Consolidated Statement of Comprehensive Income (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]
Net earnings, including noncontrolling interests	$ 91	$ 98	$ 281	$ 288
Net unrealized gains (losses) on securities:
Unrealized holding gains (losses) on securities arising during the period	(73)	4	194	(162)
Reclassification adjustment for realized gains included in net earnings	(8)	(36)	(28)	(99)
Total net unrealized gains (losses) on securities	(81)	(32)	166	(261)
Foreign currency translation adjustments	(2)	3	(5)	(6)
Other comprehensive income (loss), net of tax	(83)	(29)	161	(267)
Total comprehensive income, net of tax	8	69	442	21
Less: Comprehensive income (loss) attributable to noncontrolling interests	(27)	15	(41)	(31)
Comprehensive income attributable to shareholders	$ 35	$ 54	$ 483	$ 52