Indemnity Accumulated Other Comprehensive Income (Loss) (Details 2) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
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 (losses) gains	$ (7)	$ 133	$ 49	$ 189
Net impairment losses recognized in earnings	(2)	0	(4)	0
Income (loss) from operations before income taxes and noncontrolling interest	295	147	492	303
Provision for income taxes	98	44	159	91
Net income (loss)	197	103	333	212	$ 573
Less: Net income attributable to noncontrolling interest in consolidated entity – Exchange	141	54	238	117
Net income attributable to Indemnity	56	49	95	95
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 (losses) gains	8	5	15	18
Net impairment losses recognized in earnings	(2)	0	(4)	0
Income (loss) from operations before income taxes and noncontrolling interest	6	5	11	18
Provision for income taxes	2	2	4	7
Net income (loss)	4	3	7	11
Less: Net income attributable to noncontrolling interest in consolidated entity – Exchange	4	3	7	10
Net income attributable to Indemnity	$ 0	$ 0	$ 0	$ 1