Consolidated Balance Sheets - Parenthetical (USD $) In Millions, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Statement of Financial Position [Abstract]
Allowance for doubtful accounts and sale returns	$ 54	$ 29
Stock-holders equity attributable to noncontrolling interest, discontinued operations	$ 25	$ 33
Common stock, par value (in usd per share)	$ 1,000,000	$ 1,000,000
Common stock, authorized (in shares)	600,000,000	600,000,000
Common stock, issued (in shares)	412,000,000	412,000,000
Common Stock, In Treasury (in shares)	133,000,000	136,000,000