Indemnity Accumulated Other Comprehensive Income (Loss) (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Amounts reclassified out of accumulated other comprehensive income (loss) and the related affected line item in the Consolidated Statements of Operations where net income is presented
Net realized investment gains (losses)									$ 771	$ 418	$ (4)
Net impairment losses recognized in earnings									(13)	0	(2)
Prior service cost									1	1
Net actuarial loss									15	11
Income (loss) from operations before income taxes and noncontrolling interest	470	398	263	436	165	270	(70)	534	1,567	899	358
Provision for income taxes									519	280	90
Net income (loss)	314	267	177	290	119	184	(38)	354	1,048	619	268
Less: Net income (loss) attributable to noncontrolling interest in consolidated entity – Exchange	278	221	133	253	89	133	(81)	318	885	459	99
Net income (loss) attributable to Indemnity	36	46	44	37	30	51	43	36	163	160	169
Amounts reclassified from accumulated other comprehensive income (loss)
Amounts reclassified out of accumulated other comprehensive income (loss) and the related affected line item in the Consolidated Statements of Operations where net income is presented
Net income (loss) attributable to Indemnity									(9)
Unrealized holding gains (losses) on available-for-sale securities | Amounts reclassified from accumulated other comprehensive income (loss)
Amounts reclassified out of accumulated other comprehensive income (loss) and the related affected line item in the Consolidated Statements of Operations where net income is presented
Net realized investment gains (losses)									3
Net impairment losses recognized in earnings									(13)
Income (loss) from operations before income taxes and noncontrolling interest									(10)
Provision for income taxes									(3)
Net income (loss)									(7)
Less: Net income (loss) attributable to noncontrolling interest in consolidated entity – Exchange									(8)
Net income (loss) attributable to Indemnity									1
Amortization of postretirement plan items | Amounts reclassified from accumulated other comprehensive income (loss)
Amounts reclassified out of accumulated other comprehensive income (loss) and the related affected line item in the Consolidated Statements of Operations where net income is presented
Prior service cost									(1)
Net actuarial loss									(15)
Income (loss) from operations before income taxes and noncontrolling interest									(16)
Provision for income taxes									(6)
Net income (loss)									(10)
Net income (loss) attributable to Indemnity									$ (10)