CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 360,599	$ 290,071	[1]
Other comprehensive income, net of income taxes
Net gain (loss) from foreign currency translation	(117,754)	82,252
Retirement and postretirement benefit plan	2,738	2,708
Deferred loss on interest rate hedges:
Reduction of deferred loss on interest rate hedge	0	2,983
Amount of loss reclassified to interest expense in consolidated statements of income	486	0
Other comprehensive income (loss)	(114,530)	87,943
COMPREHENSIVE INCOME	$ 246,069	$ 378,014

[1] Reclassified to conform to current presentation.