Consolidated Statement of Changes in Equity (Unaudited) (USD $) In Millions, except Share data, unless otherwise specified	Total USD ($)	Common Shares	Common Stock and Capital Surplus USD ($)	Retained Earnings Approp. USD ($)	Retained Earnings Unapprop. USD ($)	Accumulated Other Comprehensive Inc. (Loss) USD ($)	Total USD ($)	Noncontrolling Interests USD ($)
Beginning Balance at Dec. 31, 2012	$ 4,748		$ 1,152	$ 75	$ 2,520	$ 831	$ 4,578	$ 170
Beginning Balance, shares at Dec. 31, 2012		88,979,303
Net earnings	288				313		313	(25)
Other comprehensive income	(267)					(261)	(261)	(6)
Allocation of losses of managed investment entities	0			(30)			(30)	30
Dividends on Common Stock	(52)				(52)		(52)
Shares issued:
Exercise of stock options, shares		1,350,551
Exercise of stock options	44		44				44
Other benefit plans, shares		376,574
Other benefit plans	6		6				6
Dividend reinvestment plan, shares		10,514
Dividend reinvestment plan
Stock-based compensation expense	15		15				15
Shares acquired and retired, shares		(1,448,156)
Shares acquired and retired	(70)		(19)		(51)		(70)
Shares exchanged - benefit plans, shares		(45,179)
Shares exchanged - benefit plans	(1)				(1)		(1)
Other	(1)							(1)
Ending Balance at Sep. 30, 2013	4,710		1,198	45	2,729	570	4,542	168
Ending Balance, shares at Sep. 30, 2013		89,223,607
Beginning Balance at Dec. 31, 2013	4,769		1,213	49	2,777	560	4,599	170
Beginning Balance, shares at Dec. 31, 2013	89,513,386	89,513,386
Net earnings	281				325		325	(44)
Other comprehensive income	161					158	158	3
Allocation of losses of managed investment entities	0			(47)			(47)	47
Dividends on Common Stock	(59)				(59)		(59)
Shares issued:
Exercise of stock options, shares		972,847
Exercise of stock options	34		34				34
Other benefit plans, shares		227,782
Other benefit plans	7		7				7
Dividend reinvestment plan, shares		9,749
Dividend reinvestment plan	1		1				1
Stock-based compensation expense	14		14				14
Shares acquired and retired, shares		(2,209,007)
Shares acquired and retired	(127)		(31)		(96)		(127)
Shares exchanged - benefit plans, shares		(23,790)
Shares exchanged - benefit plans	(1)				(1)		(1)
Other	(2)							(2)
Ending Balance at Sep. 30, 2014	$ 5,078		$ 1,238	$ 2	$ 2,946	$ 718	$ 4,904	$ 174
Ending Balance, shares at Sep. 30, 2014	88,490,967	88,490,967