Income Taxes (Income Tax Reconciliation) (Details 3) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	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 Taxes [Line Items]
U.S. Federal taxes at statutory rate									$ 87,731	$ (42,311)	$ 377,196
State and local taxes, net of U.S. Federal tax									(2,965)	(3,441)	38,106
Tax-free stock transactions									0	0	(91,540)
Tax provided on non-U.S. subsidiary earnings and distributions at more (less) than the expected U.S. Federal statutory tax rate									1,993	2,688	2,186
Goodwill impairments and dispositions									(5,631)	63,889	0
U.S. Federal Manufacturing Deducation tax benefits									(6,012)	(625)	(6,789)
Write-off of deferred taxes related to intercompany loans									10,965	0	0
Other, net									4,611	3,154	578
Total provision for income tax	$ 27,200	$ 7,800	$ 23,800	$ 22,400	$ 30,500	$ (30,500)	$ 19,600	$ 900	81,200	20,500	312,300
State [Member]
Income Taxes [Line Items]
Valuation allowance against tax benefits									3,196	(3,285)	(4,960)
non-U.S. [Member]
Income Taxes [Line Items]
Valuation allowance against tax benefits									$ (12,688)	$ 431	$ (2,477)