Accrued Expenses and Other Liabilities Accrued Expenses and Other Liabilities (Schedule of Accrued Expenses and Other Liabilities) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010
Accounts Payable and Accrued Liabilities [Abstract]
Nontrading Derivative Liabilities	$ 5,072		$ 5,367
Cash collateral received from counterparties	969		1,410
Accounts Payable	899		1,178
ResCap settlement accrual	750		0
Accrued Employee Benefits	541		649
Accounts Payable, Related Parties	377		228
Taxes Payable	281		296
Accrued Income Taxes, Current	181		200
Representation And Warranty Obligations Reserve Balance	124	811	825	829	830	830
Deferred Revenue	104		86
Deferred Income Tax Liabilities	100		111
Loan repurchase liabilities	0		2,387
Other Accrued Liabilities	800		1,347
Accrued expenses and other liabilities	$ 10,198		$ 14,084