CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net unrecognized actuarial losses	$ 86
Additional Paid-in Capital [Member]
Stock option and restricted stock award transactions are net of a tax (expense) benefit	72	26	28
Accumulated Other Comprehensive (Loss) Income [Member]
Cumulative translation adjustments	251
Net unrecognized actuarial losses	86
Unrecognized losses on forward contracts	$ 1