Investments (Details 44) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011	Mar. 31, 2011	Dec. 31, 2010
Assets:
Mortgage Loans on Real Estate, Commercial and Consumer, Net	$ 56,641	$ 56,915
Trading Securities And Other Trading Assets	19,026	18,268
Cash and Cash Equivalents, at Carrying Value	18,667	10,461	10,692	12,957
Accrued Investment Income Receivable	4,612	4,344
Premiums and Other Receivables, Net	23,759	22,481
Total Assets	7,111	7,273
Liabilities
Long-term Debt	23,389	23,692
Other Liabilities	33,144	30,914
Total Liabilities	2,968	3,128
Consolidated Securitization Entities [Member]
Assets:
Mortgage Loans on Real Estate, Commercial and Consumer, Net	3,024	3,138
Trading Securities And Other Trading Assets	89	117
Cash and Cash Equivalents, at Carrying Value	3	21
Accrued Investment Income Receivable	15	16
Premiums and Other Receivables, Net	0	7
Total Assets	3,131	3,299
Liabilities
Long-term Debt	2,916	3,068
Other Liabilities	28	35
Total Liabilities	$ 2,944	$ 3,103