)		(82)		(63)
Corporate and eliminations		(15)		(15)		(29)		(27)
Pretax operating earnings		1,121		978		2,299		1,998
Realized investment gains (losses)		(668)		(89)		(1,247)		(135)
Total earnings before income taxes	$	453	$	889	$	1,052	$	1,863
Income taxes applicable to pretax operating earnings	$	388	$	339	$	795	$	693
Effect of foreign currency translation on operating earnings		51		12		99		33

Assets were as follows:

(In millions)	June 30,         2011			December 31,        2010
Assets:
Aflac Japan	$	92,290		$	87,061
Aflac U.S.		13,208			13,095
Other business segments		162			155
Total business segment assets		105,660			100,311
Corporate		14,950			14,047
Intercompany eliminations		(14,378	)		(13,319	)
Total assets	$	106,232		$	101,039

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Net Effect on Shareholders' Equity of Unrealized Gains and Losses from Investment Securities (Detail) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Investments, Unrealized Loss Position [Line Items]
Unrealized gains (losses) on securities available for sale	$ 1,084	$ (61)
Unamortized unrealized gains on securities transferred to held to maturity	98	135
Deferred income taxes	(430)	(41)
Shareholders' equity, unrealized gains (losses) on investment securities	$ 752	$ 33

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Investments in Debt Securities, Perpetual Securities and Equity Securities (Parenthetical) (Detail) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Schedule of Available-for-sale Securities [Line Items]
Other-than-temporary non-credit-related losses	$ 1	$ 4

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NOTES PAYABLE - Additional Information (Detail) (Issuance of three series of Samurai notes) In Millions, unless otherwise specified	Jun. 30, 2011 Yen Denominated Variable Rate Samurai Notes Due In Three Years USD ($)	Jun. 30, 2011 Yen Denominated Variable Rate Samurai Notes Due In Three Years JPY (¥)	Jun. 30, 2011 Yen Denominated Samurai Notes JPY (¥)	Jun. 30, 2011 Yen Denominated Samurai Notes 1.47 Percent Due In Three Year USD ($)	Jun. 30, 2011 Yen Denominated Samurai Notes 1.47 Percent Due In Three Year JPY (¥)	Jun. 30, 2011 Yen Denominated Samurai Notes 1.84 Percent Due In Five Year USD ($)	Jun. 30, 2011 Yen Denominated Samurai Notes 1.84 Percent Due In Five Year JPY (¥)
Debt Instrument [Line Items]
Notes payable, principal amount	$ 68.0	¥ 5,500.0	¥ 50,000.0	$ 356.0	¥ 28,700.0	$ 196.0	¥ 15,800.0
Notes payable, fixed interest rate	1.475%	1.475%
Notes payable, fixed interest rate				1.47%	1.47%	1.84%	1.84%

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Anti-Dilutive Share-Based Awards Excluded from the Calculation of Diluted Earnings Per Share (Detail) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive share-based awards	4,246	4,610	3,419	3,530

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Fair Value Hierarchy Levels of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) (Fair Value, Measurements, Recurring, USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Assets:
Swaps	$ 495	$ 564
Total assets	60,127	56,454
Liabilities:
Total liabilities	584	741
Mortgage- and asset-backed Securities | Level 1 | Fixed Maturities
Assets:
Securities	0	0
Mortgage- and asset-backed Securities | Level 2 | Fixed Maturities
Assets:
Securities	1,241	1,539
Mortgage- and asset-backed Securities | Level 3 | Fixed Maturities
Assets:
Securities	257	267
Mortgage- and asset-backed Securities | Fixed Maturities
Assets:
Securities	1,498	1,806
Public Utilities | Level 1 | Fixed Maturities
Assets:
Securities	0	0
Public Utilities | Level 2 | Fixed Maturities
Assets:
Securities	5,584	5,369
Public Utilities | Level 3 | Fixed Maturities
Assets:
Securities	0	0
Public Utilities | Fixed Maturities
Assets:
Securities	5,584	5,369
Sovereign and Supranational | Level 1 | Fixed Maturities
Assets:
Securities	0	0
Sovereign and Supranational | Level 2 | Fixed Maturities
Assets:
Securities	2,277	1,394
Sovereign and Supranational | Level 3 | Fixed Maturities
Assets:
Securities	0	0
Sovereign and Supranational | Fixed Maturities
Assets:
Securities	2,277	1,394
Banks/financial Institutions | Level 1 | Fixed Maturities
Assets:
Securities	0	0
Banks/financial Institutions | Level 1 | Perpetual Securities
Assets:
Securities	0	0
Banks/financial Institutions | Level 2 | Fixed Maturities
Assets:
Securities	7,518	8,047
Banks/financial Institutions | Level 2 | Perpetual Securities
Assets:
Securities	6,746	7,169
Banks/financial Institutions | Level 3 | Fixed Maturities
Assets:
Securities	398	386
Banks/financial Institutions | Level 3 | Perpetual Securities
Assets:
Securities	0	0
Banks/financial Institutions | Fixed Maturities
Assets:
Securities	7,916	8,433
Banks/financial Institutions | Perpetual Securities
Assets:
Securities	6,746	7,169
Other Corporate | Level 1 | Fixed Maturities
Assets:
Securities	0	0
Other Corporate | Level 1 | Perpetual Securities
Assets:
Securities	0	0
Other Corporate | Level 2 | Fixed Maturities
Assets:
Securities	14,335	13,162
Other Corporate | Level 2 | Perpetual Securities
Assets:
Securities	357	343
Other Corporate | Level 3 | Fixed Maturities
Assets:
Securities	0	0
Other Corporate | Level 3 | Perpetual Securities
Assets:
Securities	0	0
Other Corporate | Fixed Maturities
Assets:
Securities	14,335	13,162
Other Corporate | Perpetual Securities
Assets:
Securities	357	343
Municipalities | Level 1 | Fixed Maturities
Assets:
Securities	0	0
Municipalities | Level 2 | Fixed Maturities
Assets:
Securities	1,025	973
Municipalities | Level 3 | Fixed Maturities
Assets:
Securities	0	0
Municipalities | Fixed Maturities
Assets:
Securities	1,025	973
Collateralized Debt Obligations | Level 1 | Fixed Maturities
Assets:
Securities	0	0
Collateralized Debt Obligations | Level 2 | Fixed Maturities
Assets:
Securities	0	0
Collateralized Debt Obligations | Level 3 | Fixed Maturities
Assets:
Securities	4	5
Collateralized Debt Obligations | Fixed Maturities
Assets:
Securities	4	5
Interest rate swaps
Assets:
Swaps	125	124
Liabilities:
Swaps	5	70
Interest rate swaps | Level 1
Assets:
Swaps	0	0
Liabilities:
Swaps	0	0
Interest rate swaps | Level 2
Assets:
Swaps	125	124
Liabilities:
Swaps	5	70
Interest rate swaps | Level 3
Assets:
Swaps	0	0
Liabilities:
Swaps	0	0
Foreign currency swaps
Assets:
Swaps	370	440
Liabilities:
Swaps	326	328
Foreign currency swaps | Level 1
Assets:
Swaps	0	0
Liabilities:
Swaps	0	0
Foreign currency swaps | Level 2
Assets:
Swaps	150	151
Liabilities:
Swaps	270	280
Foreign currency swaps | Level 3
Assets:
Swaps	220	289
Liabilities:
Swaps	56	48
Credit default swaps
Liabilities:
Swaps	253	343
Credit default swaps | Level 1
Liabilities:
Swaps	0	0
Credit default swaps | Level 2
Liabilities:
Swaps	0	0
Credit default swaps | Level 3
Liabilities:
Swaps	253	343
Level 1
Assets:
Swaps	0	0
Total assets	19,203	16,548
Liabilities:
Total liabilities	0	0
Level 1 | Fixed Maturities
Assets:
Securities	19,189	16,534
Level 1 | Fixed Maturities | Government and Agencies Debt Securities
Assets:
Securities	19,189	16,534
Level 1 | Perpetual Securities
Assets:
Securities	0	0
Level 1 | Equity Securities
Assets:
Securities	14	14
Level 2
Assets:
Swaps	275	275
Total assets	40,041	38,955
Liabilities:
Total liabilities	275	350
Level 2 | Fixed Maturities
Assets:
Securities	32,658	31,163
Level 2 | Fixed Maturities | Government and Agencies Debt Securities
Assets:
Securities	678	679
Level 2 | Perpetual Securities
Assets:
Securities	7,103	7,512
Level 2 | Equity Securities
Assets:
Securities	5	5
Level 3
Assets:
Swaps	220	289
Total assets	883	951
Liabilities:
Total liabilities	309	391
Level 3 | Fixed Maturities
Assets:
Securities	659	658
Level 3 | Fixed Maturities | Government and Agencies Debt Securities
Assets:
Securities	0	0
Level 3 | Perpetual Securities
Assets:
Securities	0	0
Level 3 | Equity Securities
Assets:
Securities	4	4
Fixed Maturities
Assets:
Securities	52,506	48,355
Fixed Maturities | Government and Agencies Debt Securities
Assets:
Securities	19,867	17,213
Perpetual Securities
Assets:
Securities	7,103	7,512
Equity Securities
Assets:
Securities	$ 23	$ 23

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Components of Retirement Expense for the Japanese and U.S. Pension Plans (Detail) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Japanese Pension Plan
Components of net periodic benefit cost:
Service cost	$ 4	$ 4	$ 8	$ 7
Interest cost	2	1	3	2
Expected return on plan assets	(1)	0	(2)	(1)
Amortization of net actuarial loss	1	0	2	1
Net periodic benefit cost	6	5	11	9
U.S. Pension Plan
Components of net periodic benefit cost:
Service cost	3	3	7	6
Interest cost	4	4	8	7
Expected return on plan assets	(3)	(3)	(7)	(6)
Amortization of net actuarial loss	2	1	3	2
Net periodic benefit cost	$ 6	$ 5	$ 11	$ 9

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INVESTMENTS

6 Months Ended

Jun. 30, 2011

INVESTMENTS

3.   INVESTMENTS

Investment Holdings

The amortized cost for our investments in debt and perpetual securities, the cost for equity securities and the fair values of these investments are shown in the following tables.

	June 30, 2011
(In millions)	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair   Value
Securities available for sale,   carried at fair value:
Fixed maturities:
Yen-denominated:
Japan government and agencies	$	17,436	$	556	$	12	$	17,980
Mortgage- and asset-backed securities		923		32		5		950
Public utilities		2,575		71		117		2,529
Sovereign and supranational		1,721		119		19		1,821
Banks/financial institutions		4,766		134		410		4,490
Other corporate		5,860		154		485		5,529
Total yen-denominated		33,281		1,066		1,048		33,299
Dollar-denominated:
U.S. government and agencies		1,816		71		0		1,887
Municipalities		1,027		19		21		1,025
Mortgage- and asset-backed securities(1)		451		98		1		548
Collateralized debt obligations		4		0		0		4
Public utilities		2,824		266		35		3,055
Sovereign and supranational		392		67		3		456
Banks/financial institutions		3,298		180		52		3,426
Other corporate		8,175		700		69		8,806
Total dollar-denominated		17,987		1,401		181		19,207
Total fixed maturities		51,268		2,467		1,229		52,506
Perpetual securities:
Yen-denominated:
Banks/financial institutions		6,570		200		374		6,396
Other corporate		332		25		0		357
Dollar-denominated:
Banks/financial institutions		357		16		23		350
Total perpetual securities		7,259		241		397		7,103
Equity securities		21		4		2		23
Total securities available for sale	$	58,548	$	2,712	$	1,628	$	59,632

⁽¹⁾ Includes less than $1 million of other-than-temporary non-credit-related losses

	June 30, 2011
(In millions)	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair   Value
Securities held to maturity,   carried at amortized cost:
Fixed maturities:
Yen-denominated:
Japan government and agencies	$	3,216	$	70	$	4	$	3,282
Municipalities		535		19		4		550
Mortgage- and asset-backed securities		136		4		0		140
Public utilities		6,396		260		127		6,529
Sovereign and supranational		4,173		198		89		4,282
Banks/financial institutions		12,303		211		589		11,925
Other corporate		5,149		214		89		5,274
Total yen-denominated		31,908		976		902		31,982
Total securities held to maturity	$	31,908	$	976	$	902	$	31,982

	December 31, 2010
(In millions)	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair   Value
Securities available for sale,   carried at fair value:
Fixed maturities:
Yen-denominated:
Japan government and agencies	$	16,607	$	584	$	14	$	17,177
Mortgage- and asset-backed securities		1,224		35		15		1,244
Public utilities		2,554		117		80		2,591
Sovereign and supranational		903		47		12		938
Banks/financial institutions		5,927		152		1,177		4,902
Other corporate		5,733		136		457		5,412
Total yen-denominated		32,948		1,071		1,755		32,264
Dollar-denominated:
U.S. government and agencies		32		4		0		36
Municipalities		1,006		9		42		973
Mortgage- and asset-backed securities(1)		485		90		13		562
Collateralized debt obligations		5		0		0		5
Public utilities		2,568		246		36		2,778
Sovereign and supranational		395		63		2		456
Banks/financial institutions		3,496		143		108		3,531
Other corporate		7,167		662		79		7,750
Total dollar-denominated		15,154		1,217		280		16,091
Total fixed maturities		48,102		2,288		2,035		48,355
Perpetual securities:
Yen-denominated:
Banks/financial institutions		7,080		172		533		6,719
Other corporate		328		15		0		343
Dollar-denominated:
Banks/financial institutions		419		61		30		450
Total perpetual securities		7,827		248		563		7,512
Equity securities		22		3		2		23
Total securities available for sale	$	55,951	$	2,539	$	2,600	$	55,890

⁽¹⁾  Includes $4 of other-than-temporary non-credit-related losses

	December 31, 2010
(In millions)	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Securities held to maturity,   carried at amortized cost:
Fixed maturities:
Yen-denominated:
Japan government and agencies	$	344	$	4	$	4	$	344
Municipalities		407		18		2		423
Mortgage- and asset-backed securities		146		5		0		151
Public utilities		6,339		326		120		6,545
Sovereign and supranational		4,951		305		65		5,191
Banks/financial institutions		12,618		216		526		12,308
Other corporate		5,279		274		46		5,507
Total yen-denominated		30,084		1,148		763		30,469
Total securities held to maturity	$	30,084	$	1,148	$	763	$	30,469

The methods of determining the fair values of our investments in debt securities, perpetual securities and equity securities are described in Note 5.

Included in the available-for-sale fixed maturities portfolio are securities with embedded derivatives for which we have elected the fair value option. These securities were recorded at a fair value of $637 million at June 30, 2011, compared with $619 million at December 31, 2010. We recognized in earnings investment gains of $9 million and $12 million during the three- and six-month periods ended June 30, 2011, respectively, compared with less than $1 million of losses during the three- and six-month periods ended June 30, 2010, for the changes in fair value of these securities, which excludes the effects of foreign currency translation and additional fair value option elections.

During the second quarter of 2011, we did not reclassify any investments from the held-to-maturity portfolio to the available-for-sale portfolio. During the first quarter of 2011, we reclassified eight investments from the held-to-maturity portfolio to the available-for-sale portfolio as a result of significant declines in the issuers’ credit worthiness. At the time of the transfer, the securities had an aggregate amortized cost of $1.6 billion and an aggregate unrealized loss of $270 million. The securities transferred in the first quarter of 2011 included our investments in the Republic of Tunisia that had an aggregate amortized cost of $769 million and four securities associated with financial institutions in Portugal and Ireland with an aggregate amortized cost of $631 million. See the Investment Concentration section below for a discussion of these financial institutions in Portugal and Ireland.

During the second quarter of 2010, we reclassified four investments from the held-to-maturity portfolio to the available-for-sale portfolio as a result of significant downgrades of the issuers’ credit rating. At the time of transfer, the securities had an aggregate amortized cost of $1.2 billion and an aggregate unrealized loss of $665 million. We did not reclassify any investments from the held-to-maturity portfolio to the available-for-sale portfolio during the first quarter of 2010.

Contractual and Economic Maturities

The contractual maturities of our investments in fixed maturities at June 30, 2011, were as follows:

	Aflac Japan				Aflac U.S.
(In millions)	Amortized Cost		Fair Value		Amortized Cost		Fair   Value
Available for sale:
Due in one year or less	$	1,515	$	1,558	$	56	$	57
Due after one year through five years		3,755		3,964		255		287
Due after five years through 10 years		3,697		3,951		936		1,076
Due after 10 years		32,370		32,378		7,199		7,619
Mortgage- and asset-backed securities		1,327		1,441		47		56
Total fixed maturities available for sale	$	42,664	$	43,292	$	8,493	$	9,095
Held to maturity:
Due in one year or less	$	714	$	724	$	0	$	0
Due after one year through five years		1,172		1,265		0		0
Due after five years through 10 years		3,103		3,439		0		0
Due after 10 years		26,782		26,413		0		0
Mortgage- and asset-backed securities		137		141		0		0
Total fixed maturities held to maturity	$	31,908	$	31,982	$	0	$	0

At June 30, 2011, the Parent Company had a portfolio of investment-grade available-for-sale fixed-maturity securities totaling $111 million at amortized cost and $119 million at fair value, which is not included in the table above.

Expected maturities may differ from contractual maturities because some issuers have the right to call or prepay obligations with or without call or prepayment penalties.

The majority of our perpetual securities are subordinated to other debt obligations of the issuer, but rank higher than the issuer’s equity securities. Perpetual securities have characteristics of both debt and equity investments, along with unique features that create economic maturity dates for the securities. Although perpetual securities have no contractual maturity date, they have stated interest coupons that were fixed at their issuance and subsequently change to a floating short-term interest rate of 125 to more than 300 basis points above an appropriate market index, generally by the 25^th year after issuance, thereby creating an economic maturity date. The economic maturities of our investments in perpetual securities, which were all reported as available for sale at June 30, 2011, were as follows:

	Aflac Japan				Aflac U.S.
(In millions)	Amortized Cost		Fair Value		Amortized Cost		Fair   Value
Due in one year or less	$	435	$	497	$	0	$	0
Due after one year through five years		1,498		1,555		5		5
Due after five years through 10 years		838		881		0		0
Due after 10 years		4,311		3,992		172		173
Total perpetual securities available for sale	$	7,082	$	6,925	$	177	$	178

Investment Concentrations

Our investment discipline begins with a top-down approach for each investment opportunity we consider. Consistent with that approach, we first approve each country in which we invest. In our approach to sovereign analysis, we consider the political, legal and financial context of the sovereign entity in which an issuer is domiciled and operates. Next we approve the issuer’s industry sector, including such factors as the stability of results and the importance of the sector to the overall economy. Specific credit names within approved countries and industry sectors are evaluated for their market position and specific strengths and potential weaknesses. Structures in which we invest are chosen for specific portfolio management purposes, including asset/liability management, portfolio diversification and net investment income.

Banks and Financial Institutions

Our largest investment industry sector concentration is banks and financial institutions. Within the countries we approve for investment opportunities, we primarily invest in financial institutions that are strategically crucial to each approved country’s economy. The bank and financial institution sector is a highly regulated industry and plays a strategic role in the global economy. We achieve some degree of diversification in the bank and financial institution sector through a geographically diverse universe of credit exposures. Within this sector, the more significant concentration of our credit risk by geographic region or country of issuer at June 30, 2011, based on amortized cost, was: Europe, excluding the United Kingdom (43%); United States (21%); United Kingdom (8%); Japan (8%); and other (20%).

Our total investments in the bank and financial institution sector, including those classified as perpetual securities, were as follows:

	June 30, 2011			December 31, 2010
	Total Investments in Banks and Financial Institutions Sector (in millions)		Percentage of Total Investment Portfolio	Total Investments in Banks and Financial Institutions Sector (in millions)		Percentage of Total Investment     Portfolio
Debt Securities:
Amortized cost	$	20,367	22  %	$	22,041	26  %
Fair value		19,841	22		20,741	24
Perpetual Securities:
Upper Tier II:
Amortized cost	$	4,426	5  %	$	4,957	6  %
Fair value		4,432	5		4,748	5
Tier I:
Amortized cost		2,501	3		2,542	3
Fair value		2,314	2		2,421	3
Total:
Amortized cost	$	27,294	30  %	$	29,540	35  %
Fair value		26,587	29		27,910	32

Investments in Greece, Ireland, Italy, Portugal and Spain

Our investment exposure to sovereign debt and financial institutions in Greece, Ireland, Italy, Portugal and Spain was as follows:

	June 30, 2011					December 31, 2010
(In millions)	Amortized Cost			Fair    Value		Amortized Cost			Fair    Value
Sovereign and supranational:
Italy	$	310		$	304	$	307		$	306
Spain		737			768		730			782
Total	$	1,047		$	1,072	$	1,037		$	1,088
Banks and financial institutions:
Greece	$	0		$	0	$	1,152		$	391
Ireland		525			379		710			659
Italy		186			182		184			183
Portugal		282			282		859			770
Spain		531			499		526			503
Total	$	1,524	(1)	$	1,342	$	3,431	(1)	$	2,506

⁽¹⁾  Represents 6% in 2011 and 12% in 2010 of total investments in the banks and financial institutions sector, and 1% in 2011 and 4% in 2010 of total investments in debt and perpetual securities

Ireland

During the second quarter of 2011, we sold our holdings in Irish Life and Permanent PLC, which were below-investment-grade perpetual securities that had previously been impaired, at a pretax loss of $74 million ($48 million after-tax). This followed the sale of another of our impaired below-investment-grade Irish financial institution securities in the first quarter of 2011 at a $2 million pretax gain. As of June 30, 2011, senior securities included in the table above issued by an Irish financial institution with amortized cost and fair value totaling $248 million and $139 million, respectively, were rated below investment grade. We believe that these unrealized losses are linked more to Ireland’s systemic problems rather than issuer-specific credit factors. The Irish government has stated that it does not support burden-sharing for senior debt holdings such as ours. This Irish bank is current on its obligation to us, and we believe it has the ability to meet its obligations to us. In addition, as of June 30, 2011, we had the intent to hold this investment to recovery in value. As a result, we did not recognize an other-than-temporary impairment for this investment as of June 30, 2011.

Greece

During the second quarter of 2010, our investments in Greek financial institutions, Alpha Bank, EFG Eurobank Ergasias, and National Bank of Greece (NBG), all of which were Lower Tier II subordinated debt, were downgraded to below investment grade. As a result of the downgrades, we reclassified these investments from held to maturity to available for sale. At that time, we believed the downgrade of the Greek banks was largely related to the problems of the Greek government and its poor fiscal management, rather than the banks’ specific credit profiles. The three Greek bank issuers that comprised our Greek financial institution holdings had, on average, Tier I capital ratios higher than their peers in other troubled European sovereigns. Their capital was at a level that we felt could sustain deterioration in assets and operations that accompany economic conditions, such as those that the Greek economy was encountering in 2010 and those expected in the next few years. All three Greek banks had sufficient capital under the stress testing applied by the Committee of European Banking Supervisors (CEBS) in July 2010. However, the problems of the Greek government and related ratings downgrades have caused a decline in the confidence of depositors and capital market participants in the Greek banking system. As a result, the banks have significantly relied upon the European Central Bank (ECB) for liquidity via posting of collateral, which tends to be in the form of Greek Government Bonds (GGBs) or debt guaranteed by the sovereign. As of December 31, 2010, all of the Greek banks were current on their obligations to us. While these financial institutions have significant investments in GGBs, as of December 31, 2010, we believed that these institutions would be solvent even if there were a future restructuring of GGBs and they would have the ability to meet their obligations to us. In addition, as of December 31, 2010, we had the intent to hold these investments to recovery in value. As a result, we did not recognize an other-than-temporary impairment for these investments as of December 31, 2010.

Subsequent to December 31, 2010, Greece remained under pressure, which has also continued to weigh on the Greek banks. Skepticism over the rigor of the capital stress tests applied by the CEBS in July 2010 grew, especially as further problems have developed in the capital of the Irish banks. On February 18, 2011, NBG announced its proposal for a “friendly merger” with Alpha Bank, but Alpha Bank rejected this proposal. However, this proposal highlighted risks that accompany consolidation among the top three banks in Greece. While the proposal could have created a national champion in Greek banking, it also would have concentrated ownership of GGBs in the combined entity and formed a very low-rated entity among our top ten largest investment holdings. Two rating agencies downgraded the Greek banks subsequent to downgrading the sovereign during the first quarter of 2011 (on January 17, 2011, and March 9, 2011). In the latter action, the rating agency lowered the ratings indicative of the banks’ intrinsic financial strength due to the persistent pressure on liquidity, asset quality and material exposure to GGBs. In light of the above increased risks and, in particular, the March 9, 2011 downgrade, we no longer supported our previous intent to hold our Greek bank investments to recovery in value. In March 2011, we sold our investment in Alpha Bank and recognized an investment loss of $177 million ($115 million after-tax). In the first quarter of 2011, we recognized other-than-temporary impairment losses of $397 million ($258 million after-tax) for the remaining two Greek bank holdings. In the second quarter of 2011, we sold our investment in EFG Eurobank Ergasias for $2 million more than its recorded impaired value, and we sold our remaining Greek bank investment, NBG, for $47 million less than its recorded impaired value.

Portugal

As of December 31, 2010 and the end of first quarter 2011, the issuers of our Portuguese bank and financial investments, Banco BPI S.A., Caixa Geral de Depositos S.A., and Banco Espirito Santo S.A., were current on their obligations to us, were profitable and had adequate Tier I capital ratios. During the first quarter of 2011, these investments were downgraded to below-investment-grade. However, at that time we believed that these ratings and the unrealized loss position of the investments were the result of the fiscal problems in the Eurozone region rather than the banks’ specific credit profiles. We believed that Portugal’s financial institutions were stronger than their other Eurozone peers and had not required much state support. It was challenging to separate the difficulties of the sovereign from the banks since the banks’ sources of liquidity are limited due to the financial situation of the sovereign. We believed the government of Portugal had exercised more prudent fiscal policies and was in a better financial situation than some of its other Eurozone peers. However, on May 16, 2011 when the European Union officially announced a fiscal support package for Portugal, there was an increase in risk that Portugal could experience a stressed economic environment similar to that experienced in Greece and Ireland. We believed the terms of this fiscal support package could result in liquidity constraints on the banks and there could be a need for the banks to improve their liquidity and core capital. Such a situation could negatively impact our Lower Tier II securities and our ability to recover full principal and interest. Due to the reasonably possible risk that our Portuguese bank holdings could suffer further negative declines, we no longer supported our previous intent to hold our Portuguese bank investments to recovery in value and concluded that we would take steps to reduce our exposure in the region. In the second quarter of 2011, we sold our investment in Banco BPI, S.A. at a loss of $99 million ($64 million after-tax), and we recognized other-than-temporary impairment losses of $112 million ($73 million after-tax) and $163 million ($106 million after-tax) on our investments in Caixa Geral de Depositos S.A. and Banco Espirito Santo S.A., respectively.

With the exception of the securities discussed above, all other securities included in the table above were rated investment grade as of June 30, 2011.

Derisking

During the three- and six-month periods ended June 30, 2011, we pursued strategic investment activities to lower the risk profile of our investment portfolio. Our primary focus was on reducing our exposure to peripheral Eurozone investments (discussed in the preceding section), certain perpetual securities, and investments in certain banks or financial institutions. As a result of these derisking activities, we have no direct investment exposure in Greece, only senior indebtedness in Ireland, and materially lower exposure to Portuguese investments. Additional derisking activities have resulted in a reduction in exposure to some of our largest concentrated investment positions. See further details in the Realized Investment Gains and Losses section below.

Realized Investment Gains and Losses

Information regarding pretax realized gains and losses from investments is as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
(In millions)	2011			2010			2011			2010
Realized investment gains (losses) on securities:
Debt securities:
Available for sale:
Gross gains from sales	$	10		$	0		$	36		$	51
Gross losses from sales		(132	)		(110	)		(319	)		(190	)
Net gains (losses) from redemptions		(1	)		1			6			1
Other-than-temporary impairment losses		(344	)		0			(748	)		0
Total debt securities		(467	)		(109	)		(1,025	)		(138	)
Perpetual securities:
Available for sale:
Gross gains from sales		48			125			54			133
Gross losses from sales		(107	)		0			(109	)		0
Other-than-temporary impairment losses		(184	)		0			(184	)		(41	)
Total perpetual securities		(243	)		125			(239	)		92
Equity securities:
Gross losses from sales		0			(2	)		0			(2	)
Other-than-temporary impairment losses		0			0			(1	)		(1	)
Total equity securities		0			(2	)		(1	)		(3	)
Other assets:
Derivative gains (losses)		(25	)		(103	)		(55	)		(86	)
Other		67			0			73			0
Total other assets		42			(103	)		18			(86	)
Total realized investment gains (losses)	$	(668	)	$	(89	)	$	(1,247	)	$	(135	)

During the three- and six-month periods ended June 30, 2011, net investment losses from the sales of securities and recognized impairments were primarily a result of an implemented plan to reduce the risk exposure in our investment portfolio coupled with the continued decline in the credit worthiness of issuers of certain investments. See the Investment Concentrations section above for more information. A valuation allowance of $19 million was recorded in the second quarter of 2011 related to the deferred tax assets associated with our realized investment losses.

During the three- and six-month periods ended June 30, 2010, net investment losses from securities sold or redeemed occurred in the normal course of business.

Other-than-temporary Impairment

The fair value of our debt and perpetual security investments fluctuates based on changes in credit spreads in the global financial markets. Credit spreads are most impacted by market rates of interest, the general and specific credit environment and global market liquidity. We believe that fluctuations in the fair value of our investment securities related to changes in credit spreads have little bearing on whether our investment is ultimately recoverable. Generally, we consider such declines in fair value to be temporary even in situations where an investment remains in an unrealized loss position for a year or more.

However, in the course of our credit review process, we may determine that it is unlikely that we will recover our investment in an issuer due to factors specific to an individual issuer, as opposed to general changes in global credit spreads. In this event, we consider such a decline in the investment’s fair value, to the extent below the investment’s cost or amortized cost, to be an other-than-temporary impairment of the investment and write the investment down to its fair value. The determination of whether an impairment is other than temporary is subjective and involves the consideration of various factors and circumstances, which includes but is not limited to the following:

— issuer financial condition, including profitability and cash flows

— credit status of the issuer

— the issuer’s specific and general competitive environment

— published reports

— general economic environment

— regulatory, legislative and political environment

— the severity of the decline in fair value

— the length of time the fair value is below cost

— other factors as may become available from time to time

In addition to the usual investment risk associated with a debt instrument, our perpetual security holdings may be subject to the risk of nationalization of their issuers in connection with capital injections from an issuer’s sovereign government. We cannot be assured that such capital support will extend to all levels of an issuer’s capital structure. In addition, certain governments or regulators may consider imposing interest and principal payment restrictions on issuers of hybrid securities to preserve cash and build capital. In addition to the cash flow impact that additional deferrals would have on our portfolio, such deferrals could result in ratings downgrades of the affected securities, which in turn could impair the fair value of the securities and increase our regulatory capital requirements. We take factors such as these into account in our credit review process.

Another factor we consider in determining whether an impairment is other than temporary is an evaluation of our intent or requirement to sell the security prior to recovery of its amortized cost. We perform ongoing analyses of our liquidity needs, which includes cash flow testing of our policy liabilities, debt maturities, projected dividend payments and other cash flow and liquidity needs. Our cash flow testing includes extensive duration matching of our investment portfolio and policy liabilities. Based on our analyses, we have concluded that we have sufficient excess cash flows to meet our liquidity needs without liquidating any of our investments prior to their maturity. In addition, provided that our credit review process results in a conclusion that we will collect all of our cash flows and recover our investment in an issuer and the investment is within our target investment risk exposure limits, we generally do not sell investments prior to their maturity.

The majority of our investments are evaluated for other-than-temporary impairment using our debt impairment model. Our debt impairment model focuses on the ultimate collection of the cash flows from our investments. Our investments in perpetual securities that are rated below investment grade are evaluated for other-than-temporary impairment under our equity impairment model. Our equity impairment model focuses on the severity of a security’s decline in fair value coupled with the length of time the fair value of the security has been below amortized cost.

The following table details our pretax other-than-temporary impairment losses by investment category.

	Three Months Ended June 30,				Six Months Ended June 30,
(In millions)	2011		2010		2011		2010
Perpetual securities	$	184	$	0	$	184	$	41
Corporate bonds		343		0		740		0
Mortgage- and asset-backed securities		1		0		7		0
Municipalities		0		0		1		0
Equity securities		0		0		1		1
Total other-than-temporary impairment losses realized	$	528	$	0	$	933	$	42

We apply the debt security impairment model to our perpetual securities provided there has been no evidence of deterioration in credit of the issuer, such as a downgrade of the rating of a perpetual security to below investment grade. Subsequent to our initial investment, the perpetual securities of four issuers we own had been downgraded to below investment grade as of June 30, 2011. As a result of these downgrades, we were required to evaluate these securities for other-than-temporary impairment using the equity security impairment model rather than the debt security impairment model. Use of the equity security model limits the forecasted recovery period that can be used in the impairment evaluation and, accordingly, affects both the recognition and measurement of other-than-temporary impairment losses. We did not recognize any other-than-temporary impairment losses for perpetual securities from evaluation under our equity impairment model during the three- and six-month periods ended June 30, 2011. However, we recognized an other-than-temporary impairment loss of $184 million ($120 million after-tax) on perpetual securities during the three- and six-month periods ended June 30, 2011 due to further deterioration in the issuer’s creditworthiness. We recognized other-than-temporary impairment losses for perpetual securities from evaluation under our equity impairment model of $41 million ($27 million after-tax) during the six-month period ended June 30, 2010, however none of those impairment losses were recognized in the three-month period ended June 30, 2010.

Certain of our mortgage- and asset-backed securities had other-than-temporary impairments recognized prior to 2010 that had credit-related and non-credit-related components. The following table summarizes cumulative credit-related impairment losses on the securities still held at the end of the reporting period, for which other-than-temporary losses have been recognized and only the amount related to credit loss was recognized in earnings.

	Three Months Ended June 30,				Six Months Ended June 30,
(In millions)	2011		2010		2011		2010
Cumulative credit loss impairments, beginning of period	$	4	$	23	$	13	$	24
Securities sold during period		0		(10)		(9)		(11)
Cumulative credit loss impairments, end of period	$	4	$	13	$	4	$	13

Unrealized Investment Gains and Losses

Effect on Shareholders’ Equity

The net effect on shareholders’ equity of unrealized gains and losses from investment securities was as follows:

(In millions)	June 30, 2011			December 31, 2010
Unrealized gains (losses) on securities available for sale	$	1,084		$	(61)
Unamortized unrealized gains on securities transferred to held to maturity		98			135
Deferred income taxes		(430	)		(41)
Shareholders’ equity, unrealized gains (losses) on investment securities	$	752		$	33

Gross Unrealized Loss Aging

The following tables show the fair value and gross unrealized losses, including the portion of other-than-temporary impairment recognized in accumulated other comprehensive income, of our available-for-sale and held-to-maturity investments, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position.

	June 30, 2011
	Total				Less than 12 months				12 months or longer
(In millions)	Fair     Value		Unrealized Losses		Fair     Value		Unrealized Losses		Fair     Value		Unrealized   Losses
Fixed maturities:
Japan government and agencies:
Yen-denominated	$	1,590	$	16	$	1,590	$	16	$	0	$	0
Municipalities:
Dollar-denominated		405		21		365		9		40		12
Yen-denominated		58		4		0		0		58		4
Mortgage- and asset- backed securities:
Dollar-denominated		20		1		5		0		15		1
Yen-denominated		154		5		12		1		142		4
Public utilities:
Dollar-denominated		636		35		585		28		51		7
Yen-denominated		4,340		244		1,886		42		2,454		202
Sovereign and supranational:
Dollar-denominated		62		3		29		1		33		2
Yen-denominated		2,115		108		968		16		1,147		92
Banks/financial institutions:
Dollar-denominated		1,074		52		535		15		539		37
Yen-denominated		9,517		999		1,111		29		8,406		970
Other corporate:
Dollar-denominated		1,882		69		1,512		43		370		26
Yen-denominated		4,739		574		1,248		53		3,491		521
Total fixed maturities		26,592		2,131		9,846		253		16,746		1,878
Perpetual securities:
Dollar-denominated		210		23		117		3		93		20
Yen-denominated		3,096		374		482		21		2,614		353
Total perpetual securities		3,306		397		599		24		2,707		373
Equity securities		8		2		6		1		2		1
Total	$	29,906	$	2,530	$	10,451	$	278	$	19,455	$	2,252

	December 31, 2010
	Total				Less than 12 months				12 months or longer
(In millions)	Fair     Value		Unrealized Losses		Fair     Value		Unrealized Losses		Fair     Value		Unrealized   Losses
Fixed maturities:
Japan government and agencies:
Yen-denominated	$	1,634	$	18	$	1,634	$	18	$	0	$	0
Municipalities:
Dollar-denominated		682		42		632		28		50		14
Yen-denominated		59		2		0		0		59		2
Mortgage- and asset- backed securities:
Dollar-denominated		78		13		20		0		58		13
Yen-denominated		415		15		415		15		0		0
Public utilities:
Dollar-denominated		556		36		498		28		58		8
Yen-denominated		2,877		200		766		47		2,111		153
Sovereign and supranational:
Dollar-denominated		45		2		12		0		33		2
Yen-denominated		1,579		77		428		1		1,151		76
Banks/financial institutions:
Dollar-denominated		1,484		108		753		22		731		86
Yen-denominated		10,609		1,703		1,506		40		9,103		1,663
Other corporate:
Dollar-denominated		1,741		79		1,456		52		285		27
Yen-denominated		4,503		503		507		45		3,996		458
Total fixed maturities		26,262		2,798		8,627		296		17,635		2,502
Perpetual securities:
Dollar-denominated		208		30		149		19		59		11
Yen-denominated		4,171		533		1,793		119		2,378		414
Total perpetual securities		4,379		563		1,942		138		2,437		425
Equity securities		13		2		13		1		0		1
Total	$	30,654	$	3,363	$	10,582	$	435	$	20,072	$	2,928

Analysis of Securities in Unrealized Loss Positions

The unrealized losses on our investments have been primarily related to changes in interest rates, foreign exchange rates or the widening of credit spreads rather than specific issuer credit-related events. In addition, because we do not intend to sell and do not believe it is likely that we will be required to sell these investments before a recovery of fair value to amortized cost, we do not consider any of these investments to be other-than-temporarily impaired as of and for the six-month period ended June 30, 2011. The following summarizes our evaluation of investment categories with significant unrealized losses and securities that were rated below investment grade. All other investment categories with securities in an unrealized loss position that are not specifically discussed below were composed of investment grade fixed maturities.

Municipalities and Mortgage- and Asset-Backed Securities

As of June 30, 2011, 71% of the unrealized losses on investment securities in the municipalities sector and 70% of the unrealized losses on investment securities in the mortgage- and asset-backed securities sector were related to investments that were investment grade, compared with 82% and 54%, respectively, at December 31, 2010. We have determined that the majority of the unrealized losses on the investments in these sectors were caused by widening credit spreads. However, we have determined that the ability of the issuers to service our investments has not been compromised. Unrealized gains or losses related to prevailing interest rate environments are impacted by the remaining time to maturity of an investment. Assuming no credit-related factors develop, as investments near maturity the unrealized gains or losses can be expected to diminish.

Public Utilities

As of June 30, 2011, 95% of the unrealized losses on investments in the public utilities sector were related to investments that were investment grade, compared with 100% at December 31, 2010. For any credit-related declines in fair value, we perform a more focused review of the related issuer’s credit ratings, financial statements and other available financial data, timeliness of payment, competitive environment and any other significant data related to the issuer. From those reviews, we evaluate the issuers’ continued ability to service our investments. We have determined that the majority of the unrealized losses on the investments in the public utilities sector was caused by a decline in creditworthiness of a couple issuers in this sector. Also impacting the unrealized losses in the public utilities sector was widening credit spreads. Based on our credit analysis, we believe that our investments in this sector have the ability to service their obligations to us.

Bank and Financial Institution Investments

The following table shows the composition of our investments in an unrealized loss position in the bank and financial institution sector by fixed-maturity securities and perpetual securities. The table reflects those securities in that sector that were in an unrealized loss position as a percentage of our total investment portfolio in an unrealized loss position and their respective unrealized losses as a percentage of total unrealized losses.

	June 30, 2011		December 31, 2010
	Percentage of Total Investments in an Unrealized Loss Position	Percentage of Total Unrealized Losses	Percentage of Total Investments in an Unrealized Loss Position	Percentage of         Total         Unrealized         Losses
Fixed maturities	35  %	41  %	39  %	54  %
Perpetual securities:
Upper Tier II	5	6	9	10
Tier I	6	10	5	7
Total perpetual securities	11	16	14	17
Total	46  %	57  %	53  %	71   %

As of June 30, 2011, 78% of the $1.4 billion in unrealized losses on investments in the bank and financial institution sector, including perpetual securities, were related to investments that were investment grade, compared with 53% at December 31, 2010. This improvement is primarily due to the recognition of other-than-temporary impairments and sales of bank and financial institution securities during the first six months of 2011. Of the $13.9 billion in investments, at fair value, in the bank and financial institution sector in an unrealized loss position at June 30, 2011, only $.8 billion ($.3 billion in unrealized losses) were below investment grade. Two investments comprised nearly 83% of the $.3 billion unrealized loss. The remaining investments that comprised the unrealized loss were divided among eight issuers with average unrealized losses per investment of less than $7 million. We conduct our own independent credit analysis for investments in the bank and financial sector. Our assessment includes analysis of financial information, as well as consultation with the issuers from time to time. Based on our credit analysis, we have determined that the majority of the unrealized losses on the investments in this sector were caused by widening credit spreads, the downturn in the global economic environment and, to a lesser extent, changes in foreign exchange rates. Unrealized gains or losses related to prevailing interest rate environments are impacted by the remaining time to maturity of an investment. Assuming no credit-related factors develop, as investments near maturity, the unrealized gains or losses can be expected to diminish. Based on our credit analysis, we believe that our investments in this sector have the ability to service their obligations to us.

Other Corporate Investments

As of June 30, 2011, 61% of the unrealized losses on investments in the other corporate sector were related to investments that were investment grade, compared with 51% at December 31, 2010. For any credit-related declines in market value, we perform a more focused review of the related issuer’s credit ratings, financial statements and other available financial data, timeliness of payment, competitive environment and any other significant data related to the issuer. From those reviews, we evaluate the issuers’ continued ability to service our investments. We have determined that the majority of the unrealized losses on the investments in the other corporate sector was caused by widening credit spreads. Also impacting the unrealized losses in this sector is the decline in creditworthiness of certain issuers in the other corporate sector. Based on our credit analysis, we believe that our investments in this sector have the ability to service their obligation to us.

Perpetual Securities

At June 30, 2011, 93% of the unrealized losses on investments in perpetual securities were related to investments that were investment grade, compared with 83% at December 31, 2010. This improvement is primarily a result of the recognition of other-than-temporary impairments and sales of perpetual securities during the second quarter of 2011. The majority of our investments in Upper Tier II and Tier I perpetual securities were in highly rated global financial institutions. Upper Tier II securities have more debt-like characteristics than Tier I securities and are senior to Tier I securities, preferred stock, and common equity of the issuer. Conversely, Tier I securities have more equity-like characteristics, but are senior to the common equity of the issuer. They may also be senior to certain preferred shares, depending on the individual security, the issuer’s capital structure and the regulatory jurisdiction of the issuer.

Details of our holdings of perpetual securities were as follows:

Perpetual Securities

		June 30, 2011							December 31, 2010
(In millions)	Credit Rating	Amortized Cost		Fair Value		Unrealized Gain (Loss)			Amortized Cost		Fair Value		Unrealized Gain (Loss)
Upper Tier II:
	AA	$	192	$	204	$	12		$	190	$	201	$	11
	A		3,247		3,260		13			3,279		3,250		(29	)
	BBB		1,051		1,057		6			1,274		1,164		(110	)
	BB or lower		268		268		0			542		476		(66	)
Total Upper Tier II			4,758		4,789		31			5,285		5,091		(194	)
Tier I:
	A		601		524		(77	)		632		568		(64	)
	BBB		1,531		1,446		(85	)		1,386		1,296		(90	)
	BB or lower		369		344		(25	)		524		557		33
Total Tier I			2,501		2,314		(187	)		2,542		2,421		(121	)
Total		$	7,259	$	7,103	$	(156	)	$	7,827	$	7,512	$	(315	)

As discussed previously in the Investments Concentration section, a component of our efforts during the first half of 2011 to reduce risk in our investment portfolio included sales of certain investments in perpetual securities. With the exception of the Icelandic bank securities that we completely impaired in 2008, all of the perpetual securities we own were not in default on interest and principal payments at June 30, 2011. During the three-month period ended June 30, 2011, we wrote-off accrued interest income and stopped accruing further interest income for the Dexia S.A. Upper Tier II perpetual securities which have a deferred coupon and were impaired in the second quarter of 2011. Based on amortized cost as of June 30, 2011, the geographic breakdown of our perpetual securities by issuer was as follows: European countries, excluding the United Kingdom, (70%); the United Kingdom (10%); Japan (14%); and other (6%). To determine any credit-related declines in fair value, we perform a more focused review of the related issuer’s credit ratings, financial statements and other available financial data, timeliness of payment, competitive environment and any other significant data related to the issuer. From those reviews, we evaluate the issuer’s continued ability to service our investment.

We have determined that the majority of our unrealized losses in the perpetual security category has been principally due to widening credit spreads, largely as the result of the contraction of liquidity in the capital markets. However, there was some credit tightening in the first six months of 2011 that improved our net unrealized loss position. Based on our reviews, we concluded that the ability of the issuers to service our investment has not been compromised by these factors. Unrealized gains or losses related to prevailing interest rate environments are impacted by the remaining time to maturity of an investment. Assuming no credit-related factors develop, as the investments near economic maturity, the unrealized gains or losses can be expected to diminish. Based on our credit analyses, we believe that our investments in this sector have the ability to service their obligation to us.

Variable Interest Entities (VIEs)

As discussed in Note 1, effective January 1, 2010, we have consolidated all of the components of each former QSPE investment, including a fixed-maturity or perpetual investment and a corresponding derivative transaction. Our risk of loss over the life of each investment is limited to the amount of our original investment. In addition, new criteria for determining the primary beneficiary of a VIE that was effective January 1, 2010, resulted in the consolidation of additional VIE investments. The following table details our investments in VIEs.

Investments in Variable Interest Entities

	June 30, 2011				December 31, 2010
(In millions)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
VIEs:
Consolidated:
Total VIEs consolidated	$	7,104	$	7,247	$	7,201	$	7,363
Not consolidated:
CDOs		4		4		5		5
Other		13,044		13,191		13,914		13,214
Total VIEs not consolidated		13,048		13,195		13,919		13,219
Total VIEs	$	20,152	$	20,442	$	21,120	$	20,582

As a condition to our involvement or investment in a VIE, we enter into certain protective rights and covenants that preclude changes in the structure of the VIE that would alter the creditworthiness of our investment or our beneficial interest in the VIE.

Our involvement with all of the VIEs in which we have an interest is passive in nature, and we are not the arranger of these entities. Except as relates to our review and evaluation of the structure of these VIEs in the normal course of our investment decision-making process, we have not been involved in establishing these entities. Further, we have not been nor are we required to purchase the securities issued in the future by any of these VIEs.

Our ownership interest in the VIEs is limited to holding the obligations issued by them. All of the VIEs in which we invest are static with respect to funding and have no ongoing forms of funding after the initial funding date. We have no direct or contingent obligations to fund the limited activities of these VIEs, nor do we have any direct or indirect financial guarantees related to the limited activities of these VIEs. We have not provided any assistance or any other type of financing support to any of the VIEs we invest in, nor do we have any intention to do so in the future. The weighted-average lives of our notes are very similar to the underlying collateral held by these VIEs where applicable.

Our risk of loss related to our interests in any of our VIEs is limited to our investment in the debt securities issued by them.

VIEs-Consolidated

We are substantively the only investor in the consolidated VIEs listed in the table above. As the sole investor in these VIEs, we have the power to direct the activities of a variable interest entity that most significantly impact the entity’s economic performance and are therefore considered to be the primary beneficiary of the VIEs that we consolidate. We also participate in substantially all of the variability created by these VIEs. The activities of these VIEs are limited to holding debt and perpetual securities and interest rate, foreign currency, and/or credit default swaps (CDSs), as appropriate, and utilizing the cash flows from these securities to service our investment. Neither we nor any of our creditors are able to obtain the underlying collateral of the VIEs unless there is an event of default or other specified event. For those VIEs that contain a swap, we are not a direct counterparty to the swap contracts and have no control over them. Our loss exposure to these VIEs is limited to our original investment. Our consolidated VIEs do not rely on outside or ongoing sources of funding to support their activities beyond the underlying collateral and swap contracts, if applicable. With the exception of our investment in senior secured bank loans through a unit trust structure that we began investing in during the second quarter of 2011, the underlying collateral assets and funding of our consolidated VIEs are generally static in nature and the underlying collateral and the reference corporate entities covered by any CDS contracts are all investment grade at the time of issuance.

We are exposed to credit losses within any consolidated collateralized debt obligations (CDOs) that could result in principal losses to our investments. We have mitigated our risk of credit loss through the structure of the VIE, which contractually requires the subordinated tranches within these VIEs to absorb the majority of the expected losses from the underlying credit default swaps. We currently own only senior CDO tranches. Based on our statistical analysis models, each of these VIEs can sustain a reasonable number of defaults in the underlying reference corporate entities in the CDSs with no loss to our investment.

VIEs-Not Consolidated

With the exception of one CDO investment, the VIEs that we are not required to consolidate are investments that are limited to loans in the form of debt obligations from the VIEs that are irrevocably and unconditionally guaranteed by their corporate parents. These VIEs are the primary financing vehicles used by their corporate sponsors to raise financing in the international capital markets. The variable interests created by these VIEs are principally or solely a result of the debt instruments issued by them. We do not have the power to direct the activities that most significantly impact the entity’s economic performance, nor do we have (1) the obligation to absorb losses of the entity or (2) the right to receive benefits from the entity. As such, we are not the primary beneficiary of these VIEs and are therefore not required to consolidate them. These VIE investments are comprised of securities from 167 separate issuers which have an average credit rating of A.

Securities Lending

We lend fixed-maturity securities to financial institutions in short-term security-lending transactions. These short-term security-lending arrangements increase investment income with minimal risk. Our security lending policy requires that the fair value of the securities and/or unrestricted cash received as collateral be 102% or more of the fair value of the loaned securities. The following table presents our security loans outstanding and the corresponding collateral held:

(In millions)	June 30,     2011		December 31,     2010
Security loans outstanding, fair value	$	328	$	186
Cash collateral on loaned securities		338		191

All security lending agreements are callable by us at any time.

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Composition of Investments in an Unrealized Loss Position in the Bank and Financial Institution Sector (Detail) (Banks/financial Institutions)	Jun. 30, 2011	Dec. 31, 2010
Investments, Unrealized Loss Position [Line Items]
Percentage of Total Investments in an Unrealized Loss Position	46.00%	53.00%
Percentage of Total Unrealized Losses	57.00%	71.00%
Perpetual Securities
Investments, Unrealized Loss Position [Line Items]
Percentage of Total Investments in an Unrealized Loss Position	11.00%	14.00%
Percentage of Total Unrealized Losses	16.00%	17.00%
Perpetual Securities | Upper Tier II
Investments, Unrealized Loss Position [Line Items]
Percentage of Total Investments in an Unrealized Loss Position	5.00%	9.00%
Percentage of Total Unrealized Losses	6.00%	10.00%
Perpetual Securities | Tier I
Investments, Unrealized Loss Position [Line Items]
Percentage of Total Investments in an Unrealized Loss Position	6.00%	5.00%
Percentage of Total Unrealized Losses	10.00%	7.00%
Fixed Maturities
Investments, Unrealized Loss Position [Line Items]
Percentage of Total Investments in an Unrealized Loss Position	35.00%	39.00%
Percentage of Total Unrealized Losses	41.00%	54.00%

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Operations by Segment - Revenues and Pretax Earnings (Detail) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Segment Reporting, Revenue Reconciling Item [Line Items]
Earned premiums	$ 4,956	$ 4,333	$ 9,828	$ 8,681
Net investment income	784	727	1,579	1,453
Other income	16	9	44	45
Realized investment gains (losses)	(668)	(89)	(1,247)	(135)
Pretax operating earnings	1,121	978	2,299	1,998
Earnings before income taxes	453	889	1,052	1,863
Income taxes applicable to pretax operating earnings	388	339	795	693
Effect of foreign currency translation on operating earnings	51	12	99	33
Total Revenues	5,088	4,980	10,204	10,044
Aflac Japan
Segment Reporting, Revenue Reconciling Item [Line Items]
Earned premiums	3,770	3,186	7,472	6,393
Net investment income	636	593	1,285	1,186
Other income	5	(1)	25	26
Total business segment revenues	4,411	3,778	8,782	7,605
Pretax operating earnings	931	798	1,911	1,619
Aflac U.S.
Segment Reporting, Revenue Reconciling Item [Line Items]
Earned premiums	1,186	1,147	2,356	2,289
Net investment income	148	135	291	267
Other income	3	3	6	5
Total business segment revenues	1,337	1,285	2,653	2,561
Pretax operating earnings	246	227	499	471
Other business segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Total business segment revenues	13	11	28	23
Pretax operating earnings	0	(1)	0	(2)
Total Business Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Total business segment revenues	5,761	5,074	11,463	10,189
Pretax operating earnings	1,177	1,024	2,410	2,088
Corporate
Segment Reporting, Revenue Reconciling Item [Line Items]
Total Revenues	60	49	121	101
Intercompany eliminations
Segment Reporting, Revenue Reconciling Item [Line Items]
Total Revenues	(65)	(54)	(133)	(111)
Interest Expense, noninsurance operations
Segment Reporting, Revenue Reconciling Item [Line Items]
Pretax operating earnings	(41)	(31)	(82)	(63)
Corporate and eliminations
Segment Reporting, Revenue Reconciling Item [Line Items]
Pretax operating earnings	$ (15)	$ (15)	$ (29)	$ (27)

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SHARE-BASED COMPENSATION - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2011 Year	Jun. 30, 2010
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Shares available for future grants under the long-term incentive plan	15,200,000
Total compensation cost not yet recognized, restricted stock awards, weighted-average period (in years)	1.5
Cash from the exercise of stock options	$ 13.0	$ 46.0
Tax benefit realized as a result of stock option exercises and restricted stock releases	11.9	20.0
Total compensation cost not yet recognized, restricted stock awards	32.4
Performance based Vesting Condition
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Total compensation cost not yet recognized, restricted stock awards	$ 16.4
Total compensation cost not yet recognized, restricted stock awards, shares	688,000

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Contractual Maturities of Investments in Fixed Maturities (Detail) (USD $) In Millions	Jun. 30, 2011
Aflac Japan
Available for sale:
Due in one year or less	$ 1,515
Due after one year through five years	3,755
Due after five years through 10 years	3,697
Due after 10 years	32,370
Mortgage- and asset-backed securities	1,327
Total fixed maturities available for sale	42,664
Held to maturity:
Due in one year or less	714
Due after one year through five years	1,172
Due after five years through 10 years	3,103
Due after 10 years	26,782
Mortgage- and asset-backed securities	137
Total fixed maturities held to maturity	31,908
Available for sale:
Due in one year or less	1,558
Due after one year through five years	3,964
Due after five years through 10 years	3,951
Due after 10 years	32,378
Mortgage- and asset-backed securities	1,441
Total fixed maturities available for sale	43,292
Held to maturity:
Due in one year or less	724
Due after one year through five years	1,265
Due after five years through 10 years	3,439
Due after 10 years	26,413
Mortgage- and asset-backed securities	141
Total fixed maturities held to maturity	31,982
Aflac U.S.
Available for sale:
Due in one year or less	56
Due after one year through five years	255
Due after five years through 10 years	936
Due after 10 years	7,199
Mortgage- and asset-backed securities	47
Total fixed maturities available for sale	8,493
Held to maturity:
Due in one year or less	0
Due after one year through five years	0
Due after five years through 10 years	0
Due after 10 years	0
Mortgage- and asset-backed securities	0
Total fixed maturities held to maturity	0
Available for sale:
Due in one year or less	57
Due after one year through five years	287
Due after five years through 10 years	1,076
Due after 10 years	7,619
Mortgage- and asset-backed securities	56
Total fixed maturities available for sale	9,095
Held to maturity:
Due in one year or less	0
Due after one year through five years	0
Due after five years through 10 years	0
Due after 10 years	0
Mortgage- and asset-backed securities	0
Total fixed maturities held to maturity	$ 0

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Fair Value and Gross Unrealized Losses for Securities That Have Been in a Continuous Unrealized Loss Position (Detail) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Investments, Unrealized Loss Position [Line Items]
Total Fair Value	$ 29,906	$ 30,654
Total Unrealized Losses	2,530	3,363
Less than 12 months Fair Value	10,451	10,582
Less than 12 months Unrealized Losses	278	435
12 months or longer Fair Value	19,455	20,072
12 months or longer Unrealized Losses	2,252	2,928
Fixed Maturities
Investments, Unrealized Loss Position [Line Items]
Total Fair Value	26,592	26,262
Total Unrealized Losses	2,131	2,798
Less than 12 months Fair Value	9,846	8,627
Less than 12 months Unrealized Losses	253	296
12 months or longer Fair Value	16,746	17,635
12 months or longer Unrealized Losses	1,878	2,502
Fixed Maturities | Yen Denominated | Japan government and agencies
Investments, Unrealized Loss Position [Line Items]
Total Fair Value	1,590	1,634
Total Unrealized Losses	16	18
Less than 12 months Fair Value	1,590	1,634
Less than 12 months Unrealized Losses	16	18
12 months or longer Fair Value	0	0
12 months or longer Unrealized Losses	0	0
Fixed Maturities | Yen Denominated | Mortgage- and asset-backed Securities
Investments, Unrealized Loss Position [Line Items]
Total Fair Value	154	415
Total Unrealized Losses	5	15
Less than 12 months Fair Value	12	415
Less than 12 months Unrealized Losses	1	15
12 months or longer Fair Value	142	0
12 months or longer Unrealized Losses	4	0
Fixed Maturities | Yen Denominated | Public Utilities
Investments, Unrealized Loss Position [Line Items]
Total Fair Value	4,340	2,877
Total Unrealized Losses	244	200
Less than 12 months Fair Value	1,886	766
Less than 12 months Unrealized Losses	42	47
12 months or longer Fair Value	2,454	2,111
12 months or longer Unrealized Losses	202	153
Fixed Maturities | Yen Denominated | Sovereign and Supranational
Investments, Unrealized Loss Position [Line Items]
Total Fair Value	2,115	1,579
Total Unrealized Losses	108	77
Less than 12 months Fair Value	968	428
Less than 12 months Unrealized Losses	16	1
12 months or longer Fair Value	1,147	1,151
12 months or longer Unrealized Losses	92	76
Fixed Maturities | Yen Denominated | Banks/financial Institutions
Investments, Unrealized Loss Position [Line Items]
Total Fair Value	9,517	10,609
Total Unrealized Losses	999	1,703
Less than 12 months Fair Value	1,111	1,506
Less than 12 months Unrealized Losses	29	40
12 months or longer Fair Value	8,406	9,103
12 months or longer Unrealized Losses	970	1,663
Fixed Maturities | Yen Denominated | Other Corporate
Investments, Unrealized Loss Position [Line Items]
Total Fair Value	4,739	4,503
Total Unrealized Losses	574	503
Less than 12 months Fair Value	1,248	507
Less than 12 months Unrealized Losses	53	45
12 months or longer Fair Value	3,491	3,996
12 months or longer Unrealized Losses	521	458
Fixed Maturities | Yen Denominated | Municipalities
Investments, Unrealized Loss Position [Line Items]
Total Fair Value	58	59
Total Unrealized Losses	4	2
Less than 12 months Fair Value	0	0
Less than 12 months Unrealized Losses	0	0
12 months or longer Fair Value	58	59
12 months or longer Unrealized Losses	4	2
Fixed Maturities | Dollar Denominated | Mortgage- and asset-backed Securities
Investments, Unrealized Loss Position [Line Items]
Total Fair Value	20	78
Total Unrealized Losses	1	13
Less than 12 months Fair Value	5	20
Less than 12 months Unrealized Losses	0	0
12 months or longer Fair Value	15	58
12 months or longer Unrealized Losses	1	13
Fixed Maturities | Dollar Denominated | Public Utilities
Investments, Unrealized Loss Position [Line Items]
Total Fair Value	636	556
Total Unrealized Losses	35	36
Less than 12 months Fair Value	585	498
Less than 12 months Unrealized Losses	28	28
12 months or longer Fair Value	51	58
12 months or longer Unrealized Losses	7	8
Fixed Maturities | Dollar Denominated | Sovereign and Supranational
Investments, Unrealized Loss Position [Line Items]
Total Fair Value	62	45
Total Unrealized Losses	3	2
Less than 12 months Fair Value	29	12
Less than 12 months Unrealized Losses	1	0
12 months or longer Fair Value	33	33
12 months or longer Unrealized Losses	2	2
Fixed Maturities | Dollar Denominated | Banks/financial Institutions
Investments, Unrealized Loss Position [Line Items]
Total Fair Value	1,074	1,484
Total Unrealized Losses	52	108
Less than 12 months Fair Value	535	753
Less than 12 months Unrealized Losses	15	22
12 months or longer Fair Value	539	731
12 months or longer Unrealized Losses	37	86
Fixed Maturities | Dollar Denominated | Other Corporate
Investments, Unrealized Loss Position [Line Items]
Total Fair Value	1,882	1,741
Total Unrealized Losses	69	79
Less than 12 months Fair Value	1,512	1,456
Less than 12 months Unrealized Losses	43	52
12 months or longer Fair Value	370	285
12 months or longer Unrealized Losses	26	27
Fixed Maturities | Dollar Denominated | Municipalities
Investments, Unrealized Loss Position [Line Items]
Total Fair Value	405	682
Total Unrealized Losses	21	42
Less than 12 months Fair Value	365	632
Less than 12 months Unrealized Losses	9	28
12 months or longer Fair Value	40	50
12 months or longer Unrealized Losses	12	14
Perpetual Securities
Investments, Unrealized Loss Position [Line Items]
Total Fair Value	3,306	4,379
Total Unrealized Losses	397	563
Less than 12 months Fair Value	599	1,942
Less than 12 months Unrealized Losses	24	138
12 months or longer Fair Value	2,707	2,437
12 months or longer Unrealized Losses	373	425
Perpetual Securities | Yen Denominated
Investments, Unrealized Loss Position [Line Items]
Total Fair Value	3,096	4,171
Total Unrealized Losses	374	533
Less than 12 months Fair Value	482	1,793
Less than 12 months Unrealized Losses	21	119
12 months or longer Fair Value	2,614	2,378
12 months or longer Unrealized Losses	353	414
Perpetual Securities | Dollar Denominated
Investments, Unrealized Loss Position [Line Items]
Total Fair Value	210	208
Total Unrealized Losses	23	30
Less than 12 months Fair Value	117	149
Less than 12 months Unrealized Losses	3	19
12 months or longer Fair Value	93	59
12 months or longer Unrealized Losses	20	11
Equity Securities
Investments, Unrealized Loss Position [Line Items]
Total Fair Value	8	13
Total Unrealized Losses	2	2
Less than 12 months Fair Value	6	13
Less than 12 months Unrealized Losses	1	1
12 months or longer Fair Value	2	0
12 months or longer Unrealized Losses	1	1
Banks/financial Institutions
Investments, Unrealized Loss Position [Line Items]
Total Fair Value	13,900
Total Unrealized Losses	$ 1,400

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Investments in Debt Securities, Perpetual Securities and Equity Securities (Detail) (USD $) In Millions	Jun. 30, 2011		Dec. 31, 2010
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	$ 58,548		$ 55,951
Gross Unrealized Gains	2,712		2,539
Gross Unrealized Losses	1,628		2,600
Fair Value	59,632		55,890
Cost or Amortized Cost	31,908		30,084
Gross Unrealized Gains	976		1,148
Gross Unrealized Losses	902		763
Fair Value	31,982		30,469
Fixed Maturities
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	51,268		48,102
Gross Unrealized Gains	2,467		2,288
Gross Unrealized Losses	1,229		2,035
Fair Value	52,506		48,355
Fixed Maturities | Yen Denominated
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	33,281		32,948
Gross Unrealized Gains	1,066		1,071
Gross Unrealized Losses	1,048		1,755
Fair Value	33,299		32,264
Cost or Amortized Cost	31,908		30,084
Gross Unrealized Gains	976		1,148
Gross Unrealized Losses	902		763
Fair Value	31,982		30,469
Fixed Maturities | Yen Denominated | Japan government and agencies
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	17,436		16,607
Gross Unrealized Gains	556		584
Gross Unrealized Losses	12		14
Fair Value	17,980		17,177
Cost or Amortized Cost	3,216		344
Gross Unrealized Gains	70		4
Gross Unrealized Losses	4		4
Fair Value	3,282		344
Fixed Maturities | Yen Denominated | Mortgage- and asset-backed Securities
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	923		1,224
Gross Unrealized Gains	32		35
Gross Unrealized Losses	5		15
Fair Value	950		1,244
Cost or Amortized Cost	136		146
Gross Unrealized Gains	4		5
Gross Unrealized Losses	0		0
Fair Value	140		151
Fixed Maturities | Yen Denominated | Public Utilities
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	2,575		2,554
Gross Unrealized Gains	71		117
Gross Unrealized Losses	117		80
Fair Value	2,529		2,591
Cost or Amortized Cost	6,396		6,339
Gross Unrealized Gains	260		326
Gross Unrealized Losses	127		120
Fair Value	6,529		6,545
Fixed Maturities | Yen Denominated | Sovereign and Supranational
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	1,721		903
Gross Unrealized Gains	119		47
Gross Unrealized Losses	19		12
Fair Value	1,821		938
Cost or Amortized Cost	4,173		4,951
Gross Unrealized Gains	198		305
Gross Unrealized Losses	89		65
Fair Value	4,282		5,191
Fixed Maturities | Yen Denominated | Banks/financial Institutions
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	4,766		5,927
Gross Unrealized Gains	134		152
Gross Unrealized Losses	410		1,177
Fair Value	4,490		4,902
Cost or Amortized Cost	12,303		12,618
Gross Unrealized Gains	211		216
Gross Unrealized Losses	589		526
Fair Value	11,925		12,308
Fixed Maturities | Yen Denominated | Other Corporate
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	5,860		5,733
Gross Unrealized Gains	154		136
Gross Unrealized Losses	485		457
Fair Value	5,529		5,412
Cost or Amortized Cost	5,149		5,279
Gross Unrealized Gains	214		274
Gross Unrealized Losses	89		46
Fair Value	5,274		5,507
Fixed Maturities | Yen Denominated | Municipalities
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	535		407
Gross Unrealized Gains	19		18
Gross Unrealized Losses	4		2
Fair Value	550		423
Fixed Maturities | Dollar Denominated
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	17,987		15,154
Gross Unrealized Gains	1,401		1,217
Gross Unrealized Losses	181		280
Fair Value	19,207		16,091
Fixed Maturities | Dollar Denominated | Mortgage- and asset-backed Securities
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	451	[1]	485	[2]
Gross Unrealized Gains	98	[1]	90	[2]
Gross Unrealized Losses	1	[1]	13	[2]
Fair Value	548	[1]	562	[2]
Fixed Maturities | Dollar Denominated | Public Utilities
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	2,824		2,568
Gross Unrealized Gains	266		246
Gross Unrealized Losses	35		36
Fair Value	3,055		2,778
Fixed Maturities | Dollar Denominated | Sovereign and Supranational
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	392		395
Gross Unrealized Gains	67		63
Gross Unrealized Losses	3		2
Fair Value	456		456
Fixed Maturities | Dollar Denominated | Banks/financial Institutions
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	3,298		3,496
Gross Unrealized Gains	180		143
Gross Unrealized Losses	52		108
Fair Value	3,426		3,531
Fixed Maturities | Dollar Denominated | Other Corporate
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	8,175		7,167
Gross Unrealized Gains	700		662
Gross Unrealized Losses	69		79
Fair Value	8,806		7,750
Fixed Maturities | Dollar Denominated | U.S. Government and Agencies
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	1,816		32
Gross Unrealized Gains	71		4
Gross Unrealized Losses	0		0
Fair Value	1,887		36
Fixed Maturities | Dollar Denominated | Municipalities
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	1,027		1,006
Gross Unrealized Gains	19		9
Gross Unrealized Losses	21		42
Fair Value	1,025		973
Fixed Maturities | Dollar Denominated | Collateralized Debt Obligations
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	4		5
Gross Unrealized Gains	0		0
Gross Unrealized Losses	0		0
Fair Value	4		5
Perpetual Securities
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	7,259		7,827
Gross Unrealized Gains	241		248
Gross Unrealized Losses	397		563
Fair Value	7,103		7,512
Perpetual Securities | Yen Denominated | Banks/financial Institutions
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	6,570		7,080
Gross Unrealized Gains	200		172
Gross Unrealized Losses	374		533
Fair Value	6,396		6,719
Perpetual Securities | Yen Denominated | Other Corporate
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	332		328
Gross Unrealized Gains	25		15
Gross Unrealized Losses	0		0
Fair Value	357		343
Perpetual Securities | Dollar Denominated | Banks/financial Institutions
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	357		419
Gross Unrealized Gains	16		61
Gross Unrealized Losses	23		30
Fair Value	350		450
Equity Securities
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	21		22
Gross Unrealized Gains	4		3
Gross Unrealized Losses	2		2
Fair Value	$ 23		$ 23

[1] Includes less than $1 million of other-than-temporary non-credit-related losses

[2] Includes $4 of other-than-temporary non-credit-related losses

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)

6 Months Ended

Jun. 30, 2011

Description of Business

Description of Business

Aflac Incorporated (the Parent Company) and its subsidiaries (collectively, the Company) primarily sell supplemental health and life insurance in the United States and Japan. The Company’s insurance business is marketed and administered through American Family Life Assurance Company of Columbus (Aflac), which operates in the United States (Aflac U.S.) and as a branch in Japan (Aflac Japan). Most of Aflac’s policies are individually underwritten and marketed through independent agents. Aflac U.S. markets and administers group products through Continental American Insurance Company (CAIC). Our insurance operations in the United States and our branch in Japan service the two markets for our insurance business. Aflac Japan’s revenues, including realized gains and losses on its investment portfolio, accounted for 73% and 75% of the Company’s total revenues in the six-month periods ended June 30, 2011, and 2010, respectively. The percentage of the Company’s total assets attributable to Aflac Japan was 87% and 86% at June 30, 2011, and December 31, 2010, respectively.

Basis of Presentation

Basis of Presentation

We prepare our financial statements in accordance with U.S. generally accepted accounting principles (GAAP). These principles are established primarily by the Financial Accounting Standards Board (FASB). In these Notes to the Consolidated Financial Statements, references to GAAP issued by the FASB are derived from the FASB Accounting Standards Codification^TM (ASC). The preparation of financial statements in conformity with GAAP requires us to make estimates when recording transactions resulting from business operations based on currently available information. The most significant items on our balance sheet that involve a greater degree of accounting estimates and actuarial determinations subject to changes in the future are the valuation of investments, deferred policy acquisition costs, liabilities for future policy benefits and unpaid policy claims, and income taxes. These accounting estimates and actuarial determinations are sensitive to market conditions, investment yields, mortality, morbidity, commission and other acquisition expenses, and terminations by policyholders. As additional information becomes available, or actual amounts are determinable, the recorded estimates will be revised and reflected in operating results. Although some variability is inherent in these estimates, we believe the amounts provided are adequate.

The unaudited consolidated financial statements include the accounts of the Parent Company, its subsidiaries and those entities required to be consolidated under applicable accounting standards. All material intercompany accounts and transactions have been eliminated.

In the opinion of management, the accompanying unaudited consolidated financial statements of the Company contain all adjustments, consisting of normal recurring accruals, which are necessary to fairly present the consolidated balance sheets as of June 30, 2011, and December 31, 2010, the consolidated statements of earnings and comprehensive income (loss) for the three- and six-month periods ended June 30, 2011, and 2010, and the consolidated statements of shareholders’ equity and cash flows for the six-month periods ended June 30, 2011, and 2010. Results of operations for interim periods are not necessarily indicative of results for the entire year. As a result, these financial statements should be read in conjunction with the financial statements and notes thereto included in our annual report to shareholders for the year ended December 31, 2010.

Translation of Foreign Currencies

Translation of Foreign Currencies: The functional currency of Aflac Japan’s insurance operations is the Japanese yen. We translate our yen-denominated financial statement accounts into U.S. dollars as follows. Assets and liabilities are translated at end-of-period exchange rates. Realized gains and losses on security transactions are translated at the exchange rate on the trade date of each transaction. Other revenues, expenses and cash flows are translated using average exchange rates for the period. The resulting currency translation adjustments are reported in accumulated other comprehensive income. We include in earnings the realized currency exchange gains and losses resulting from transactions.

Aflac Japan maintains an investment portfolio of dollar-denominated securities on behalf of Aflac U.S., which serves as an economic currency hedge of a portion of our investment in Aflac Japan. The functional currency for these investments is the U.S. dollar. The related investment income and realized/unrealized investment gains and losses are also denominated in U.S. dollars. Since the functional currency of Aflac Japan’s dollar-denominated portfolio is the U.S. dollar, there is no translation adjustment to record in other comprehensive income for these investments when the yen/dollar exchange rate changes. However, the foreign exchange gains and losses related to this portfolio are taxable in Japan and the U.S. when the securities mature or are sold. Until maturity or sale, deferred tax expense or benefit associated with the foreign exchange gains or losses are recognized in the income tax expense on other comprehensive income.

We have designated the yen-denominated Uridashi and Samurai notes and yen-denominated loans issued by the Parent Company as a hedge of our investment in Aflac Japan. Outstanding principal and related accrued interest on these items are translated into U.S. dollars at end-of-period exchange rates. Currency translation adjustments are recorded through other comprehensive income and are included in accumulated other comprehensive income.

Income Taxes

Income Taxes: Income tax provisions are generally based on pretax earnings reported for financial statement purposes, which differ from those amounts used in preparing our income tax returns. Deferred income taxes are recognized for temporary differences between the financial reporting basis and income tax basis of assets and liabilities, based on enacted tax laws and statutory tax rates applicable to the periods in which we expect the temporary differences to reverse. We record deferred tax assets for tax positions taken based on our assessment of whether the tax position is more likely than not to be sustained upon examination by taxing authorities. A valuation allowance is established for deferred tax assets when it is more likely than not that an amount will not be realized.

As discussed in the Translation of Foreign Currencies section above, Aflac Japan maintains a dollar-denominated investment portfolio on behalf of Aflac U.S. While there are no translation effects to record in other comprehensive income, the deferred tax expense or benefit associated with foreign exchange gains or losses on the portfolio is recognized in other comprehensive income until the securities mature or are sold. Total income tax expense (benefit) related to items of other comprehensive income (loss) included a tax benefit of $112.4 million and $117.8 million during the three-month periods ended June 30, 2011 and 2010, respectively, for this dollar-denominated portfolio. Excluding these amounts from total taxes on other comprehensive income would result in an effective income tax rate on pretax other comprehensive income (loss) of 36.0% and 31.5% in the three-month periods ended June 30, 2011 and 2010, respectively. Total income tax expense (benefit) related to items of other comprehensive income (loss) included a tax benefit of $50.4 million and $95.3 million during the six-month periods ended June 30, 2011 and 2010, respectively, for this dollar-denominated portfolio. Excluding these amounts from total taxes on other comprehensive income would result in an effective income tax rate on pretax other comprehensive income (loss) of 35.7% and 33.5% in the six-month periods ended June 30, 2011 and 2010, respectively.

Recently Adopted Accounting Pronouncements

Recently Adopted Accounting Pronouncements

Fair value measurements and disclosures: In January 2010, the FASB issued amended accounting guidance on fair value disclosures. This guidance requires the activity in fair value hierarchy Level 3 for purchases, sales, issuances, and settlements to be reported on a gross, rather than net, basis. We adopted this guidance as of January 1, 2011. The adoption did not have an impact on our financial position or results of operations.

Accounting for variable interest entities and transfers of financial assets: In June 2009, the FASB issued amended guidance on accounting for variable interest entities (VIEs) and transfers of financial assets. As discussed above, this guidance defines new criteria for determining the primary beneficiary of a VIE; increases the frequency of required reassessments to determine whether a company is the primary beneficiary of a VIE; eliminates the exemption for the consolidation of qualified special purpose entities (QSPEs); establishes conditions for reporting a transfer of a portion of a financial asset as a sale; modifies the financial asset derecognition criteria; and requires additional disclosures. We adopted the provisions of this guidance on January 1, 2010 as a cumulative effect of change in accounting principle. We were required to consolidate certain of the VIEs with which we are currently involved. We were not required to deconsolidate any VIEs on January 1, 2010.

Upon the initial consolidation of the VIEs on January 1, 2010, the assets, liabilities, and noncontrolling interests of the VIEs were recorded at their carrying values, which is the amounts at which the assets, liabilities, and noncontrolling interests would have been carried in the consolidated financial statements when we first met the conditions to be the primary beneficiary. For any of the VIEs that were required to be consolidated, we also considered whether any of the derivatives in these structures qualified on January 1, 2010, as a cash flow hedge of the changes in cash flows attributable to foreign currency and/or interest rate risk. Certain of the swaps did not qualify for hedge accounting since the swap had a fair value on January 1, 2010. Other swaps did not qualify for hedge accounting since they increased, rather than reduced, cash flow risk.

For additional information concerning our investments in VIEs and derivatives, see Notes 3 and 4, respectively.

Accounting Pronouncements Pending Adoption

Accounting Pronouncements Pending Adoption

Presentation of comprehensive income: In June 2011, the FASB issued guidance to amend the presentation of comprehensive income. The amendments require that all non-owner changes in stockholders’ equity be presented either in a single continuous statement of comprehensive income or in two separate but consecutive statements. The amendment also requires reclassification adjustments for items that are reclassified from other comprehensive income to net income to be presented in the statements where the components of net income and the components of other comprehensive income are presented. This guidance is effective for interim and annual periods beginning after December 15, 2011. We do not expect the adoption of this guidance to have any impact on our financial position or results of operations.

Fair value measurements and disclosures: In May 2011, the FASB issued guidance to amend the fair value measurement and disclosure requirements. Most of the amendments are clarifications of the FASB’s intent about the application of existing fair value measurement and disclosure requirements. Other amendments change a particular principle or requirement for measuring fair value or disclosing information about fair value measurements. The new fair value measurement disclosures include additional quantitative and qualitative disclosures for Level 3 measurements, including a qualitative sensitivity analysis of fair value to changes in unobservable inputs, and categorization by fair value hierarchy level for items for which the fair value is only disclosed. This guidance is effective for interim and annual periods beginning after December 15, 2011. We are currently evaluating the impact of adopting this guidance on our financial position and results of operations.

Accounting for costs associated with acquiring or renewing insurance contracts: In October 2010, the FASB issued amended accounting guidance on accounting for costs associated with acquiring or renewing insurance contracts. Only incremental direct costs associated with the successful acquisition of a new or renewal contract may be capitalized. The amendment also prohibits capitalizing direct-response advertising costs unless they meet certain criteria. This guidance is effective for interim and annual periods beginning after December 15, 2011. We are currently evaluating the impact of adopting this guidance on our financial position and results of operations.

Recent accounting guidance not discussed above is not applicable or did not have an impact on our business.

For additional information on new accounting pronouncements and recent accounting guidance and their impact, if any, on our financial position or results of operations, see Note 1 of the Notes to the Consolidated Financial Statements in our annual report to shareholders for the year ended December 31, 2010.

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Summary of Notes Payable (Detail) (USD $) In Millions	Jun. 30, 2011		Dec. 31, 2010
Debt Instrument [Line Items]
Notes payable	$ 3,048		$ 3,038
8.50% senior notes due May 2019
Debt Instrument [Line Items]
Notes payable	850		850
6.45% senior notes due August 2040
Debt Instrument [Line Items]
Notes payable	448	[1]	448	[1]
6.90% senior notes due December 2039
Debt Instrument [Line Items]
Notes payable	396	[2]	396	[2]
3.45% senior notes due August 2015
Debt Instrument [Line Items]
Notes payable	300		300
1.52% yen-denominated Uridashi notes due September 2011
Debt Instrument [Line Items]
Notes payable	186		184
2.26% yen-denominated Uridashi notes due September 2016
Debt Instrument [Line Items]
Notes payable	99		98
Variable interest rate yen-denominated Uridashi notes due September 2011
Debt Instrument [Line Items]
Notes payable	248		245
1.87% yen-denominated Samurai notes due June 2012
Debt Instrument [Line Items]
Notes payable	329		327
3.60% yen-denominated loan due July 2015
Debt Instrument [Line Items]
Notes payable	124		123
3.00% yen-denominated loan due August 2015
Debt Instrument [Line Items]
Notes payable	62		61
Capitalized Lease Obligations
Debt Instrument [Line Items]
Notes payable	$ 6		$ 6

[1] $450 issuance net of a $2 underwriting discount that is being amortized over the life of the notes

[2] $400 issuance net of a $4 underwriting discount that is being amortized over the life of the notes

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SHAREHOLDERS' EQUITY - Additional Information (Detail) In Millions	6 Months Ended
	Jun. 30, 2011
Stockholders Equity Note [Line Items]
Common stock, shares repurchased	4.1
Share Repurchase Authorization 2008
Stockholders Equity Note [Line Items]
Remaining common stock available for purchase under share repurchase authorizations	26.3

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DERIVATIVE INSTRUMENTS

6 Months Ended

Jun. 30, 2011

DERIVATIVE INSTRUMENTS

4.   DERIVATIVE INSTRUMENTS

We do not use derivative financial instruments for trading purposes, nor do we engage in leveraged derivative transactions. The majority of our freestanding derivatives are interest rate, foreign currency and credit default swaps that are associated with investments in special-purpose entities, including VIEs where we are the primary beneficiary. The remaining derivatives are interest rate swaps associated with our variable interest rate yen-denominated debt.

Derivative Types

Interest rate and credit default swaps involve the periodic exchange of cash flows with other parties, at specified intervals, calculated using agreed upon rates or other financial variables and notional principal amounts. Generally, no cash or principal payments are exchanged at the inception of the contract. Typically, at the time a swap is entered into, the cash flow streams exchanged by the counterparties are equal in value. Interest rate swaps are primarily used to convert interest receipts on floating-rate fixed-maturity securities contracts to fixed rates. These derivatives are predominantly used to better match cash receipts from assets with cash disbursements required to fund liabilities.

Credit default swaps are used to assume credit risk related to an individual security or an index. These contracts entitle the consolidated VIE to receive a periodic fee in exchange for an obligation to compensate the derivative counterparty should the referenced security issuers experience a credit event, as defined in the contract. The consolidated VIE is also exposed to credit risk due to embedded derivatives associated with credit-linked notes.

Foreign currency swaps exchange an initial principal amount in two currencies, agreeing to re-exchange the currencies at a future date, at an agreed upon exchange rate. There may also be a periodic exchange of payments at specified intervals based on the agreed upon rates and notional amounts. Foreign currency swaps are used primarily in the consolidated VIEs in our Aflac Japan portfolio to convert foreign denominated cash flows to yen, the functional currency of Aflac Japan, in order to minimize cash flow fluctuations.

Credit Risk Assumed through Derivatives

Our exposure to credit risk in the event of nonperformance by counterparties to our interest rate swaps associated with our variable interest rate Uridashi notes as of June 30, 2011, was immaterial. For the interest rate, foreign currency, and credit default swaps associated with our VIE investments for which we are the primary beneficiary, we do not bear the risk of loss for counterparty default. We are not a direct counterparty to those contracts.

As a result of consolidation of certain VIE investments on January 1, 2010, we began recognizing related credit default swaps that assume credit risk from an asset pool. Those consolidated VIEs will receive periodic payments based on an agreed upon rate and notional amount and will only make a payment by delivery of associated collateral, which consists of highly rated asset-backed securities, if there is a credit event. A credit event payment will typically be equal to the notional value of the swap contract less the value of the referenced obligations. A credit event is generally defined as a default on contractually obligated interest or principal payments or bankruptcy of the referenced entity. The credit default swaps in which the consolidated VIE assumes credit risk primarily reference investment grade baskets. The diversified portfolios of corporate issuers are established within sector concentration limits.

The following tables present the maximum potential risk, fair value, weighted-average years to maturity, and underlying referenced credit obligation type for credit default swaps.

	June 30, 2011
	Less than one year				One to three years				Three to five years						Five to ten years						Total
(In millions)	Maximum potential risk		Estimated fair value		Maximum potential risk		Estimated fair value		Maximum potential risk			Estimated fair value			Maximum potential risk			Estimated fair value			Maximum potential risk			Estimated fair value
Index exposure:
Corporate bonds	$	0	$	0	$	0	$	0	$	(141	)	$	(11	)	$	(418	)	$	(242	)	$	(559	)	$	(253	)

	December 31, 2010
	Less than one year				One to three years				Three to five years						Five to ten years						Total
(In millions)	Maximum potential risk		Estimated fair value		Maximum potential risk		Estimated fair value		Maximum potential risk			Estimated fair value			Maximum potential risk			Estimated fair value			Maximum potential risk			Estimated fair value
Index exposure:
Corporate bonds	$	0	$	0	$	0	$	0	$	(340	)	$	(118	)	$	(416	)	$	(225	)	$	(756	)	$	(343	)

Derivative Balance Sheet Classification

The tables below summarize the balance sheet classification of our derivative fair value amounts, as well as the gross asset and liability fair value amounts. The fair value amounts presented do not include income accruals. The notional amount of derivative contracts represents the basis upon which pay or receive amounts are calculated. Notional amounts are not reflective of credit risk.

	June 30, 2011
(In millions)	Net Derivatives					Asset Derivatives		Liability Derivatives
Hedge Designation/ Derivative Type	Notional Amount		Fair Value			Fair Value		Fair Value
Cash flow hedges:
Interest rate swaps	$	248	$	(1)		$	0	$	(1)
Foreign currency swaps		575		71			94		(23)
Total cash flow hedges		823		70			94		(24)
Non-qualifying strategies:
Interest rate swaps		546		121			125		(4)
Foreign currency swaps		3,927		(27)			276		(303)
Credit default swaps		559		(253)			0		(253)
Total non-qualifying strategies		5,032		(159)			401		(560)
Total cash flow hedges and non-qualifying strategies	$	5,855	$	(89)		$	495	$	(584)
Balance Sheet Location
Other assets	$	2,267	$	495		$	495	$	0
Other liabilities		3,588		(584)			0		(584)
Total derivatives	$	5,855	$	(89)		$	495	$	(584)
	December 31, 2010
(In millions)	Net Derivatives					Asset Derivatives		Liability Derivatives
Hedge Designation/ Derivative Type	Notional Amount		Fair Value			Fair Value		Fair Value
Cash flow hedges:
Interest rate swaps	$	245	$	(2)		$	0	$	(2)
Foreign currency swaps		615		170			180		(10)
Total cash flow hedges		860		168			180		(12)
Non-qualifying strategies:
Interest rate swaps		743		56			124		(68)
Foreign currency swaps		3,815		(58)			260		(318)
Credit default swaps		756		(343)			0		(343)
Total non-qualifying strategies		5,314		(345)			384		(729)
Total cash flow hedges and non-qualifying strategies	$	6,174	$	(177)		$	564	$	(741)
Balance Sheet Location
Other assets	$	2,364	$	564		$	564	$	0
Other liabilities		3,810		(741	)		0		(741	)
Total derivatives	$	6,174	$	(177	)	$	564	$	(741	)

Hedging

Certain of our consolidated VIEs have interest rate and/or foreign currency swaps that qualify for hedge accounting treatment. For those that have qualified, we have designated the derivative as a hedge of the variability in cash flows of a forecasted transaction or of amounts to be received or paid related to a recognized asset (“cash flow” hedge). We expect to continue this hedging activity for a weighted-average period of approximately 25 years. The remaining derivatives in our consolidated VIEs that have not qualified for hedge accounting have been designated as held for other investment purposes (“non-qualifying strategies”).

We have interest rate swap agreements related to our 20 billion yen variable interest rate Uridashi notes that will mature in September 2011 and our 5.5 billion yen variable interest rate Samurai notes that we issued subsequent to the end of the second quarter in July 2011 (see Note 6). By entering into these contracts, we swapped the variable interest rate to a fixed interest rate of 1.52% for the Uridashi notes and 1.475% for the Samurai notes. We have designated these interest rate swaps as a hedge of the variability in our interest cash flows associated with the respective variable interest rate notes. The notional amounts and terms of the swaps match the principal amount and terms of the corresponding variable interest rate notes, and the swaps had no value at inception. Changes in the fair value of the swap contracts are recorded in other comprehensive income so long as the hedge is deemed effective. Should any portion of the hedge be deemed ineffective, that value would be reported in net earnings.

Hedge Documentation and Effectiveness Testing

To qualify for hedge accounting treatment, a derivative must be highly effective in mitigating the designated changes in cash flow of the hedged item. At hedge inception, we formally document all relationships between hedging instruments and hedged items, as well as our risk-management objective and strategy for undertaking each hedge transaction. The documentation process includes linking derivatives that are designated as cash flow hedges to specific assets or liabilities on the statement of financial position or to specific forecasted transactions and defining the effectiveness and ineffectiveness testing methods to be used. At the hedge's inception and on an ongoing quarterly basis, we also formally assess whether the derivatives that are used in hedging transactions have been and are expected to continue to be highly effective in offsetting changes in cash flows of hedged items. Hedge effectiveness is assessed using qualitative and quantitative methods. Qualitative methods may include the comparison of critical terms of the derivative to the hedged item. Quantitative methods include regression or other statistical analysis of changes in cash flows associated with the hedge relationship. Hedge ineffectiveness of the hedge relationships is measured each reporting period using the “Hypothetical Derivative Method.”

For derivative instruments that are designated and qualify as cash flow hedges, the effective portion of the gain or loss on the derivative is reported as a component of other comprehensive income and reclassified into earnings in the same period or periods during which the hedged transaction affects earnings. Gains and losses on the derivative representing hedge ineffectiveness are recognized in current earnings as a component of realized investment gains (losses). All components of each derivative’s gain or loss were included in the assessment of hedge effectiveness.

Discontinuance of Hedge Accounting

We discontinue hedge accounting prospectively when (1) it is determined that the derivative is no longer highly effective in offsetting changes in the cash flows of a hedged item; (2) the derivative is de-designated as a hedging instrument; or (3) the derivative expires or is sold, terminated or exercised.

When hedge accounting is discontinued on a cash-flow hedge, including those where the derivative is sold, terminated or exercised, amounts previously deferred in other comprehensive income are reclassified into earnings when earnings are impacted by the cash flow of the hedged item.

Cash Flow Hedges

The following tables present the components of the gain or loss on derivatives that qualify as cash flow hedges:

Derivatives in Cash Flow Hedging Relationships

(In millions)	Gain (Loss) Recognized in Other Comprehensive Income on  Derivative (Effective Portion)					Net Realized Investment Gains (Losses) Recognized in Income on Derivative (Ineffective Portion)
	Three Months Ended June 30, 2011		Six Months Ended June 30, 2011			Three Months Ended June 30, 2011		Six Months Ended June 30, 2011
Interest rate swaps	$	0	$	1		$	0	$	0
Foreign currency swaps		17		(39	)		2		(2	)
Total	$	17	$	(38	)	$	2	$	(2	)

Derivatives in Cash Flow Hedging Relationships

(In millions)	Gain (Loss) Recognized in Other Comprehensive Income on  Derivative (Effective Portion)					Net Realized Investment Gains (Losses) Recognized in Income on Derivative (Ineffective Portion)
	Three Months Ended June 30, 2010		Six Months Ended June 30, 2010			Three Months Ended June 30, 2010		Six Months Ended June 30, 2010
Interest rate swaps	$	0	$	1		$	0	$	0
Foreign currency swaps		8		(3	)		3		0
Total	$	8	$	(2	)	$	3	$	0

There was no gain or loss reclassified from accumulated other comprehensive income into earnings related to our cash flow hedges for the three- and six-month periods ended June 30, 2011 and 2010. As of June 30, 2011, pretax deferred net gains on derivative instruments recorded in accumulated other comprehensive income that are expected to be reclassified to earnings during the next twelve months are immaterial.

Non-qualifying Strategies

For our derivative instruments in consolidated VIEs that do not qualify for hedge accounting treatment, all changes in their fair value are reported in current period earnings as net realized investment gains (losses). The following table presents the gain or loss recognized in income on non-qualifying strategies:

Non-qualifying Strategies

Gain (Loss) Recognized within Net Realized Investment Gains (Losses)

(In millions)	Three Months Ended June 30, 2011			Six Months Ended June 30, 2011
Interest rate swaps	$	4		$	(1	)
Foreign currency swaps		3			(26	)
Credit default swaps		(43	)		(38	)
Other		9			12
Total	$	(27	)	$	(53	)

Non-qualifying Strategies

Gain (Loss) Recognized within Net Realized Investment Gains (Losses)

(In millions)	Three Months Ended June 30, 2010			Six Months Ended June 30, 2010
Interest rate swaps	$	8		$	3
Foreign currency swaps		(48	)		(44	)
Credit default swaps		(66	)		(45	)
Total	$	(106	)	$	(86	)

The amount of gain or loss recognized in earnings for our VIEs is attributable to the derivatives in those investment structures. While the change in value of the swaps is recorded through current period earnings, the change in value of the available-for-sale fixed income or perpetual securities associated with these swaps is recorded through other comprehensive income.

Nonderivative Hedges

Our primary exposure to be hedged is our net investment in Aflac Japan, which is affected by changes in the yen/dollar exchange rate. To mitigate this exposure, we have taken the following courses of action. First, Aflac Japan maintains an investment portfolio of dollar-denominated securities on behalf of Aflac U.S., which serves as an economic currency hedge of a portion of our investment in Aflac Japan. The functional currency for these investments is the U.S. dollar. The related investment income and realized/unrealized investment gains and losses are also denominated in U.S. dollars. The foreign exchange gains and losses related to this portfolio are taxable in Japan and the U.S. when the securities mature or are sold. Until maturity or sale, deferred tax expense or benefit associated with the foreign exchange gains or losses are recognized in other comprehensive income.

Second, we have designated the Parent Company’s yen-denominated liabilities (Samurai and Uridashi notes and yen-denominated loans - see Note 6) as nonderivative hedges of the foreign currency exposure of our investment in Aflac Japan. Our net investment hedge was effective during the six-month periods ended June 30, 2011, and 2010; therefore, there was no impact on net earnings during those periods for the foreign exchange effect of the designated Parent Company yen-denominated liabilities. There was no gain or loss reclassified from accumulated other comprehensive income into earnings related to our net investment hedge for the six-month periods ended June 30, 2011 and 2010.

For additional information on our financial instruments, see the accompanying Notes 1, 3 and 5 and Notes 1, 3 and 5 of the Notes to the Consolidated Financial Statements in our annual report to shareholders for the year ended December 31, 2010.

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DERIVATIVE INSTRUMENTS (Tables)

6 Months Ended

Jun. 30, 2011

Maximum Potential Risk, Fair Value, Weighted Average Years to Maturity, and Underlying Referenced Credit Obligation Type for Credit Derivatives

The following tables present the maximum potential risk, fair value, weighted-average years to maturity, and underlying referenced credit obligation type for credit default swaps.

	June 30, 2011
	Less than one year				One to three years				Three to five years						Five to ten years						Total
(In millions)	Maximum potential risk		Estimated fair value		Maximum potential risk		Estimated fair value		Maximum potential risk			Estimated fair value			Maximum potential risk			Estimated fair value			Maximum potential risk			Estimated fair value
Index exposure:
Corporate bonds	$	0	$	0	$	0	$	0	$	(141	)	$	(11	)	$	(418	)	$	(242	)	$	(559	)	$	(253	)

	December 31, 2010
	Less than one year				One to three years				Three to five years						Five to ten years						Total
(In millions)	Maximum potential risk		Estimated fair value		Maximum potential risk		Estimated fair value		Maximum potential risk			Estimated fair value			Maximum potential risk			Estimated fair value			Maximum potential risk			Estimated fair value
Index exposure:
Corporate bonds	$	0	$	0	$	0	$	0	$	(340	)	$	(118	)	$	(416	)	$	(225	)	$	(756	)	$	(343	)

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value

The tables below summarize the balance sheet classification of our derivative fair value amounts, as well as the gross asset and liability fair value amounts. The fair value amounts presented do not include income accruals. The notional amount of derivative contracts represents the basis upon which pay or receive amounts are calculated. Notional amounts are not reflective of credit risk.

	June 30, 2011
(In millions)	Net Derivatives					Asset Derivatives		Liability Derivatives
Hedge Designation/ Derivative Type	Notional Amount		Fair Value			Fair Value		Fair Value
Cash flow hedges:
Interest rate swaps	$	248	$	(1)		$	0	$	(1)
Foreign currency swaps		575		71			94		(23)
Total cash flow hedges		823		70			94		(24)
Non-qualifying strategies:
Interest rate swaps		546		121			125		(4)
Foreign currency swaps		3,927		(27)			276		(303)
Credit default swaps		559		(253)			0		(253)
Total non-qualifying strategies		5,032		(159)			401		(560)
Total cash flow hedges and non-qualifying strategies	$	5,855	$	(89)		$	495	$	(584)
Balance Sheet Location
Other assets	$	2,267	$	495		$	495	$	0
Other liabilities		3,588		(584)			0		(584)
Total derivatives	$	5,855	$	(89)		$	495	$	(584)
	December 31, 2010
(In millions)	Net Derivatives					Asset Derivatives		Liability Derivatives
Hedge Designation/ Derivative Type	Notional Amount		Fair Value			Fair Value		Fair Value
Cash flow hedges:
Interest rate swaps	$	245	$	(2)		$	0	$	(2)
Foreign currency swaps		615		170			180		(10)
Total cash flow hedges		860		168			180		(12)
Non-qualifying strategies:
Interest rate swaps		743		56			124		(68)
Foreign currency swaps		3,815		(58)			260		(318)
Credit default swaps		756		(343)			0		(343)
Total non-qualifying strategies		5,314		(345)			384		(729)
Total cash flow hedges and non-qualifying strategies	$	6,174	$	(177)		$	564	$	(741)
Balance Sheet Location
Other assets	$	2,364	$	564		$	564	$	0
Other liabilities		3,810		(741	)		0		(741	)
Total derivatives	$	6,174	$	(177	)	$	564	$	(741	)

Cash Flow Hedges Gains (Losses) Recognized in Other Comprehensive Income and Income

The following tables present the components of the gain or loss on derivatives that qualify as cash flow hedges:

Derivatives in Cash Flow Hedging Relationships

(In millions)	Gain (Loss) Recognized in Other Comprehensive Income on  Derivative (Effective Portion)					Net Realized Investment Gains (Losses) Recognized in Income on Derivative (Ineffective Portion)
	Three Months Ended June 30, 2011		Six Months Ended June 30, 2011			Three Months Ended June 30, 2011		Six Months Ended June 30, 2011
Interest rate swaps	$	0	$	1		$	0	$	0
Foreign currency swaps		17		(39	)		2		(2	)
Total	$	17	$	(38	)	$	2	$	(2	)

Derivatives in Cash Flow Hedging Relationships

(In millions)	Gain (Loss) Recognized in Other Comprehensive Income on  Derivative (Effective Portion)					Net Realized Investment Gains (Losses) Recognized in Income on Derivative (Ineffective Portion)
	Three Months Ended June 30, 2010		Six Months Ended June 30, 2010			Three Months Ended June 30, 2010		Six Months Ended June 30, 2010
Interest rate swaps	$	0	$	1		$	0	$	0
Foreign currency swaps		8		(3	)		3		0
Total	$	8	$	(2	)	$	3	$	0

Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location

The following table presents the gain or loss recognized in income on non-qualifying strategies:

Non-qualifying Strategies

Gain (Loss) Recognized within Net Realized Investment Gains (Losses)

(In millions)	Three Months Ended June 30, 2011			Six Months Ended June 30, 2011
Interest rate swaps	$	4		$	(1	)
Foreign currency swaps		3			(26	)
Credit default swaps		(43	)		(38	)
Other		9			12
Total	$	(27	)	$	(53	)

Non-qualifying Strategies

Gain (Loss) Recognized within Net Realized Investment Gains (Losses)

(In millions)	Three Months Ended June 30, 2010			Six Months Ended June 30, 2010
Interest rate swaps	$	8		$	3
Foreign currency swaps		(48	)		(44	)
Credit default swaps		(66	)		(45	)
Total	$	(106	)	$	(86	)

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BENEFIT PLANS - Additional Information (Detail) (Japanese Pension Plan, USD $) In Millions	6 Months Ended
	Jun. 30, 2011
Japanese Pension Plan
Employee Benefits Disclosure [Line Items]
Contribution to the Japanese pension plan	$ 11

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Stock Options Outstanding and Exercisable (Detail) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2011 Year
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding - Stock Option Shares	14,608
Options Outstanding - Weighted-Average Remaining Term	5.3
Options Outstanding - Aggregate Intrinsic Value	$ 97
Options Outstanding - Weighted-Average Exercise Price Per Share	$ 42.51
Options Exercisable - Stock Option Shares	11,197
Options Exercisable - Weighted-Average Remaining Term	4.3
Options Exercisable - Aggregate Intrinsic Value	$ 66
Options Exercisable - Weighted-Average Exercise Price Per Share	$ 42.93

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Summary of Credit-Related Impairment Losses on Other-Than-Temporarily-Impaired Securities With Bifurcated Losses (Detail) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Schedule of Investments [Line Items]
Cumulative credit loss impairments, beginning of period	$ 4	$ 23	$ 13	$ 24
Securities sold during period	0	(10)	(9)	(11)
Cumulative credit loss impairments, end of period	$ 4	$ 13	$ 4	$ 13

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Operations by Segment - Assets (Detail) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 106,232	$ 101,039
Aflac Japan
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	92,290	87,061
Aflac U.S.
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	13,208	13,095
Other business segments
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	162	155
Total Business Segments
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	105,660	100,311
Corporate
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	14,950	14,047
Intercompany eliminations
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ (14,378)	$ (13,319)

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Consolidated Statements of Shareholders' Equity (USD $) In Millions	Total	Common stock:	Additional paid-in capital:	Retained earnings:	Accumulated other comprehensive income (loss):	Treasury stock:
Balance, beginning of period at Dec. 31, 2009		$ 66	$ 1,228	$ 12,410	$ 29	$ (5,316)
Unrealized foreign currency translation gains (losses) during period, net of income taxes:
Cumulative effect of change in accounting principle, net of income taxes					(320)
Change in unrealized foreign currency translation gains (losses) during period, net of income taxes					143
Cumulative effect of change in accounting principle, net of income taxes				(25)
Exercise of stock options			32
Purchases of treasury stock						(5)
Unrealized gains (losses) on investment securities during period, net of income taxes and reclassification adjustments:
Cumulative effect of change in accounting principle, net of income taxes					180
Change in unrealized gains (losses) on investment securities not other-than-temporarily impaired, net of income taxes					587
Change in unrealized gains (losses) on other-than-temporarily impaired investment securities, net of income taxes					10
Net earnings	1,217			1,217
Share-based compensation			17
Cost of shares issued						45
Unrealized gains (losses) on derivatives during period, net of income taxes					(1)
Dividends to shareholders				(262)
Gain (loss) on treasury stock reissued			(6)
Pension liability adjustment during period, net of income taxes					1
Balance, end of period at Jun. 30, 2010	10,030	66	1,271	13,340	629	(5,276)
Balance, beginning of period at Dec. 31, 2010	11,056	66	1,320	14,194	862	(5,386)
Unrealized foreign currency translation gains (losses) during period, net of income taxes:
Cumulative effect of change in accounting principle, net of income taxes					0
Change in unrealized foreign currency translation gains (losses) during period, net of income taxes					(12)
Cumulative effect of change in accounting principle, net of income taxes				0
Exercise of stock options			15
Purchases of treasury stock						(231)
Unrealized gains (losses) on investment securities during period, net of income taxes and reclassification adjustments:
Cumulative effect of change in accounting principle, net of income taxes					0
Change in unrealized gains (losses) on investment securities not other-than-temporarily impaired, net of income taxes					716
Change in unrealized gains (losses) on other-than-temporarily impaired investment securities, net of income taxes					3
Net earnings	674			674
Share-based compensation			18
Cost of shares issued						26
Unrealized gains (losses) on derivatives during period, net of income taxes					(25)
Dividends to shareholders				(281)
Gain (loss) on treasury stock reissued			19
Pension liability adjustment during period, net of income taxes					3
Balance, end of period at Jun. 30, 2011	$ 11,981	$ 66	$ 1,372	$ 14,587	$ 1,547	$ (5,591)

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FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2011

Fair Value Hierarchy, Assets and Liabilities Measured on Recurring Basis

The following tables present the fair value hierarchy levels of the Company’s assets and liabilities that are measured at fair value on a recurring basis.

	June 30, 2011
(In millions)	Level 1		Level 2		Level 3		Total
Assets:
Fixed maturities:
Government and agencies	$	19,189	$	678	$	0	$	19,867
Municipalities		0		1,025		0		1,025
Mortgage- and asset-backed securities		0		1,241		257		1,498
Public utilities		0		5,584		0		5,584
Collateralized debt obligations		0		0		4		4
Sovereign and supranational		0		2,277		0		2,277
Banks/financial institutions		0		7,518		398		7,916
Other corporate		0		14,335		0		14,335
Total fixed maturities		19,189		32,658		659		52,506
Perpetual securities:
Banks/financial institutions		0		6,746		0		6,746
Other corporate		0		357		0		357
Total perpetual securities		0		7,103		0		7,103
Equity securities		14		5		4		23
Other assets:
Interest rate swaps		0		125		0		125
Foreign currency swaps		0		150		220		370
Total other assets		0		275		220		495
Total assets	$	19,203	$	40,041	$	883	$	60,127
Liabilities:
Interest rate swaps	$	0	$	5	$	0	$	5
Foreign currency swaps		0		270		56		326
Credit default swaps		0		0		253		253
Total liabilities	$	0	$	275	$	309	$	584

	December 31, 2010
(In millions)	Level 1		Level 2		Level 3		Total
Assets:
Fixed maturities:
Government and agencies	$	16,534	$	679	$	0	$	17,213
Municipalities		0		973		0		973
Mortgage- and asset-backed securities		0		1,539		267		1,806
Public utilities		0		5,369		0		5,369
Collateralized debt obligations		0		0		5		5
Sovereign and supranational		0		1,394		0		1,394
Banks/financial institutions		0		8,047		386		8,433
Other corporate		0		13,162		0		13,162
Total fixed maturities		16,534		31,163		658		48,355
Perpetual securities:
Banks/financial institutions		0		7,169		0		7,169
Other corporate		0		343		0		343
Total perpetual securities		0		7,512		0		7,512
Equity securities		14		5		4		23
Other assets:
Interest rate swaps		0		124		0		124
Foreign currency swaps		0		151		289		440
Total other assets		0		275		289		564
Total assets	$	16,548	$	38,955	$	951	$	56,454
Liabilities:
Interest rate swaps	$	0	$	70	$	0	$	70
Foreign currency swaps		0		280		48		328
Credit default swaps		0		0		343		343
Total liabilities	$	0	$	350	$	391	$	741

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation

The following tables present the changes in our available-for-sale investments and derivatives classified as Level 3.

Three Months Ended June 30, 2011
	Fixed Maturities															Perpetual Securities		Equity Securities		Derivatives
(In millions)	Mortgage- and Asset- Backed Securities			Public Utilities		Collateralized Debt Obligations			Sovereign and Supranational		Banks/ Financial Institutions			Other Corporate		Banks/ Financial Institutions				Foreign Currency Swaps		Credit Default Swaps			Total
Balance, beginning of period	$	248		$	0	$	5		$	0	$	420		$	0	$	0	$	4	$	126	$	(338	)	$	465
Realized gains or losses included in earnings		0			0		(1	)		0		0			0		0		0		25		(43	)		(19	)
Unrealized gains or losses included in other comprehensive income		12			0		0			0		(22	)		0		0		0		13		0			3
Purchases, issuances, sales and settlements:
Purchases		0			0		0			0		0			0		0		0		0		0			0
Issuances		0			0		0			0		0			0		0		0		0		0			0
Sales		0			0		0			0		0			0		0		0		0		0			0
Settlements		(3	)		0		0			0		0			0		0		0		0		128			125
Transfers into Level 3		0			0		0			0		0			0		0		0		0		0			0
Transfers out of Level 3		0			0		0			0		0			0		0		0		0		0			0
Balance, end of period	$	257		$	0	$	4		$	0	$	398		$	0	$	0	$	4	$	164	$	(253	)	$	574
Change in unrealized gains (losses) still held(1)	$	0		$	0	$	(1	)	$	0	$	0		$	0	$	0	$	0	$	25	$	(7	)	$	17

⁽¹⁾  Represents the amount of total gains or losses for the period, included in earnings, attributable to the change in unrealized gains (losses) relating to assets classified as Level 3 that were still held at June 30, 2011

Three Months Ended June 30, 2010
	Fixed Maturities																	Perpetual Securities			Equity Securities			Derivatives
(In millions)	Mortgage- and asset- backed securities			Public utilities			Collateralized debt obligations		Sovereign and supranational			Banks/ financial institutions			Other corporate			Banks/ financial institutions						Credit default swaps			Total
Balance, beginning of period	$	63		$	488		$	4	$	298		$	1,103		$	1,253		$	1,695		$	9		$	(291	)	$	4,622
Realized gains or losses included in earnings		0			0			0		0			0			0			125			0			(66	)		59
Unrealized gains or losses included in other comprehensive income		1			0			0		0			1			1			(125	)		0			0			(122	)
Purchases, issuances, sales and settlements:
Purchases		0			0			0		0			0			0			0			0			0			0
Issuances		0			0			0		0			0			0			0			0			0			0
Sales		(1	)		(2	)		0		0			0			0			(531	)		0			0			(534	)
Settlements		0			0			0		0			0			0			0			0			0			0
Transfers into Level 3(1)		219			0			0		0			330			0			0			0			0			549
Transfers out of Level 3(2)		0			(459	)		0		(298	)		(1,082	)		(1,202	)		(1,164	)		(5	)		0			(4,210	)
Balance, end of period	$	282		$	27		$	4	$	0		$	352		$	52		$	0		$	4		$	(357	)	$	364
Change in unrealized gains (losses) still held(3)	$	0		$	0		$	0	$	0		$	0		$	0		$	0		$	0		$	(66	)	$	(66	)

⁽¹⁾  Due to a lack of visibility to observe significant inputs to price and credit downgrades of respective issuers of securities to below investment grade

⁽²⁾  A result of changing our pricing methodology to using a pricing index for estimating fair value instead of obtaining pricing of the securities from brokers or arrangers

⁽³⁾ Represents the amount of total gains or losses for the period, included in earnings, attributable to the change in unrealized gains (losses) relating to assets classified as Level 3 that were still held at June 30, 2010

Six Months Ended June 30, 2011
	Fixed Maturities														Perpetual Securities		Equity Securities		Derivatives
(In millions)	Mortgage- and Asset- Backed Securities			Public Utilities		Collateralized Debt Obligations			Sovereign and Supranational		Banks/ Financial Institutions		Other Corporate		Banks/ Financial Institutions				Foreign Currency Swaps			Credit Default Swaps			Total
Balance, beginning of period	$	267		$	0	$	5		$	0	$	386	$	0	$	0	$	4	$	241		$	(343	)	$	560
Realized gains or losses included in earnings		(6	)		0		(1	)		0		1		0		0		0		(39	)		(38	)		(83	)
Unrealized gains or losses included in other comprehensive income		2			0		0			0		11		0		0		0		(38	)		0			(25	)
Purchases, issuances, sales and settlements:
Purchases		0			0		0			0		0		0		0		0		0			0			0
Issuances		0			0		0			0		0		0		0		0		0			0			0
Sales		0			0		0			0		0		0		0		0		0			0			0
Settlements		(6	)		0		0			0		0		0		0		0		0			128			122
Transfers into Level 3		0			0		0			0		0		0		0		0		0			0			0
Transfers out of Level 3		0			0		0			0		0		0		0		0		0			0			0
Balance, end of period	$	257		$	0	$	4		$	0	$	398	$	0	$	0	$	4	$	164		$	(253	)	$	574
Change in unrealized gains (losses) still held(1)	$	(6	)	$	0	$	(1	)	$	0	$	1	$	0	$	0	$	0	$	(39	)	$	(15	)	$	(60	)

⁽¹⁾  Represents the amount of total gains or losses for the period, included in earnings, attributable to the change in unrealized gains (losses) relating to assets classified as Level 3 that were still held at June 30, 2011

Six Months Ended June 30, 2010
	Fixed Maturities																		Perpetual Securities			Equity Securities			Derivatives
(In millions)	Mortgage- and asset- backed securities			Public utilities			Collateralized debt obligations			Sovereign and supranational			Banks/ financial institutions			Other corporate			Banks/ financial institutions						Credit default swaps			Total
Balance, beginning of period	$	62		$	497		$	267		$	293		$	1,240		$	1,248		$	1,441		$	9		$	0		$	5,057
Effect of change in accounting principle (1)		0			0			(263	)		0			0			0			0			0			(312	)		(575	)
Revised balance, beginning of period		62			497			4			293			1,240			1,248			1,441			9			(312	)		4,482
Realized gains or losses included in earnings		0			0			0			0			5			0			108			0			(45	)		68
Unrealized gains or losses included in other comprehensive income		2			(9	)		0			5			34			6			51			0			0			89
Purchases, issuances, sales and settlements:
Purchases		0			0			0			0			0			0			0			0			0			0
Issuances		0			0			0			0			0			0			0			0			0			0
Sales		(1	)		(2	)		0			0			(175	)		0			(585	)		0			0			(763	)
Settlements		0			0			0			0			0			0			0			0			0			0
Transfers into Level 3(2)		219			0			0			0			330			0			149			0			0			698
Transfers out of Level 3(3)		0			(459	)		0			(298	)		(1,082	)		(1,202	)		(1,164	)		(5	)		0			(4,210	)
Balance, end of period	$	282		$	27		$	4		$	0		$	352		$	52		$	0		$	4		$	(357	)	$	364
Change in unrealized gains (losses) still held(4)	$	0		$	0		$	0		$	0		$	0		$	0		$	0		$	0		$	(45	)	$	(45	)

⁽¹⁾  Change in accounting for VIEs effective January 1, 2010. See Notes 1, 3, and 4 for additional information.

⁽²⁾  Due to a lack of visibility to observe significant inputs to price and credit downgrades of respective issuers of securities to below investment grade

⁽³⁾  A result of changing our pricing methodology to using a pricing index for estimating fair value instead of obtaining pricing of the securities from brokers or arrangers

⁽⁴⁾ Represents the amount of total gains or losses for the period, included in earnings, attributable to the change in unrealized gains (losses) relating to assets classified as Level 3 that were still held at June 30, 2010

Carrying Value and Fair Value of Financial Instruments Disclosure

The carrying values and estimated fair values of the Company’s financial instruments were as follows:

	June 30, 2011				December 31, 2010
(In millions)	Carrying Value		Fair Value		Carrying Value		Fair Value
Assets:
Fixed-maturity securities	$	78,669	$	78,785	$	72,570	$	72,999
Fixed-maturity securities - consolidated variable interest entities		5,745		5,703		5,869		5,825
Perpetual securities		5,559		5,559		5,974		5,974
Perpetual securities - consolidated variable interest entities		1,544		1,544		1,538		1,538
Equity securities		23		23		23		23
Interest rate, foreign currency, and credit default swaps		495		495		564		564
Liabilities:
Notes payable (excluding capitalized leases)		3,042		3,283		3,032		3,248
Interest rate, foreign currency, and credit default swaps		584		584		741		741
Obligation to Japanese policyholder protection corporation		89		89		108		108

Discounted Cash Flow Pricing Model Sensitivity Analysis

The estimated effect of potential changes in interest rates, credit spreads and interest rate volatility on these fair values as of such date is as follows:

Interest Rates				Credit Spreads				Interest Rate Volatility
Factor change	Change in fair value   (in millions)			Factor change	Change in fair value   (in millions)			Factor change	Change in fair value   (in millions)
+50 bps		$(1,069	)	+50 bps		$(1,054	)	+50 %		$(248	)
-50 bps		1,140		-50 bps		1,122		-50 %		33

The fair values of our held-to-maturity fixed-maturity securities valued by our DCF pricing model totaled $27.2 billion at June 30, 2011. The estimated effect of potential changes in interest rates, credit spreads and interest rate volatility on these fair values as of such date is as follows:

Interest Rates				Credit Spreads				Interest Rate Volatility
Factor change	Change in fair value   (in millions)			Factor change	Change in fair value   (in millions)			Factor change	Change in fair value   (in millions)
+50 bps		$ (1,696	)	+50 bps		$(1,557	)	+50 %		$(385	)
-50 bps		1,747		-50 bps		1,572		-50 %		357

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Investments in Variable Interest Entities (Detail) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Variable Interest Entity, Consolidated
Schedule of Equity Method Investments [Line Items]
Amortized Cost	$ 7,104	$ 7,201
Fair value	7,247	7,363
Collateralized Debt Obligations | Variable Interest Entity, Not Consolidated
Schedule of Equity Method Investments [Line Items]
Amortized Cost	4	5
Fair value	4	5
Variable Interest Entity, Not Consolidated
Schedule of Equity Method Investments [Line Items]
Amortized Cost	13,048	13,919
Fair value	13,195	13,219
Variable Interest Entity, Not Consolidated | Other Debt and Perpetual Securities
Schedule of Equity Method Investments [Line Items]
Amortized Cost	13,044	13,914
Fair value	13,191	13,214
Variable Interest Entities
Schedule of Equity Method Investments [Line Items]
Amortized Cost	20,152	21,120
Fair value	$ 20,442	$ 20,582

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SHAREHOLDERS' EQUITY (Tables)

6 Months Ended

Jun. 30, 2011

Schedule of Capital Units

The following table is a reconciliation of the number of shares of the Company’s common stock for the six-month periods ended June 30.

(In thousands of shares)	2011			2010
Common stock - issued:
Balance, beginning of period		662,660			661,209
Exercise of stock options and issuance of restricted shares		752			672
Balance, end of period		663,412			661,881
Treasury stock:
Balance, beginning of period		192,999			192,641
Purchases of treasury stock:
Open market		4,100			0
Other		155			95
Dispositions of treasury stock:
Shares issued to AFL Stock Plan		(745	)		0
Exercise of stock options		(85	)		(1,535	)
Other		(79	)		(89	)
Balance, end of period		196,345			191,112
Shares outstanding, end of period		467,067			470,769

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following table presents the approximate number of share-based awards to purchase shares, on a weighted-average basis, that were considered to be anti-dilutive and were excluded from the calculation of diluted earnings per share for the following periods.

	Three Months Ended June 30,				Six Months Ended June 30,
(In thousands)	2011		2010		2011		2010
Anti-dilutive share-based awards		4,246		4,610		3,419		3,530

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Consolidated Statements of Comprehensive Income (Loss) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Net earnings	$ 280	$ 581	$ 674	$ 1,217
Other comprehensive income (loss) before income taxes:
Unrealized foreign currency translation gains (losses) during period	(82)	61	(86)	43
Unrealized gains (losses) on investment securities:
Unrealized holding gains (losses) on investment securities during period	473	555	(136)	878
Reclassification adjustment for realized (gains) losses on investment securities included in net earnings	716	(14)	1,243	49
Unrealized gains (losses) on derivatives during period	17	8	(38)	(2)
Pension liability adjustment during period	0	0	4	2
Total other comprehensive income (loss) before income taxes	1,124	610	987	970
Income tax expense (benefit) related to items of other comprehensive income (loss)	292	74	302	230
Other comprehensive income (loss), net of income taxes	832	536	685	740
Total comprehensive income (loss)	$ 1,112	$ 1,117	$ 1,359	$ 1,957

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BENEFIT PLANS

6 Months Ended

Jun. 30, 2011

BENEFIT PLANS

9.  BENEFIT PLANS

Our basic employee defined-benefit pension plans cover substantially all of our full-time employees in Japan and the United States. The components of retirement expense for the Japanese and U.S. pension plans were as follows:

	Three Months Ended June 30,								Six Months Ended June 30,
	2011				2010				2011				2010
(In millions)	Japan		U.S.		Japan		U.S.		Japan		U.S.		Japan		U.S.
Components of net periodic benefit cost:
Service cost	$	4	$	3	$	4	$	3	$	8	$	7	$	7	$	6
Interest cost		2		4		1		4		3		8		2		7
Expected return on plan assets		(1)		(3)		0		(3)		(2)		(7)		(1)		(6)
Amortization of net actuarial loss		1		2		0		1		2		3		1		2
Net periodic benefit cost	$	6	$	6	$	5	$	5	$	11	$	11	$	9	$	9

During the six months ended June 30, 2011, Aflac Japan contributed approximately $11 million (using the June 30, 2011, exchange rate) to the Japanese pension plan, and Aflac U.S. did not make a contribution to the U.S. pension plan.

For additional information regarding our Japanese and U.S. benefit plans, see Note 13 of the Notes to the Consolidated Financial Statements in our annual report to shareholders for the year ended December 31, 2010.

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Estimated Effect of Potential Changes in Interest Rates, Credit Spreads and Interest Rate Volatility on Fair Values of Securities Priced by the Discounted Cash Flow Pricing Model (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2011
Interest Rates | Available-for-Sale Fixed Maturity and Perpetual Securities | Upward Movements
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Factor Change	0.50%
Change in fair value	$ (1,069)
Interest Rates | Available-for-Sale Fixed Maturity and Perpetual Securities | Downward Movements
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Factor Change	(0.50%)
Change in fair value	1,140
Credit Spreads | Available-for-Sale Fixed Maturity and Perpetual Securities | Upward Movements
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Factor Change	0.50%
Change in fair value	(1,054)
Credit Spreads | Available-for-Sale Fixed Maturity and Perpetual Securities | Downward Movements
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Factor Change	(0.50%)
Change in fair value	1,122
Interest Rate Volatility | Available-for-Sale Fixed Maturity and Perpetual Securities | Upward Movements
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Factor Change	50.00%
Change in fair value	(248)
Interest Rate Volatility | Available-for-Sale Fixed Maturity and Perpetual Securities | Downward Movements
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Factor Change	(50.00%)
Change in fair value	33
Interest Rates | Held-to-maturity Securities | Upward Movements
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Factor Change	0.50%
Change in fair value	(1,696)
Interest Rates | Held-to-maturity Securities | Downward Movements
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Factor Change	(0.50%)
Change in fair value	1,747
Credit Spreads | Held-to-maturity Securities | Upward Movements
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Factor Change	0.50%
Change in fair value	(1,557)
Credit Spreads | Held-to-maturity Securities | Downward Movements
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Factor Change	(0.50%)
Change in fair value	1,572
Interest Rate Volatility | Held-to-maturity Securities | Upward Movements
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Factor Change	50.00%
Change in fair value	(385)
Interest Rate Volatility | Held-to-maturity Securities | Downward Movements
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Factor Change	(50.00%)
Change in fair value	$ 357
Interest Rates
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Factor Change	0.50%
Credit Spreads
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Factor Change	0.50%
Interest Rate Volatility
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Factor Change	50.00%

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Reconciliation of the Number of Shares of Common Stock (Detail) In Thousands				6 Months Ended
	Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2010	Jun. 30, 2011 Common Stock	Jun. 30, 2010 Common Stock	Jun. 30, 2011 Treasury Stock	Jun. 30, 2010 Treasury Stock
Stockholders Equity Note [Line Items]
Balance, beginning of period	663,412	662,660		662,660	661,209
Exercise of stock options and issuance of restricted shares				752	672
Balance, end of period	663,412	662,660		663,412	661,881
Balance, beginning of period						192,999	192,641
Purchases of treasury stock:
Open market						4,100	0
Other						155	95
Dispositions of treasury stock:
Shares issued to AFL Stock Plan						(745)	0
Exercise of stock options						(85)	(1,535)
Other						(79)	(89)
Balance, end of period						196,345	191,112
Shares outstanding, end of period	467,067		470,769

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Economic Maturities of Investments in Perpetual Securities (Detail) (USD $) In Millions	Jun. 30, 2011
Aflac Japan
Investments Classified by Contractual Maturity Date [Line Items]
Due in one year or less	$ 435
Due after one year through five years	1,498
Due after five years through 10 years	838
Due after 10 years	4,311
Total perpetual securities available for sale	7,082
Due in one year or less	497
Due after one year through five years	1,555
Due after five years through 10 years	881
Due after 10 years	3,992
Total perpetual securities available for sale	6,925
Aflac U.S.
Investments Classified by Contractual Maturity Date [Line Items]
Due in one year or less	0
Due after one year through five years	5
Due after five years through 10 years	0
Due after 10 years	172
Total perpetual securities available for sale	177
Due in one year or less	0
Due after one year through five years	5
Due after five years through 10 years	0
Due after 10 years	173
Total perpetual securities available for sale	$ 178

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INVESTMENTS (Tables)

6 Months Ended

Jun. 30, 2011

Securities Available For Sale And Held To Maturity

The amortized cost for our investments in debt and perpetual securities, the cost for equity securities and the fair values of these investments are shown in the following tables.

	June 30, 2011
(In millions)	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair   Value
Securities available for sale,   carried at fair value:
Fixed maturities:
Yen-denominated:
Japan government and agencies	$	17,436	$	556	$	12	$	17,980
Mortgage- and asset-backed securities		923		32		5		950
Public utilities		2,575		71		117		2,529
Sovereign and supranational		1,721		119		19		1,821
Banks/financial institutions		4,766		134		410		4,490
Other corporate		5,860		154		485		5,529
Total yen-denominated		33,281		1,066		1,048		33,299
Dollar-denominated:
U.S. government and agencies		1,816		71		0		1,887
Municipalities		1,027		19		21		1,025
Mortgage- and asset-backed securities(1)		451		98		1		548
Collateralized debt obligations		4		0		0		4
Public utilities		2,824		266		35		3,055
Sovereign and supranational		392		67		3		456
Banks/financial institutions		3,298		180		52		3,426
Other corporate		8,175		700		69		8,806
Total dollar-denominated		17,987		1,401		181		19,207
Total fixed maturities		51,268		2,467		1,229		52,506
Perpetual securities:
Yen-denominated:
Banks/financial institutions		6,570		200		374		6,396
Other corporate		332		25		0		357
Dollar-denominated:
Banks/financial institutions		357		16		23		350
Total perpetual securities		7,259		241		397		7,103
Equity securities		21		4		2		23
Total securities available for sale	$	58,548	$	2,712	$	1,628	$	59,632

⁽¹⁾ Includes less than $1 million of other-than-temporary non-credit-related losses

	June 30, 2011
(In millions)	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair   Value
Securities held to maturity,   carried at amortized cost:
Fixed maturities:
Yen-denominated:
Japan government and agencies	$	3,216	$	70	$	4	$	3,282
Municipalities		535		19		4		550
Mortgage- and asset-backed securities		136		4		0		140
Public utilities		6,396		260		127		6,529
Sovereign and supranational		4,173		198		89		4,282
Banks/financial institutions		12,303		211		589		11,925
Other corporate		5,149		214		89		5,274
Total yen-denominated		31,908		976		902		31,982
Total securities held to maturity	$	31,908	$	976	$	902	$	31,982

	December 31, 2010
(In millions)	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair   Value
Securities available for sale,   carried at fair value:
Fixed maturities:
Yen-denominated:
Japan government and agencies	$	16,607	$	584	$	14	$	17,177
Mortgage- and asset-backed securities		1,224		35		15		1,244
Public utilities		2,554		117		80		2,591
Sovereign and supranational		903		47		12		938
Banks/financial institutions		5,927		152		1,177		4,902
Other corporate		5,733		136		457		5,412
Total yen-denominated		32,948		1,071		1,755		32,264
Dollar-denominated:
U.S. government and agencies		32		4		0		36
Municipalities		1,006		9		42		973
Mortgage- and asset-backed securities(1)		485		90		13		562
Collateralized debt obligations		5		0		0		5
Public utilities		2,568		246		36		2,778
Sovereign and supranational		395		63		2		456
Banks/financial institutions		3,496		143		108		3,531
Other corporate		7,167		662		79		7,750
Total dollar-denominated		15,154		1,217		280		16,091
Total fixed maturities		48,102		2,288		2,035		48,355
Perpetual securities:
Yen-denominated:
Banks/financial institutions		7,080		172		533		6,719
Other corporate		328		15		0		343
Dollar-denominated:
Banks/financial institutions		419		61		30		450
Total perpetual securities		7,827		248		563		7,512
Equity securities		22		3		2		23
Total securities available for sale	$	55,951	$	2,539	$	2,600	$	55,890

⁽¹⁾  Includes $4 of other-than-temporary non-credit-related losses

	December 31, 2010
(In millions)	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Securities held to maturity,   carried at amortized cost:
Fixed maturities:
Yen-denominated:
Japan government and agencies	$	344	$	4	$	4	$	344
Municipalities		407		18		2		423
Mortgage- and asset-backed securities		146		5		0		151
Public utilities		6,339		326		120		6,545
Sovereign and supranational		4,951		305		65		5,191
Banks/financial institutions		12,618		216		526		12,308
Other corporate		5,279		274		46		5,507
Total yen-denominated		30,084		1,148		763		30,469
Total securities held to maturity	$	30,084	$	1,148	$	763	$	30,469

Contractual Maturities of Investments

The contractual maturities of our investments in fixed maturities at June 30, 2011, were as follows:

	Aflac Japan				Aflac U.S.
(In millions)	Amortized Cost		Fair Value		Amortized Cost		Fair   Value
Available for sale:
Due in one year or less	$	1,515	$	1,558	$	56	$	57
Due after one year through five years		3,755		3,964		255		287
Due after five years through 10 years		3,697		3,951		936		1,076
Due after 10 years		32,370		32,378		7,199		7,619
Mortgage- and asset-backed securities		1,327		1,441		47		56
Total fixed maturities available for sale	$	42,664	$	43,292	$	8,493	$	9,095
Held to maturity:
Due in one year or less	$	714	$	724	$	0	$	0
Due after one year through five years		1,172		1,265		0		0
Due after five years through 10 years		3,103		3,439		0		0
Due after 10 years		26,782		26,413		0		0
Mortgage- and asset-backed securities		137		141		0		0
Total fixed maturities held to maturity	$	31,908	$	31,982	$	0	$	0

Economic Maturities of Investments in Perpetual Securities

The economic maturities of our investments in perpetual securities, which were all reported as available for sale at June 30, 2011, were as follows:

	Aflac Japan				Aflac U.S.
(In millions)	Amortized Cost		Fair Value		Amortized Cost		Fair   Value
Due in one year or less	$	435	$	497	$	0	$	0
Due after one year through five years		1,498		1,555		5		5
Due after five years through 10 years		838		881		0		0
Due after 10 years		4,311		3,992		172		173
Total perpetual securities available for sale	$	7,082	$	6,925	$	177	$	178

Bank and Financial Institution Investments

Our total investments in the bank and financial institution sector, including those classified as perpetual securities, were as follows:

	June 30, 2011			December 31, 2010
	Total Investments in Banks and Financial Institutions Sector (in millions)		Percentage of Total Investment Portfolio	Total Investments in Banks and Financial Institutions Sector (in millions)		Percentage of Total Investment     Portfolio
Debt Securities:
Amortized cost	$	20,367	22  %	$	22,041	26  %
Fair value		19,841	22		20,741	24
Perpetual Securities:
Upper Tier II:
Amortized cost	$	4,426	5  %	$	4,957	6  %
Fair value		4,432	5		4,748	5
Tier I:
Amortized cost		2,501	3		2,542	3
Fair value		2,314	2		2,421	3
Total:
Amortized cost	$	27,294	30  %	$	29,540	35  %
Fair value		26,587	29		27,910	32

Gain (Loss) on Investments

Information regarding pretax realized gains and losses from investments is as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
(In millions)	2011			2010			2011			2010
Realized investment gains (losses) on securities:
Debt securities:
Available for sale:
Gross gains from sales	$	10		$	0		$	36		$	51
Gross losses from sales		(132	)		(110	)		(319	)		(190	)
Net gains (losses) from redemptions		(1	)		1			6			1
Other-than-temporary impairment losses		(344	)		0			(748	)		0
Total debt securities		(467	)		(109	)		(1,025	)		(138	)
Perpetual securities:
Available for sale:
Gross gains from sales		48			125			54			133
Gross losses from sales		(107	)		0			(109	)		0
Other-than-temporary impairment losses		(184	)		0			(184	)		(41	)
Total perpetual securities		(243	)		125			(239	)		92
Equity securities:
Gross losses from sales		0			(2	)		0			(2	)
Other-than-temporary impairment losses		0			0			(1	)		(1	)
Total equity securities		0			(2	)		(1	)		(3	)
Other assets:
Derivative gains (losses)		(25	)		(103	)		(55	)		(86	)
Other		67			0			73			0
Total other assets		42			(103	)		18			(86	)
Total realized investment gains (losses)	$	(668	)	$	(89	)	$	(1,247	)	$	(135	)

Other Than Temporary Impairment Losses on Investment Securities

The following table details our pretax other-than-temporary impairment losses by investment category.

	Three Months Ended June 30,				Six Months Ended June 30,
(In millions)	2011		2010		2011		2010
Perpetual securities	$	184	$	0	$	184	$	41
Corporate bonds		343		0		740		0
Mortgage- and asset-backed securities		1		0		7		0
Municipalities		0		0		1		0
Equity securities		0		0		1		1
Total other-than-temporary impairment losses realized	$	528	$	0	$	933	$	42

Other than Temporary Impairment, Credit Losses Recognized in Earnings

The following table summarizes cumulative credit-related impairment losses on the securities still held at the end of the reporting period, for which other-than-temporary losses have been recognized and only the amount related to credit loss was recognized in earnings.

	Three Months Ended June 30,				Six Months Ended June 30,
(In millions)	2011		2010		2011		2010
Cumulative credit loss impairments, beginning of period	$	4	$	23	$	13	$	24
Securities sold during period		0		(10)		(9)		(11)
Cumulative credit loss impairments, end of period	$	4	$	13	$	4	$	13

Net Effect on Shareholders' Equity of Unrealized Gains and Losses from Investment Securities

The net effect on shareholders’ equity of unrealized gains and losses from investment securities was as follows:

(In millions)	June 30, 2011			December 31, 2010
Unrealized gains (losses) on securities available for sale	$	1,084		$	(61)
Unamortized unrealized gains on securities transferred to held to maturity		98			135
Deferred income taxes		(430	)		(41)
Shareholders’ equity, unrealized gains (losses) on investment securities	$	752		$	33

Investments Gross Unrealized Loss Aging

The following tables show the fair value and gross unrealized losses, including the portion of other-than-temporary impairment recognized in accumulated other comprehensive income, of our available-for-sale and held-to-maturity investments, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position.

	June 30, 2011
	Total				Less than 12 months				12 months or longer
(In millions)	Fair     Value		Unrealized Losses		Fair     Value		Unrealized Losses		Fair     Value		Unrealized   Losses
Fixed maturities:
Japan government and agencies:
Yen-denominated	$	1,590	$	16	$	1,590	$	16	$	0	$	0
Municipalities:
Dollar-denominated		405		21		365		9		40		12
Yen-denominated		58		4		0		0		58		4
Mortgage- and asset- backed securities:
Dollar-denominated		20		1		5		0		15		1
Yen-denominated		154		5		12		1		142		4
Public utilities:
Dollar-denominated		636		35		585		28		51		7
Yen-denominated		4,340		244		1,886		42		2,454		202
Sovereign and supranational:
Dollar-denominated		62		3		29		1		33		2
Yen-denominated		2,115		108		968		16		1,147		92
Banks/financial institutions:
Dollar-denominated		1,074		52		535		15		539		37
Yen-denominated		9,517		999		1,111		29		8,406		970
Other corporate:
Dollar-denominated		1,882		69		1,512		43		370		26
Yen-denominated		4,739		574		1,248		53		3,491		521
Total fixed maturities		26,592		2,131		9,846		253		16,746		1,878
Perpetual securities:
Dollar-denominated		210		23		117		3		93		20
Yen-denominated		3,096		374		482		21		2,614		353
Total perpetual securities		3,306		397		599		24		2,707		373
Equity securities		8		2		6		1		2		1
Total	$	29,906	$	2,530	$	10,451	$	278	$	19,455	$	2,252

	December 31, 2010
	Total				Less than 12 months				12 months or longer
(In millions)	Fair     Value		Unrealized Losses		Fair     Value		Unrealized Losses		Fair     Value		Unrealized   Losses
Fixed maturities:
Japan government and agencies:
Yen-denominated	$	1,634	$	18	$	1,634	$	18	$	0	$	0
Municipalities:
Dollar-denominated		682		42		632		28		50		14
Yen-denominated		59		2		0		0		59		2
Mortgage- and asset- backed securities:
Dollar-denominated		78		13		20		0		58		13
Yen-denominated		415		15		415		15		0		0
Public utilities:
Dollar-denominated		556		36		498		28		58		8
Yen-denominated		2,877		200		766		47		2,111		153
Sovereign and supranational:
Dollar-denominated		45		2		12		0		33		2
Yen-denominated		1,579		77		428		1		1,151		76
Banks/financial institutions:
Dollar-denominated		1,484		108		753		22		731		86
Yen-denominated		10,609		1,703		1,506		40		9,103		1,663
Other corporate:
Dollar-denominated		1,741		79		1,456		52		285		27
Yen-denominated		4,503		503		507		45		3,996		458
Total fixed maturities		26,262		2,798		8,627		296		17,635		2,502
Perpetual securities:
Dollar-denominated		208		30		149		19		59		11
Yen-denominated		4,171		533		1,793		119		2,378		414
Total perpetual securities		4,379		563		1,942		138		2,437		425
Equity securities		13		2		13		1		0		1
Total	$	30,654	$	3,363	$	10,582	$	435	$	20,072	$	2,928

Bank and Financial Institution Investments in an Unrealized Loss Position

The following table shows the composition of our investments in an unrealized loss position in the bank and financial institution sector by fixed-maturity securities and perpetual securities. The table reflects those securities in that sector that were in an unrealized loss position as a percentage of our total investment portfolio in an unrealized loss position and their respective unrealized losses as a percentage of total unrealized losses.

	June 30, 2011		December 31, 2010
	Percentage of Total Investments in an Unrealized Loss Position	Percentage of Total Unrealized Losses	Percentage of Total Investments in an Unrealized Loss Position	Percentage of         Total         Unrealized         Losses
Fixed maturities	35  %	41  %	39  %	54  %
Perpetual securities:
Upper Tier II	5	6	9	10
Tier I	6	10	5	7
Total perpetual securities	11	16	14	17
Total	46  %	57  %	53  %	71   %

Investments in Variable Interest Entities

The following table details our investments in VIEs.

Investments in Variable Interest Entities

	June 30, 2011				December 31, 2010
(In millions)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
VIEs:
Consolidated:
Total VIEs consolidated	$	7,104	$	7,247	$	7,201	$	7,363
Not consolidated:
CDOs		4		4		5		5
Other		13,044		13,191		13,914		13,214
Total VIEs not consolidated		13,048		13,195		13,919		13,219
Total VIEs	$	20,152	$	20,442	$	21,120	$	20,582

Securities Lending

The following table presents our security loans outstanding and the corresponding collateral held:

(In millions)	June 30,     2011		December 31,     2010
Security loans outstanding, fair value	$	328	$	186
Cash collateral on loaned securities		338		191

PIIGS

Investment Exposure to Sovereign Debt and Financial Institutions

Our investment exposure to sovereign debt and financial institutions in Greece, Ireland, Italy, Portugal and Spain was as follows:

	June 30, 2011					December 31, 2010
(In millions)	Amortized Cost			Fair    Value		Amortized Cost			Fair    Value
Sovereign and supranational:
Italy	$	310		$	304	$	307		$	306
Spain		737			768		730			782
Total	$	1,047		$	1,072	$	1,037		$	1,088
Banks and financial institutions:
Greece	$	0		$	0	$	1,152		$	391
Ireland		525			379		710			659
Italy		186			182		184			183
Portugal		282			282		859			770
Spain		531			499		526			503
Total	$	1,524	(1)	$	1,342	$	3,431	(1)	$	2,506

⁽¹⁾  Represents 6% in 2011 and 12% in 2010 of total investments in the banks and financial institutions sector, and 1% in 2011 and 4% in 2010 of total investments in debt and perpetual securities

Perpetual Securities

Schedule of Available-for-sale Securities Reconciliation

Details of our holdings of perpetual securities were as follows:

Perpetual Securities

		June 30, 2011							December 31, 2010
(In millions)	Credit Rating	Amortized Cost		Fair Value		Unrealized Gain (Loss)			Amortized Cost		Fair Value		Unrealized Gain (Loss)
Upper Tier II:
	AA	$	192	$	204	$	12		$	190	$	201	$	11
	A		3,247		3,260		13			3,279		3,250		(29	)
	BBB		1,051		1,057		6			1,274		1,164		(110	)
	BB or lower		268		268		0			542		476		(66	)
Total Upper Tier II			4,758		4,789		31			5,285		5,091		(194	)
Tier I:
	A		601		524		(77	)		632		568		(64	)
	BBB		1,531		1,446		(85	)		1,386		1,296		(90	)
	BB or lower		369		344		(25	)		524		557		33
Total Tier I			2,501		2,314		(187	)		2,542		2,421		(121	)
Total		$	7,259	$	7,103	$	(156	)	$	7,827	$	7,512	$	(315	)

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Consolidated Statements of Earnings (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Revenues:
Premiums, principally supplemental health insurance	$ 4,956	$ 4,333	$ 9,828	$ 8,681
Net investment income	784	727	1,579	1,453
Realized investment gains (losses):
Other-than-temporary impairment losses	(528)	0	(933)	(42)
Sales and redemptions	(182)	14	(326)	(7)
Derivative and other gains (losses)	42	(103)	12	(86)
Total realized investment gains (losses)	(668)	(89)	(1,247)	(135)
Other income	16	9	44	45
Total revenues	5,088	4,980	10,204	10,044
Benefits and expenses:
Benefits and claims	3,310	2,885	6,532	5,741
Acquisition and operating expenses:
Amortization of deferred policy acquisition costs	264	229	542	509
Insurance commissions	427	398	849	801
Insurance expenses	543	508	1,051	988
Interest expense	46	33	92	66
Other operating expenses	45	38	86	76
Total acquisition and operating expenses	1,325	1,206	2,620	2,440
Total benefits and expenses	4,635	4,091	9,152	8,181
Earnings before income taxes	453	889	1,052	1,863
Income taxes	173	308	378	646
Net earnings	$ 280	$ 581	$ 674	$ 1,217
Net earnings per share:
Basic	$ 0.60	$ 1.24	$ 1.44	$ 2.60
Diluted	$ 0.60	$ 1.23	$ 1.43	$ 2.58
Weighted-average outstanding common shares used in computing earnings per share (In thousands):
Basic	466,498	468,824	467,317	468,377
Diluted	469,752	472,539	470,990	472,497
Cash dividends per share	$ 0.30	$ 0.28	$ 0.60	$ 0.56

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Investment Exposure to Sovereign Debt and Financial Institutions (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2011		Dec. 31, 2010
PIIGS | Sovereign and Supranational
Summary of Investment Holdings [Line Items]
Amortized Cost	$ 1,047		$ 1,037
Fair value	1,072		1,088
PIIGS | Sovereign and Supranational | Italy
Summary of Investment Holdings [Line Items]
Amortized Cost	310		307
Fair value	304		306
PIIGS | Sovereign and Supranational | Spain
Summary of Investment Holdings [Line Items]
Amortized Cost	737		730
Fair value	768		782
PIIGS | Banks/financial Institutions
Summary of Investment Holdings [Line Items]
Amortized Cost	1,524	[1]	3,431	[1]
Fair value	1,342		2,506
Percentage of Total Investments in Banks and Financial Sector, Amortized Cost	6.00%		12.00%
Percentage of Total Investment Portfolio, Amortized Cost	1.00%		4.00%
PIIGS | Banks/financial Institutions | Italy
Summary of Investment Holdings [Line Items]
Amortized Cost	186		184
Fair value	182		183
PIIGS | Banks/financial Institutions | Spain
Summary of Investment Holdings [Line Items]
Amortized Cost	531		526
Fair value	499		503
PIIGS | Banks/financial Institutions | Ireland
Summary of Investment Holdings [Line Items]
Amortized Cost	525		710
Fair value	379		659
PIIGS | Banks/financial Institutions | Greece
Summary of Investment Holdings [Line Items]
Amortized Cost	0		1,152
Fair value	0		391
PIIGS | Banks/financial Institutions | Portugal
Summary of Investment Holdings [Line Items]
Amortized Cost	282		859
Fair value	282		770
Banks/financial Institutions
Summary of Investment Holdings [Line Items]
Amortized Cost	27,294		29,540
Fair value	$ 26,587		$ 27,910
Percentage of Total Investment Portfolio, Amortized Cost	30.00%		35.00%

[1] Represents 6% in 2011 and 12% in 2010 of total investments in the banks and financial institutions sector, and 1% in 2011 and 4% in 2010 of total investments in debt and perpetual securities

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Components of the Gain or Loss on Derivatives that Qualified as Cash Flow Hedges (Detail) (Cash flow hedges, USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Trading Activity, Gains and Losses, Net [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income on Derivative (Effective Portion)	$ 17	$ 8	$ (38)	$ (2)
Net Realized Investment Gains (Losses) Recognized in Income on Derivative (Ineffective Portion)	2	3	(2)	0
Interest rate swaps
Trading Activity, Gains and Losses, Net [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income on Derivative (Effective Portion)	0	0	1	1
Net Realized Investment Gains (Losses) Recognized in Income on Derivative (Ineffective Portion)	0	0	0	0
Foreign currency swaps
Trading Activity, Gains and Losses, Net [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income on Derivative (Effective Portion)	17	8	(39)	(3)
Net Realized Investment Gains (Losses) Recognized in Income on Derivative (Ineffective Portion)	$ 2	$ 3	$ (2)	$ 0

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Summary of Notes Payable (Parenthetical) (Detail) In Millions, unless otherwise specified	Jun. 30, 2011 8.50% senior notes due May 2019	Dec. 31, 2010 8.50% senior notes due May 2019	Jun. 30, 2011 6.45% senior notes due August 2040 USD ($)	Dec. 31, 2010 6.45% senior notes due August 2040 USD ($)	Jun. 30, 2011 6.90% senior notes due December 2039 USD ($)	Dec. 31, 2010 6.90% senior notes due December 2039 USD ($)	Jun. 30, 2011 3.45% senior notes due August 2015	Dec. 31, 2010 3.45% senior notes due August 2015	Jun. 30, 2011 1.52% yen-denominated Uridashi notes due September 2011 JPY (¥)	Dec. 31, 2010 1.52% yen-denominated Uridashi notes due September 2011 JPY (¥)	Jun. 30, 2011 2.26% yen-denominated Uridashi notes due September 2016 JPY (¥)	Dec. 31, 2010 2.26% yen-denominated Uridashi notes due September 2016 JPY (¥)	Jun. 30, 2011 Variable interest rate yen-denominated Uridashi notes due September 2011 JPY (¥)	Dec. 31, 2010 Variable interest rate yen-denominated Uridashi notes due September 2011 JPY (¥)	Jun. 30, 2011 1.87% yen-denominated Samurai notes due June 2012 JPY (¥)	Dec. 31, 2010 1.87% yen-denominated Samurai notes due June 2012 JPY (¥)	Jun. 30, 2011 3.60% yen-denominated loan due July 2015 JPY (¥)	Dec. 31, 2010 3.60% yen-denominated loan due July 2015 JPY (¥)	Jun. 30, 2011 3.00% yen-denominated loan due August 2015 JPY (¥)	Dec. 31, 2010 3.00% yen-denominated loan due August 2015 JPY (¥)
Debt Instrument [Line Items]
Notes payable, interest rate	8.50%	8.50%	6.45%	6.45%	6.90%	6.90%	3.45%	3.45%	1.52%	1.52%	2.26%	2.26%	0.58%		1.87%	1.87%	3.60%	3.60%	3.00%	3.00%
Notes payable, principal amount			$ 450.0	$ 450.0	$ 400.0	$ 400.0			¥ 15,000.0	¥ 15,000.0	¥ 8,000.0	¥ 8,000.0	¥ 20,000.0	¥ 20,000.0	¥ 26,600.0	¥ 26,600.0	¥ 10,000.0	¥ 10,000.0	¥ 5,000.0	¥ 5,000.0
Notes payable, underwriting discount			$ 2	$ 2	$ 4	$ 4

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Securities Lending (Detail) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Schedule of Investments [Line Items]
Security loans outstanding, fair value	$ 328	$ 186
Cash collateral on loaned securities	$ 338	$ 191

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Maximum Potential Risk, Fair Value, Weighted-Average Years to Maturity, and Underlying Referenced Credit Obligation Type for Credit Default Swaps (Detail) (Corporate Bonds, USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Credit Derivatives [Line Items]
Maximum potential risk	$ (559)	$ (756)
Estimated fair value	(253)	(343)
Less than one year
Credit Derivatives [Line Items]
Maximum potential risk	0	0
Estimated fair value	0	0
One to three years
Credit Derivatives [Line Items]
Maximum potential risk	0	0
Estimated fair value	0	0
Three to five years
Credit Derivatives [Line Items]
Maximum potential risk	(141)	(340)
Estimated fair value	(11)	(118)
More than Five and within Ten Years from Balance Sheet Date
Credit Derivatives [Line Items]
Maximum potential risk	(418)	(416)
Estimated fair value	$ (242)	$ (225)

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Carrying Values and Estimated Fair Values of Financial Instruments (Detail) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Assets:
Equity securities	$ 23	$ 23
Variable Interest Entity, Consolidated | Carrying Value
Assets:
Fixed-maturity securities	5,745	5,869
Perpetual securities	1,544	1,538
Carrying Value
Assets:
Fixed-maturity securities	78,669	72,570
Perpetual securities	5,559	5,974
Equity securities	23	23
Interest rate, foreign currency, and credit default swaps	495	564
Liabilities:
Notes payable (excluding capitalized leases)	3,042	3,032
Interest rate, foreign currency, and credit default swaps	584	741
Obligation to Japanese policyholder protection corporation	89	108
Variable Interest Entity, Consolidated | Fair Value
Assets:
Fixed-maturity securities	5,703	5,825
Perpetual securities	1,544	1,538
Fair Value
Assets:
Fixed-maturity securities	78,785	72,999
Perpetual securities	5,559	5,974
Equity securities	23	23
Interest rate, foreign currency, and credit default swaps	495	564
Liabilities:
Notes payable (excluding capitalized leases)	3,283	3,248
Interest rate, foreign currency, and credit default swaps	584	741
Obligation to Japanese policyholder protection corporation	$ 89	$ 108

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Information Regarding Pretax Realized Gains and Losses From Investments (Detail) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Gain (Loss) on Investments [Line Items]
Derivative gains (losses)	$ 42	$ (103)	$ 12	$ (86)
Other-than-temporary impairment losses	(528)	0	(933)	(42)
Total realized investment gains (losses)	(668)	(89)	(1,247)	(135)
Debt Securities
Gain (Loss) on Investments [Line Items]
Gross gains from sales	10	0	36	51
Gross losses from sales	(132)	(110)	(319)	(190)
Net gains (losses) from redemptions	(1)	1	6	1
Total realized investment gains (losses)	(467)	(109)	(1,025)	(138)
Debt Securities | Available-for-sale Securities
Gain (Loss) on Investments [Line Items]
Other-than-temporary impairment losses	(344)	0	(748)	0
Perpetual Securities
Gain (Loss) on Investments [Line Items]
Gross gains from sales	48	125	54	133
Gross losses from sales	(107)	0	(109)	0
Other-than-temporary impairment losses	(184)	0	(184)	(41)
Total realized investment gains (losses)	(243)	125	(239)	92
Equity Securities
Gain (Loss) on Investments [Line Items]
Gross losses from sales	0	(2)	0	(2)
Other-than-temporary impairment losses	0	0	(1)	(1)
Total realized investment gains (losses)	0	(2)	(1)	(3)
Other Assets:
Gain (Loss) on Investments [Line Items]
Derivative gains (losses)	(25)	(103)	(55)	(86)
Other	67	0	73	0
Total realized investment gains (losses)	$ 42	$ (103)	$ 18	$ (86)