Summary of Significant Accounting Policies - Schedule of Accumulated Other Comprehensive (Loss) Income (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Accumulated Other Comprehensive (Loss) Income, before Taxes	$ (186,238)	$ (127,612)	$ 8,717
Income tax benefit	95,199	87,269	64,909
Total accumulated other comprehensive (loss) income	(91,039)	(40,343)	73,626
Translation adjustment
Accumulated Other Comprehensive (Loss) Income, before Taxes	68,393	104,781	181,856
Foreign currency hedges
Accumulated Other Comprehensive (Loss) Income, before Taxes	(7,827)	(10,848)	(12,616)
Interest rate hedges
Accumulated Other Comprehensive (Loss) Income, before Taxes	(2,169)	(2,088)	(927)
Pensions and other postretirement benefits
Accumulated Other Comprehensive (Loss) Income, before Taxes	(243,872)	(220,081)	(158,079)
Unrealized gain (loss) on available-for-sale securities, net
Accumulated Other Comprehensive (Loss) Income, before Taxes	119	1,338	(1,297)
Other
Accumulated Other Comprehensive (Loss) Income, before Taxes	$ (882)	$ (714)	$ (220)