Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deferred Tax Assets, Gross [Abstract]
Accrued compensation, principally postretirement and other employee benefits	$ 69,428	$ 121,909
Accrued expenses, principally for state income taxes, interest and warranty	21,251	40,256
Net operating loss and other carryforwards	269,892	325,721
Inventories, principally due to reserves for financial reporting purposes and capitalization for tax purposes	11,640	15,730
Accounts receivable, principally due to allowance for doubtful accounts	6,747	8,337
Accrued insurance	1,264	6,483
Long-term liabilities, principally warranty, environmental and exit costs	7,107	5,273
Other assets	(23,396)	(18,872)
Total gross deferred tax assets	363,933	504,837
Valuation allowance	(238,668)	(289,642)
Total deferred tax assets	125,265	215,195
Deferred Tax Liabilities, Gross [Abstract]
Intangible assets, principally due to different tax and financial reporting bases and amortization lives	(488,012)	(814,242)
Plant and equipment, principally due to differences in depreciation	(47,549)	(74,713)
Accounts receivable	(4,654)	(10,086)
Total gross deferred tax liabilities	(540,215)	(899,041)
Deferred Tax Assets, Net, Classification [Abstract]
Non-current deferred tax asset	23,891	26,327
Non-current deferred tax liability	(438,841)	(710,173)
Deferred Tax Liabilities, Net	$ (414,950)	$ (683,846)