Other Comprehensive Income (Loss) (Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Selling, general and administrative expenses	$ 504,419	$ 477,851	$ 444,490
Interest expense	41,895	42,206	42,250
Provision for income taxes	(113,054)	(97,914)	(48,574)
Reclassification out of Accumulated Other Comprehensive Income | Pension and Other Postretirement Plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Selling, general and administrative expenses	3,113	8,599	7,801
Total before tax	3,113	8,599	7,801
Provision for income taxes	(915)	(3,226)	(1,460)
Total net of tax	2,198	5,373	6,341
Reclassification out of Accumulated Other Comprehensive Income | Derivatives
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	7,223	7,430	7,571
Total before tax	7,223	7,430	7,571
Provision for income taxes	(2,713)	(2,692)	(2,791)
Total net of tax	$ 4,510	$ 4,738	$ 4,780