Consolidated Statement of Comprehensive Income (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Consolidated Statement of Comprehensive Income [Abstract]
Net earnings, including noncontrolling interests	$ 84	$ 30	$ 172	$ 84
Net unrealized gains on securities:
Unrealized holding gains on securities arising during the period	78	115	236	136
Reclassification adjustment for realized gains included in net earnings	(12)	(17)	(40)	(20)
Total net unrealized gains on securities	66	98	196	116
Foreign currency translation adjustments	(8)	(2)	(1)	5
Pension and other postretirement plans adjustments		1	1	1
Other comprehensive income, net of tax	58	97	196	122
Total comprehensive income, net of tax	142	127	368	206
Less: Comprehensive income (loss) attributable to noncontrolling interests	(16)	(16)	(37)	(50)
Comprehensive income attributable to shareholders	$ 158	$ 143	$ 405	$ 256