Accumulated Other Comprehensive Income (Loss) (Reclassifications) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenues	$ 836,640	$ 844,589
Interest expense, net	(25,676)	(19,301)
Selling, general and administrative	(306,303)	(326,882)
Income before income taxes	96,549	99,664
Benefit for income tax	31,416	37,024
Net income	65,133	62,640
Cash flow hedges | Reclassification out of Accumulated Other Comprehensive Loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenues	28	(380)
Cost of sales	(111)	225
Interest expense, net	(507)	(507)
Income before income taxes	(590)	(662)
Benefit for income tax	(230)	(258)
Net income	(360)	(404)
Available for sale securities | Reclassification out of Accumulated Other Comprehensive Loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense, net	(109)	18
Benefit for income tax	(40)	7
Net income	(69)	11
Transition credit | Reclassification out of Accumulated Other Comprehensive Loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Selling, general and administrative	2	2
Pension and postretirement benefit plans | Reclassification out of Accumulated Other Comprehensive Loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes	(10,225)	(10,547)
Benefit for income tax	(3,517)	(3,799)
Net income	(6,708)	(6,748)
Prior service costs | Reclassification out of Accumulated Other Comprehensive Loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Selling, general and administrative	(41)	(42)
Actuarial losses | Reclassification out of Accumulated Other Comprehensive Loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Selling, general and administrative	(10,186)	(9,409)
Settlements | Reclassification out of Accumulated Other Comprehensive Loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Selling, general and administrative	$ 0	$ (1,098)