Registration of securities issued in business combination transactions

CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical)

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CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
CONSOLIDATED STATEMENTS OF CASH FLOWS      
Increase of capital expenditures in accounts payable $ 31 $ 16 $ 14
Stock-based compensation $ 26 $ 22 $ 24