Consolidated Statement of Equity (Parenthetical) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Consolidated Statement of Equity
Net gains attributable to redeemable noncontrolling interests	$ 560	$ 73	$ 280
Net income attributable to noncontrolling nonvoting, callable, junior and senior preferred interests held by the Federal Reserve Bank of New York	74	1,800	140
Other comprehensive income attributable to redeemable noncontrolling interests	$ 2	$ 5