CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
CONSOLIDATED BALANCE SHEETS
Cash, time deposits (in dollars)	$ 114	$ 441
Receivables, allowances for losses and discounts (in dollars)	$ 38	$ 40
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	181,174,050	180,808,992
Treasury stock, shares	16,799,903	17,093,509