CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net income	$ 619	$ 268	$ 660
Other comprehensive income (loss)
Change in unrealized holding gains on investments, net of tax expense of $121, $12, and $64, respectively	224	22	118
Reclassification adjustment for gross gains included in net income, net of tax expense of $23, $27 and $13, respectively	(44)	(51)	(23)
Postretirement plans, net of tax expense of $17, $22 and $2, respectively	(30)	(41)	(4)
Other comprehensive income (loss)	150	(70)	91
Unrealized gains transferred to noncontrolling interest on sale of life affiliate, net of tax expense of $0, $4, and $0, respectively		9
Comprehensive income	769	207	751
Less: Comprehensive income attributable to noncontrolling interest in consolidated entity – Exchange	637	90	599
Total comprehensive income – Indemnity	$ 132	$ 117	$ 152