Consolidated Condensed Statements of Shareholders' Equity (Deficit) (Unaudited) (Parenthetical) (USD $) In Millions, except Per Share data	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Comprehensive income:
Tax benefit/expense from other comprehensive gains (losses), pension liability	$ (2)	$ 5
Dividends paid per share	$ 2.60	$ 2.00
Comprehensive Income
Comprehensive income:
Tax benefit/expense from other comprehensive gains (losses), pension liability	(2)	5
Accumulated Other Comprehensive Loss
Comprehensive income:
Tax benefit/expense from other comprehensive gains (losses), pension liability	$ (2)	$ 5
Retained Earnings
Comprehensive income:
Dividends paid per share	$ 2.60	$ 2.00