CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Financial Position [Abstract]
Receivables, allowance for doubtful accounts (in dollars)	$ 67	$ 62	$ 53
Common Stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01
Common Stock, shares authorized	3,000	3,000	3,000
Common Stock, shares issued	100	100	100
Common Stock, shares outstanding	100	100	100