CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net income	$ 129,300	$ 130,100	$ 401,900	$ 214,200
Other comprehensive income (loss), net of tax
Change in derivative instruments designated as cash flow hedges	100	(4,100)	2,100	(4,100)
Foreign currency translation adjustments	14,900	(9,400)	(24,300)	41,900
Benefit plan adjustments	1,800	1,300	5,200	3,900
Available-for-sale securities		2,100
Other comprehensive income (loss)	16,800	(10,100)	(17,000)	41,700
Comprehensive income	$ 146,100	$ 120,000	$ 384,900	$ 255,900