Pension Plans and Other Postretirement Benefits Components of Pension and Postretirement Benefits Expense (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016		Dec. 31, 2015		Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Actuarial loss (gain)	$ 26,700	$ (30,100)
U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost			$ 1,028		$ 1,233		$ 7,029
Interest cost			30,514		30,235		30,491
Expected return on assets			(36,445)		(40,495)		(39,714)
Actuarial loss (gain)			5,988		2,665		116,705
Amortization of prior service benefit			75		75		(727)
Total net pension benefits cost (credit)			$ 1,160	[1]	$ (6,287)	[1]	$ 113,784
Weighted-average assumption percentages:
Discount rate			4.67%		4.19%		5.14%
Expected return on plan assets			6.89%		6.88%		6.91%
Rate of compensation increase			0.00%		0.00%		3.50%
Foreign Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost			$ 3,133		$ 3,909		$ 1,746
Interest cost			6,570		6,405		1,571
Expected return on assets			(4,027)		(3,670)		(427)
Actuarial loss (gain)			19,418		(27,043)		10,270
Amortization of prior service benefit			859		43		50
Total net pension benefits cost (credit)			$ 25,953	[1]	$ (20,356)	[1]	$ 13,210
Weighted-average assumption percentages:
Discount rate			2.76%		2.22%		3.41%
Expected return on plan assets			6.66%		5.76%		4.00%
Rate of compensation increase			3.16%		3.15%		3.16%
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost			$ 115		$ 137		$ 216
Interest cost			2,483		2,573		3,040
Expected return on assets			(187)		(263)		(342)
Actuarial loss (gain)			1,275		(5,707)		3,868
Amortization of prior service benefit			(95)		(95)		(95)
Total net pension benefits cost (credit)			$ 3,591		(3,355)	[2]	$ 6,687
Net pension or postretirement benefits credit					$ 2,600
Weighted-average assumption percentages:
Discount rate			4.59%		4.15%		5.03%
Expected return on plan assets			7.00%		7.00%		7.00%
Rate of compensation increase			3.50%		3.50%		3.50%
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Net pension or postretirement benefits credit			$ 10,800		$ 6,200

[1] For the years ended December 31, 2016 and 2015, $10.8 million and $6.2 million, respectively, of net pension benefits credit is included in Income (loss) from discontinued operations (net of tax) in the consolidated statements of income. See Note 3, “Divestitures,” for additional information.

[2] For the year ended December 31, 2015, $2.6 million of net postretirement benefits credit is included in Income (loss) from discontinued operations (net of tax) in the consolidated statements of income. See Note 3, “Divestitures,” for additional information.