Schedule II - Aflac Incorporated - Aggregate Contractual Maturities of Notes Payable (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Condensed Financial Statements, Captions [Line Items]
2014	$ 326
2015	445
2016	227
2017	651
2018	0
Thereafter	3,250
Total	4,899
Parent Company
Condensed Financial Statements, Captions [Line Items]
2014	324
2015	443
2016	245
2017	650
2018	0
Thereafter	3,250
Total	$ 4,912

Long term debt maturities repayments of principal total

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- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year.

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