Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2015

Fair Value Disclosures [Abstract]

Schedule of Financial Assets at Fair Value Recurring Basis and Fair Value Hierarchy

The following tables present information about the Company's financial assets and liabilities measured at fair value on a recurring basis, aggregated by the level in the fair value hierarchy within which those measurements fall (amounts in thousands):

			Fair Value Measurement at Reporting Date Using
	Balance as of March 31, 2015		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets
Available-for-sale securities (a)	$	135	$	135	$	—	$	—
Liabilities
Interest rate swaps	$	11,509	$	—	$	11,509	$	—

			Fair Value Measurement at Reporting Date Using
	Balance as of December 31, 2014		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets
Available-for-sale securities (a)	$	187	$	187	$	—	$	—
Liabilities
Interest rate swaps	$	10,254	$	—	$	10,254	$	—

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(a) Available-for-sale securities are included in Other assets, net in the accompanying Condensed Consolidated Balance Sheets.

Schedule of Long-Term Debt, Carrying Values and Estimated Fair Values

The following table presents information about the estimated fair value of the Company's long-term debt compared with its carrying amount (amounts in millions):

	March 31, 2015		December 31, 2014
Aggregate fair value	$	2,175	$	2,166
Aggregate carrying amount, net of unamortized discounts	2,104		2,147