Consolidated Statement of Operations - USD ($) shares in Thousands, $ in Thousands	2 Months Ended	3 Months Ended																12 Months Ended
	Feb. 13, 2017	Dec. 31, 2016		Sep. 30, 2016		Jun. 30, 2016		Mar. 31, 2016		Dec. 31, 2015		Sep. 30, 2015		Jun. 30, 2015		Mar. 31, 2015		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement [Abstract]
Revenue		$ 809,053		$ 721,467		$ 751,398		$ 749,219		$ 769,280		$ 714,453		$ 754,219		$ 748,089		$ 3,031,137	$ 2,986,041	$ 2,994,011
Costs and expenses		(598,276)		(580,722)		(589,409)		(586,296)		(581,478)		(572,774)		(587,452)		(569,748)		(2,354,703)	(2,311,452)	(2,318,326)
Gross profit		210,777		140,745		161,989		162,923		187,802		141,679		166,767		178,341		676,434	674,589	675,685
General and administrative expenses																		(137,730)	(130,813)	(184,749)
(Losses) gains on divestitures and impairment charges, net																		(26,819)	6,522	116,613
Operating income		179,329		114,386		94,498		123,672		157,055		124,548		127,580		141,115		511,885	550,298	607,549
Interest expense																		(162,093)	(172,897)	(177,571)
Losses on early extinguishment of debt, net																		(22,503)	(6,918)	(29,158)
Other (expense) income, net																		(631)	(132)	1,780
Income from continuing operations before income taxes		139,289	[1]	74,963	[1]	32,639	[1]	79,767	[1]	113,699	[1]	74,045	[1]	84,489	[1]	98,118	[1]	326,658	370,351	402,600
Provision for income taxes		72,872		27,422		16,746		32,313		41,249		26,118		31,007		36,653		(149,353)	(135,027)	(225,980)
Income from continuing operations										72,450		47,927		53,482		61,465		177,305	235,324	176,620
Net (loss) income from discontinued operations, net of tax										0		0		(390)		0		0	(390)	2,186
Net income		66,417		47,541		15,893		47,454		72,450		47,927		53,092		61,465		177,305	234,934	178,806
Net income attributable to noncontrolling interests		(171)		186		(273)		(9)		(96)		(479)		(497)		(90)		(267)	(1,162)	(6,337)
Net income attributable to common stockholders		$ 66,246		$ 47,727		$ 15,620		$ 47,445		$ 72,354		$ 47,448		$ 52,595		$ 61,375		$ 177,038	$ 233,772	$ 172,469
Basic earnings per share:
Net income attributable to common stockholders, basic		$ 0.35	[2]	$ 0.25	[2]	$ 0.08	[2]	$ 0.24	[2]	$ 0.37	[2]	$ 0.24	[2]	$ 0.26	[2]	$ 0.30	[2]	$ 0.92	$ 1.17	$ 0.82
Basic weighted average number of shares																		193,086	200,356	210,741
Diluted earnings per share:
Net income attributable to common stockholders, diluted		$ 0.34	[2]	$ 0.24	[2]	$ 0.08	[2]	$ 0.24	[2]	$ 0.36	[2]	$ 0.23	[2]	$ 0.25	[2]	$ 0.30	[2]	$ 0.90	$ 1.14	$ 0.81
Diluted weighted average number of shares																		196,042	204,450	214,200
Dividends declared per share	$ 0.13																	$ 0.51	$ 0.44	$ 0.34

[1] Includes (Losses) gains on divestitures and impairment charges, net, as described in Note 19.

[2] Net income per share is computed independently for each of the quarters presented. Therefore, the sum of the quarters’ net income per share may not equal the total computed for the year.