Consolidated Investment Entities (Details) (Consolidated Investment Entities:, USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Liabilities
Debt	$ 4,677	$ 4,450
Other liabilities	603	166
Recurring \| Level 1
Assets
Investments:	121	91
Total assets at fair value	121	91
Recurring \| Level 1 \| Common stocks
Assets
Investments:	117	91
Recurring \| Level 1 \| U.S. government and agencies obligations
Assets
Investments:	4
Recurring \| Level 2
Assets
Investments:	4,147	4,060
Receivables	47	77
Other assets	1	2
Total assets at fair value	4,195	4,139
Liabilities
Other liabilities	603	166
Total liabilities at fair value	603	166
Recurring \| Level 2 \| Corporate debt securities
Assets
Investments:	217	251
Recurring \| Level 2 \| Common stocks
Assets
Investments:	32	32
Recurring \| Level 2 \| Other structured investments
Assets
Investments:	40	57
Recurring \| Level 2 \| Syndicated loans
Assets
Investments:	3,858	3,720
Recurring \| Level 3
Assets
Investments:	311	219
Other assets	1,322	1,214
Total assets at fair value	1,633	1,433
Liabilities
Debt	4,677	4,450
Total liabilities at fair value	4,677	4,450
Recurring \| Level 3 \| Corporate debt securities
Assets
Investments:	3	3
Recurring \| Level 3 \| Common stocks
Assets
Investments:	16	14
Recurring \| Level 3 \| Syndicated loans
Assets
Investments:	292	202
Recurring \| Total
Assets
Investments:	4,579	4,370
Receivables	47	77
Other assets	1,323	1,216
Total assets at fair value	5,949	5,663
Liabilities
Debt	4,677	4,450
Other liabilities	603	166
Total liabilities at fair value	5,280	4,616
Recurring \| Total \| Corporate debt securities
Assets
Investments:	220	254
Recurring \| Total \| Common stocks
Assets
Investments:	165	137
Recurring \| Total \| Other structured investments
Assets
Investments:	40	57
Recurring \| Total \| Syndicated loans
Assets
Investments:	4,150	3,922
Recurring \| Total \| U.S. government and agencies obligations
Assets
Investments:	$ 4

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