Consolidated Investment Entities (Details) (Consolidated Investment Entities:, USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Liabilities
Debt	$ 4,726	$ 4,712
Other liabilities	75	85
Recurring \| Level 1
Assets
Investments:	89	75
Total assets at fair value	89	75
Recurring \| Level 1 \| Common Stocks
Assets
Investments:	89	75
Recurring \| Level 2
Assets
Investments:	4,416	4,355
Receivables	23	39
Other assets	1	2
Total assets at fair value	4,440	4,396
Liabilities
Other liabilities	75	85
Total liabilities at fair value	75	85
Recurring \| Level 2 \| Corporate debt securities
Assets
Investments:	280	314
Recurring \| Level 2 \| Common Stocks
Assets
Investments:	27	25
Recurring \| Level 2 \| Other structured investments
Assets
Investments:	57	54
Recurring \| Level 2 \| Syndicated loans
Assets
Investments:	4,052	3,962
Recurring \| Level 3
Assets
Investments:	185	359
Other assets	1,080	1,108
Total assets at fair value	1,265	1,467
Liabilities
Debt	4,726	4,712
Total liabilities at fair value	4,726	4,712
Recurring \| Level 3 \| Corporate debt securities
Assets
Investments:	4	4
Recurring \| Level 3 \| Common Stocks
Assets
Investments:	12	13
Recurring \| Level 3 \| Syndicated loans
Assets
Investments:	169	342
Recurring \| Total
Assets
Investments:	4,690	4,789
Receivables	23	39
Other assets	1,081	1,110
Total assets at fair value	5,794	5,938
Liabilities
Debt	4,726	4,712
Other liabilities	75	85
Total liabilities at fair value	4,801	4,797
Recurring \| Total \| Corporate debt securities
Assets
Investments:	284	318
Recurring \| Total \| Common Stocks
Assets
Investments:	128	113
Recurring \| Total \| Other structured investments
Assets
Investments:	57	54
Recurring \| Total \| Syndicated loans
Assets
Investments:	$ 4,221	$ 4,304

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