Recent Accounting Pronouncements (Details) (Consolidation of Variable Interest Entities, Restatement for new accounting standard, USD $)	0 Months Ended
	Jan. 02, 2010
Consolidation of Variable Interest Entities | Restatement for new accounting standard
Recent Accounting Pronouncements
Cumulative effect increase in assets	$ 5,500,000,000
Cumulative effect increase in liabilities	5,100,000,000
Cumulative effect increase in appropriated retained earnings	$ 473,000,000