Other Comprehensive Income (Loss) (Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Selling, general and administrative expenses	$ (131,082)	$ (121,706)	$ (251,860)	$ (245,990)
Interest expense	(11,205)	(10,584)	(21,694)	(21,181)
Provision for income taxes	(27,886)	(28,913)	(52,568)	(55,842)
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	912	1,215	1,905	2,390
Total before tax	912	1,215	1,905	2,390
Provision for income taxes	(321)	(395)	(643)	(790)
Total net of tax	591	820	1,262	1,600
Reclassification out of Accumulated Other Comprehensive Income | Derivatives
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	1,719	1,767	3,443	3,539
Interest expense	1,719	1,767	3,443	3,539
Provision for income taxes	(626)	(641)	(1,253)	(1,283)
Total net of tax	$ 1,093	$ 1,126	$ 2,190	$ 2,256