Consolidated Condensed Balance Sheets (Unaudited) (Parenthetical) (USD $) In Millions, except Per Share data	Jun. 30, 2011	Dec. 31, 2010
Assets:
Allowances, accounts receivable	$ 3	$ 3
Shareholders' Deficit:
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	10	10
Common stock:
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	600	600
Common stock, shares issued	175	174
Common stock, shares outstanding	139	147
Treasury stock at cost, shares	35	27