Consolidated Statement of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net earnings, including noncontrolling interests	$ 66	$ 91	$ 240	$ 281
Net unrealized gains (losses) on securities:
Unrealized holding gains (losses) on securities arising during the period	(110)	(73)	(255)	194
Reclassification adjustment for realized (gains) losses included in net earnings	10	(8)	(3)	(28)
Total net unrealized gains (losses) on securities	(100)	(81)	(258)	166
Net unrealized gains on cash flow hedges	2	0	2	0
Foreign currency translation adjustments	(7)	(2)	(15)	(5)
Pension and other postretirement plans adjustments	1	0	1	0
Other comprehensive income (loss), net of tax	(104)	(83)	(270)	161
Total comprehensive income (loss), net of tax	(38)	8	(30)	442
Less: Comprehensive income (loss) attributable to noncontrolling interests	1	(27)	13	(41)
Comprehensive income (loss) attributable to shareholders	$ (39)	$ 35	$ (43)	$ 483