Acquisitions (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2014

Dec. 31, 2013

Acquisitions [Abstract]

Schedule of supplemental cash flow information regarding acquisitions, excluding the 2007 Merger

	Nine Months Ended
	September 30,
(In millions)	2014		2013
Purchase price (including liabilities assumed)	$	92	$	28
Less liabilities assumed		(35)		—
Net purchase price	$	57	$	28
Net cash paid for acquisitions	$	52	$	22
Seller financed debt		5		6
Payment for acquisitions	$	57	$	28

	Year Ended December 31,
(In millions)	2013		2012			2011
Purchase price (including liabilities assumed)	$	40	$	52		$	41
Less liabilities assumed		—		(3	)		—
Net purchase price	$	40	$	49		$	41
Net cash paid for acquisitions	$	32	$	40		$	33
Seller financed debt		8		9			8
Payment for acquisitions	$	40	$	49		$	41