Other Comprehensive Income (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Accumulated Other Comprehensive Income (Loss), by Component [Roll Forward]
Balance at Beginning of Period	$ (26,892,000)	$ (28,416,000)
Other comprehensive income (loss) before reclassification	(26,915,000)	32,569,000
Amounts reclassified from accumulated other comprehensive loss	2,642,000	(231,000)
Other comprehensive income (loss)	(24,273,000)	32,338,000
Balance at End of Period	(51,165,000)	3,922,000
Pension and other postretirement benefit plans
Tax provision	54,269,000	19,524,000
Net of tax	2,642,000	(231,000)
Pension and Other Post-Employment Benefits
Accumulated Other Comprehensive Income (Loss), by Component [Roll Forward]
Balance at Beginning of Period	(109,778,000)	(99,603,000)
Other comprehensive income (loss) before reclassification	539,000	0
Amounts reclassified from accumulated other comprehensive loss	2,642,000	(231,000)
Other comprehensive income (loss)	3,181,000	(231,000)
Balance at End of Period	(106,597,000)	(99,834,000)
Pension and other postretirement benefit plans
Tax provision	1,700,000	0
Net of tax	2,642,000	(231,000)
Pension and Other Post-Employment Benefits | Selling, General and Administrative Expenses
Pension and other postretirement benefit plans
Amortization of actuarial losses	4,300,000	(200,000)
Foreign Currency Items
Accumulated Other Comprehensive Income (Loss), by Component [Roll Forward]
Balance at Beginning of Period	102,678,000	91,319,000
Other comprehensive income (loss) before reclassification	(27,405,000)	29,570,000
Amounts reclassified from accumulated other comprehensive loss	0	0
Other comprehensive income (loss)	(27,405,000)	29,570,000
Balance at End of Period	75,273,000	120,889,000
Pension and other postretirement benefit plans
Net of tax	0	0
Unrealized Losses on Terminated Net Investment Hedges
Accumulated Other Comprehensive Income (Loss), by Component [Roll Forward]
Balance at Beginning of Period	(19,403,000)	(19,403,000)
Other comprehensive income (loss) before reclassification	0	0
Amounts reclassified from accumulated other comprehensive loss	0	0
Other comprehensive income (loss)	0	0
Balance at End of Period	(19,403,000)	(19,403,000)
Pension and other postretirement benefit plans
Net of tax	0	0
Unrealized Gains on Available for Sale Securities
Accumulated Other Comprehensive Income (Loss), by Component [Roll Forward]
Balance at Beginning of Period		276,000
Other comprehensive income (loss) before reclassification		3,086,000
Amounts reclassified from accumulated other comprehensive loss		0
Other comprehensive income (loss)		3,086,000
Balance at End of Period		3,362,000
Pension and other postretirement benefit plans
Net of tax		0
Other
Accumulated Other Comprehensive Income (Loss), by Component [Roll Forward]
Balance at Beginning of Period	(389,000)	(1,005,000)
Other comprehensive income (loss) before reclassification	(100,000)	(200,000)
Amounts reclassified from accumulated other comprehensive loss	0	0
Other comprehensive income (loss)	(100,000)	(200,000)
Balance at End of Period	(500,000)	(1,200,000)
Pension and other postretirement benefit plans
Net of tax	$ 0	$ 0