Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2014

Fair Value Measurements [Abstract]

Carrying Amount And Estimated Fair Values Of Financial Instruments

	December 31, 2014				December 31, 2013
	Carrying		Fair		Carrying		Fair
	Amount		Value		Amount		Value
	(in millions)
Cash and cash equivalents	$	53	$	53	$	23	$	23
Credit facility	$	300	$	300	$	283	$	283
Term loan facility	$	500	$	500	$	–	$	–
Bridge facility	$	4,500	$	4,500	$	–	$	–
Senior notes	$	1,667	$	1,751	$	1,668	$	1,796
Derivative instruments, net	$	316	$	316	$	38	$	38

Summary Assets And Liabilities Measured At Fair Value On Recurring Basis

	December 31, 2014
	Fair Value Measurements Using:
	Quoted Prices		Significant
	in Active		Other		Significant
	Markets		Observable Inputs		Unobservable Inputs		Assets (Liabilities)
	(Level 1)		(Level 2)		(Level 3)		at Fair Value
Derivative assets	$	–	$	329	$	10	$	339
Derivative liabilities		–		(5)		(18)		(23)
Total	$	–	$	324	$	(8)	$	316
	December 31, 2013
	Fair Value Measurements Using:
	Quoted Prices		Significant
	in Active		Other		Significant
	Markets		Observable Inputs		Unobservable Inputs		Assets (Liabilities)
	(Level 1)		(Level 2)		(Level 3)		at Fair Value
Derivative assets	$	–	$	66	$	13	$	79
Derivative liabilities		–		(9)		(32)		(41)
Total	$	–	$	57	$	(19)	$	38

Reconciliations For Change In Net Fair Value Of Derivative Assets And Liabilities Measured At Fair Value On A Recurring Basis Using Significant Unobservable Inputs (Level 3)

	For the years ended
	December 31,
	2014		2013
	(in millions)
Balance at beginning of period	$	(19)	$	–
Total gains (losses):
Included in earnings		23		(14)
Included in other comprehensive income		–		–
Purchases, issuances, and settlements:
Purchases		–		–
Issuances		–		–
Settlements		(12)		(5)
Transfers into/out of Level 3		–		–
Balance at end of period	$	(8)	$	(19)
Change in gains (losses) included in earnings relating to derivatives still held as of December 31	$	11	$	(19)