SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT (Tables)

12 Months Ended

Dec. 31, 2017

Condensed Financial Information of Parent Company Only Disclosure [Abstract]

Condensed Statements of Operations [Table Text Block]

Schedule I — Condensed Financial Information of Registrant Condensed Statements of Operations (Parent Company Only)
	Years Ended December 31,
	2017			2016			2015
	(in millions)
Revenues
Management and financial advice fees	$	(1	)	$	(1	)	$	(1	)
Net investment income	11			14			2
Other revenues	11			9			14
Total revenues	21			22			15
Banking and deposit interest expense	5			1			—
Total net revenues	16			21			15
Expenses
Benefits, claims, losses and settlement expenses	76			41			13
Distribution expense	18			—			—
Interest and debt expense	116			113			124
General and administrative expense	249			192			193
Total expenses	459			346			330
Pretax loss before equity in earnings of subsidiaries	(443		)	(325		)	(315		)
Income tax benefit	(47		)	(146		)	(123		)
Loss before equity in earnings of subsidiaries	(396		)	(179		)	(192		)
Equity in earnings of subsidiaries	1,876			1,493			1,754
Net income	1,480			1,314			1,562
Other comprehensive income (loss), net of tax	29			(59		)	(409		)
Total comprehensive income	$	1,509		$	1,255		$	1,153
See Notes to Condensed Financial Information of Registrant.

Condensed Balance Sheets [Table Text Block]

Schedule I — Condensed Financial Information of Registrant Condensed Balance Sheets (Parent Company Only)
	December 31,
	2017			2016
	(in millions, except share amounts)
Assets
Cash and cash equivalents	$	494		$	754
Investments	341			314
Loans to subsidiaries	227			167
Due from subsidiaries	382			452
Receivables	5			10
Land, buildings, equipment, and software, net of accumulated depreciation of $1,111 and $1,005, respectively	236			221
Restricted and segregated cash	—			24
Investments in subsidiaries	8,060			7,739
Other assets	1,146			1,240
Total assets	$	10,891		$	10,921
Liabilities and Shareholders’ Equity
Liabilities:
Accounts payable and accrued expenses	$	627		$	524
Due to subsidiaries	74			88
Borrowings from subsidiaries	363			364
Long-term debt	2,891			2,917
Other liabilities	938			736
Total liabilities	4,893			4,629
Shareholders’ Equity:
Common shares ($.01 par value; shares authorized, 1,250,000,000; shares issued, 327,506,935 and 324,006,315, respectively)	3			3
Additional paid-in capital	8,085			7,765
Retained earnings	11,329			10,351
Treasury shares, at cost (180,872,271 and 169,246,411 shares, respectively)	(13,648		)	(12,027		)
Accumulated other comprehensive income, net of tax, including amounts applicable to equity     investments in subsidiaries	229			200
Total shareholders’ equity	5,998			6,292
Total liabilities and equity	$	10,891		$	10,921
See Notes to Condensed Financial Information of Registrant.

Condensed Statements of Cash Flows [Table Text Block]

Schedule I — Condensed Financial Information of Registrant Condensed Statements of Cash Flows (Parent Company Only)
	Years Ended December 31,
	2017			2016			2015
	(in millions)
Cash Flows from Operating Activities
Net income	$	1,480		$	1,314		$	1,562
Equity in earnings of subsidiaries	(1,876		)	(1,493		)	(1,754		)
Dividends received from subsidiaries	1,698			1,465			1,485
Other operating activities, primarily with subsidiaries	712			528			262
Net cash provided by operating activities	2,014			1,814			1,555
Cash Flows from Investing Activities
Available-for-Sale securities:
Proceeds from sales	—			55			112
Maturities, sinking fund payments and calls	44			277			506
Purchases	(77		)	(129		)	(28		)
Proceeds from sale of other investments	3			—			62
Purchase of other investments	—			—			(5		)
Purchase of land, buildings, equipment and software	(69		)	(49		)	(47		)
Contributions to subsidiaries	(79		)	(197		)	(271		)
Return of capital from subsidiaries	47			187			146
Repayment of loans to subsidiaries	1,277			1,910			2,897
Issuance of loans to subsidiaries	(1,337		)	(1,910		)	(2,897		)
Other, net	(91		)	59			6
Net cash provided by investing activities	(282		)	203			481
Cash Flows from Financing Activities
Dividends paid to shareholders	(491		)	(479		)	(465		)
Repurchase of common shares	(1,485		)	(1,707		)	(1,741		)
Cash paid for purchased options with deferred premiums	(19		)	(22		)	(19		)
Issuance of long-term debt, net of issuance costs	—			496			—
Repayments of long-term debt	(11		)	(257		)	(409		)
Borrowings from subsidiaries	15			—			3
Repayments of borrowings from subsidiaries	(15		)	—			(18		)
Exercise of stock options	15			9			16
Other, net	(1		)	36			1
Net cash used in financing activities	(1,992		)	(1,924		)	(2,632		)
Net increase (decrease) in cash and cash equivalents	(260		)	93			(596		)
Cash and cash equivalents at beginning of year	754			661			1,257
Cash and cash equivalents at end of year	$	494		$	754		$	661
Supplemental Disclosures:
Interest paid on debt	$	128		$	121		$	154
Income taxes paid (received), net	(368		)	(112		)	378
Non-cash dividends from subsidiaries	—			11			52
See Notes to Condensed Financial Information of Registrant.