Accumulated Other Comprehensive Loss (Changes) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance		$ (888,635)	$ (846,156)
Other comprehensive income (loss) before reclassifications	[1]	41,652	(70,711)
Amounts reclassified from accumulated other comprehensive loss	[1],[2]	7,141	8,220
Other comprehensive income (loss), net of tax		48,793	(62,491)
Ending Balance		(839,842)	(908,647)
Cash flow hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance		(3,912)	(4,689)
Other comprehensive income (loss) before reclassifications	[1]	(432)	(247)
Amounts reclassified from accumulated other comprehensive loss	[1],[2]	404	796
Other comprehensive income (loss), net of tax		(28)	549
Ending Balance		(3,940)	(4,140)
Available for sale securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance		536	2,966
Other comprehensive income (loss) before reclassifications	[1]	3,465	1,715
Amounts reclassified from accumulated other comprehensive loss	[1],[2]	(11)	15
Other comprehensive income (loss), net of tax		3,454	1,730
Ending Balance		3,990	4,696
Pension and postretirement benefit plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance		(738,768)	(786,079)
Other comprehensive income (loss) before reclassifications	[1]	(1,230)	0
Amounts reclassified from accumulated other comprehensive loss	[1],[2]	6,748	7,409
Other comprehensive income (loss), net of tax		5,518	7,409
Ending Balance		(733,250)	(778,670)
Foreign currency adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance		(146,491)	(58,354)
Other comprehensive income (loss) before reclassifications	[1]	39,849	(72,179)
Amounts reclassified from accumulated other comprehensive loss	[1],[2]	0	0
Other comprehensive income (loss), net of tax		39,849	(72,179)
Ending Balance		$ (106,642)	$ (130,533)

[1] Amounts are net of tax. Amounts in parentheses indicate debits to AOCL.

[2] See table above for additional details of these reclassifications.