Consolidated Statement of Comprehensive Income (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Statement of Comprehensive Income [Abstract]
Net earnings, including noncontrolling interests	$ 107	$ 113
Net unrealized gains on securities:
Unrealized holding gains on securities arising during the period	137	79
Reclassification adjustment for realized gains included in net earnings	(12)	(36)
Total net unrealized gains on securities	125	43
Foreign currency translation adjustments	(5)	(4)
Other comprehensive income, net of tax	120	39
Total comprehensive income, net of tax	227	152
Less: Comprehensive income (loss) attributable to noncontrolling interests	7	(6)
Comprehensive income attributable to shareholders	$ 220	$ 158