Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2014

Fair Value Disclosures [Abstract]

Schedule of financial assets and liabilities and other fair value measurements on a recurring basis

’s financial assets and liabilities and other fair value measurements made on a recurring basis by fair value hierarchy level are as follows:

	September 30, 2014						December 31, 2013
	Level 1		Level 2		Total		Level 1		Level 2		Total
	(millions)
Assets:
Cash equivalents	$	118	$	—	$	118	$	27	$	—	$	27
Restricted cash	4		—		4		2		—		2
Interest rate swaps	—		8		8		—		14		14
Total assets	$	122	$	8	$	130	$	29	$	14	$	43
Liabilities:
Interest rate swaps	$	—	$	5	$	5	$	—	$	—	$	—
Total liabilities	$	—	$	5	$	5	$	—	$	—	$	—

Schedule of other financial instrument, carrying amounts and estimated fair values

The carrying amounts and estimated fair values of other financial instruments, excluding assets and liabilities which are recorded at fair value and disclosed above, are as follows:

	September 30, 2014				December 31, 2013
	Carrying Value		Fair Value		Carrying Value		Fair Value
	(millions)
Notes receivable(a)	$	3	$	3	$	4	$	4
Long-term debt, including current maturities(b)	$	1,857	$	1,890	$	1,799	$	1,815