CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) (Parenthetical) (USD $)	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Tax expense (benefit) of unrealized gains/losses on cash flow hedges	$ (2,000,000)	$ (5,000,000)
Tax expense (benefit) on cash flow hedges reclassified from AOCI to net income	9,000,000	8,000,000
Tax expense (benefit) of unrealized gains/losses on available for sale securities still held	31,000,000	14,000,000
Tax expense (benefit) on available for sale securities reclassified from AOCI to net income	(4,000,000)	(5,000,000)
Tax expense (benefit) of defined benefit pension and other benefits plans	(8,000,000)	4,000,000
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax	3,000,000	5,000,000
Other comprehensive income (loss) related to equity method investee, tax	$ (4,000,000)	$ 0