Debt - Condensed Consolidating Statement of Cash Flows (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net cash provided by (used in) operating activities — continuing operations	$ 152,946	$ (330,727)	$ 204,879
Net cash provided by operating activities — discontinued operations	0	14,086	277,539
Net cash provided by (used in) operating activities	152,946	(316,641)	482,418
Cash flows from investing activities:
Payments for property, plant and equipment	(149,421)	(175,163)	(123,892)
Proceeds from insurance and other recoveries			3,075
Proceeds from divestitures	0	0	58,034
Other, net	0	0	(253)
Proceeds from sale of fixed assets	27,629	9,940	12,962
Net cash used in investing activities — continuing operations	(121,792)	(165,223)	(50,074)
Net cash provided by (used in) investing activities — discontinued operations	0	1,403,494	(124,104)
Net cash provided by (used in) investing activities	(121,792)	1,238,271	(174,178)
Cash flows from financing activities:
Repayments of debt	(668)	(1,027,416)	(1,350,275)
Early retirement of debt	(23,812)	(400,000)	0
Premiums paid on early retirement of debt	(1,161)	(57,243)	0
Proceeds from senior secured revolver	2,277,297	1,043,700	2,481,800
Payments for senior secured revolver	(2,257,246)	(1,258,450)	(2,316,500)
Proceeds from receivables-backed facility	2,656,000	908,000	2,683,816
Payments for receivables-backed facility	(2,634,000)	(695,000)	(2,906,311)
Proceeds from short-term credit facility	0	626,750	0
Payments for short-term credit facility	0	(37,521)	0
Common stock repurchases	(25,000)	0	0
Cash dividends paid	(26,232)	0	0
Payment of financing costs	(3,287)	(6,197)
Issuance of common stock, net of share repurchases for withholding taxes	7,861	23,481	6,434
Tax savings on share-based compensation	360	1,954	571
Net cash used in financing activities — continuing operations	(29,888)	(877,942)	(1,400,465)
Net cash provided by (used in) financing activities — discontinued operations	0	(51,584)	1,098,002
Net cash provided by (used in) financing activities	(29,888)	(929,526)	(302,463)
Effect of exchange rate changes on cash and cash equivalents	(1,666)	1	733
Increase (decrease) in cash and cash equivalents	(400)	(7,895)	6,510
Cash and cash equivalents, beginning of period	16,762	24,657	18,147
Cash and cash equivalents, end of period	16,362	16,762	24,657
Parent
Cash flows from operating activities:
Net cash provided by (used in) operating activities — continuing operations		(550,566)	(88,002)
Net cash provided by (used in) operating activities	(60,367)	(550,566)	(88,002)
Cash flows from investing activities:
Payments for property, plant and equipment			(1,564)
Proceeds from intercompany note			1,155,000
Proceeds from insurance and other recoveries			3,075
Net cash used in investing activities — continuing operations		0	1,156,511
Net cash provided by (used in) investing activities — discontinued operations		1,441,322
Net cash provided by (used in) investing activities	0	1,441,322	1,156,511
Cash flows from financing activities:
Repayments of debt		(1,027,198)	(1,350,263)
Early retirement of debt	(23,812)	(400,000)
Premiums paid on early retirement of debt	(1,161)	(57,243)
Proceeds from senior secured revolver	2,277,297	1,043,700	2,481,800
Payments for senior secured revolver	(2,257,246)	(1,258,450)	(2,316,500)
Proceeds from short-term credit facility		626,750
Payments for short-term credit facility		(37,521)
Common stock repurchases	(25,000)
Cash dividends paid	(26,232)
Payment of financing costs	(1,552)	(6,197)
Issuance of common stock, net of share repurchases for withholding taxes	7,861	23,481	6,434
Tax savings on share-based compensation	360	1,954	571
Net change in intercompany balances	120,800	172,437	121,630
Net cash used in financing activities — continuing operations		(918,287)	(1,056,328)
Net cash provided by (used in) financing activities	71,315	(918,287)	(1,056,328)
Increase (decrease) in cash and cash equivalents	10,948	(27,531)	12,181
Cash and cash equivalents, beginning of period	(12,289)	15,242	3,061
Cash and cash equivalents, end of period	(1,341)	(12,289)	15,242
Guarantor Subsidiaries
Cash flows from operating activities:
Net cash provided by (used in) operating activities — continuing operations		161,706	304,686
Net cash provided by (used in) operating activities	206,982	161,706	304,686
Cash flows from investing activities:
Payments for property, plant and equipment	(149,421)	(175,163)	(122,328)
Proceeds from divestitures			58,034
Other, net			(253)
Proceeds from sale of fixed assets	27,629	9,940	12,962
Net cash used in investing activities — continuing operations		(165,223)	(51,585)
Net cash provided by (used in) investing activities	(121,792)	(165,223)	(51,585)
Cash flows from financing activities:
Repayments of debt	(668)	(218)	(12)
Net change in intercompany balances	(94,929)	21,166	(259,797)
Net cash used in financing activities — continuing operations		20,948	(259,809)
Net cash provided by (used in) financing activities	(95,597)	20,948	(259,809)
Effect of exchange rate changes on cash and cash equivalents		2
Increase (decrease) in cash and cash equivalents	(10,407)	17,433	(6,708)
Cash and cash equivalents, beginning of period	17,433	0	6,708
Cash and cash equivalents, end of period	7,026	17,433	0
Non-Guarantor Subsidiaries
Cash flows from operating activities:
Net cash provided by (used in) operating activities — continuing operations		58,133	(11,805)
Net cash provided by operating activities — discontinued operations		14,086	277,539
Net cash provided by (used in) operating activities	6,331	72,219	265,734
Cash flows from investing activities:
Proceeds from dividend			70,000
Net cash used in investing activities — continuing operations		0	70,000
Net cash provided by (used in) investing activities — discontinued operations		(37,828)	(124,104)
Net cash provided by (used in) investing activities	0	(37,828)	(54,104)
Cash flows from financing activities:
Proceeds from receivables-backed facility	2,656,000	908,000	2,683,816
Payments for receivables-backed facility	(2,634,000)	(695,000)	(2,906,311)
Repayment of intercompany note			(1,155,000)
Payment of intercompany dividend			(70,000)
Payment of financing costs	(1,735)
Net change in intercompany balances	(25,871)	(193,603)	138,167
Net cash used in financing activities — continuing operations		19,397	(1,309,328)
Net cash provided by (used in) financing activities — discontinued operations		(51,584)	1,098,002
Net cash provided by (used in) financing activities	(5,606)	(32,187)	(211,326)
Effect of exchange rate changes on cash and cash equivalents	(1,666)	(1)	733
Increase (decrease) in cash and cash equivalents	(941)	2,203	1,037
Cash and cash equivalents, beginning of period	11,618	9,415	8,378
Cash and cash equivalents, end of period	10,677	11,618	9,415
Eliminations
Cash flows from investing activities:
Proceeds from intercompany note			(1,155,000)
Proceeds from dividend			(70,000)
Net cash used in investing activities — continuing operations			(1,225,000)
Net cash provided by (used in) investing activities			(1,225,000)
Cash flows from financing activities:
Repayment of intercompany note			1,155,000
Payment of intercompany dividend			70,000
Net cash used in financing activities — continuing operations			1,225,000
Net cash provided by (used in) financing activities			$ 1,225,000