Condensed Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net income	$ 131,300	$ 93,200	$ 160,300	$ 22,300
Other comprehensive income (loss):
Change in derivative instruments designated as cash flow hedges, net of tax	(400)	(1,200)	1,300	1,600
Foreign currency translation adjustments	(18,000)	8,000	(14,600)	(700)
Benefit plan adjustments, net of tax	1,700	2,200	4,900	6,600
Other comprehensive income (loss)	(16,700)	9,000	(8,400)	7,500
Comprehensive income	$ 114,600	$ 102,200	$ 151,900	$ 29,800