CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
CONSOLIDATED BALANCE SHEETS
Cash, time deposits (in dollars)	$ 90	$ 114
Receivables, allowances for losses and discounts (in dollars)	$ 41	$ 38
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	250,000,000	250,000,000
Common stock, shares issued	181,865,751	181,174,050
Treasury stock, shares	17,901,925	16,799,903