Accumulated Other Comprehensive Income (Loss) (Reclassifications) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenues	$ 821,371	$ 835,886	$ 1,658,011	$ 1,680,475
Interest expense, net	(27,600)	(20,799)	(53,276)	(40,100)
Selling, general and administrative	(297,468)	(289,116)	(603,771)	(615,998)
Income before income taxes	53,853	93,238	150,402	192,902
Benefit provision for income tax	(4,952)	(33,394)	(36,368)	(70,418)
Net income	48,901	58,184	114,034	120,824
Reclassification out of Accumulated Other Comprehensive Loss | Cash flow hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenues	34	(353)	6	(733)
Cost of sales	36	145	148	370
Interest expense, net	(507)	(507)	(1,014)	(1,014)
Income before income taxes	(437)	(715)	(860)	(1,377)
Benefit provision for income tax	170	277	336	535
Net income	(267)	(438)	(524)	(842)
Reclassification out of Accumulated Other Comprehensive Loss | Available for sale securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense, net	(117)	(19)	(226)	(1)
Benefit provision for income tax	44	7	84	0
Net income	(73)	(12)	(142)	(1)
Reclassification out of Accumulated Other Comprehensive Loss | Pension and postretirement benefit plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes	(10,066)	(9,400)	(20,291)	(19,947)
Benefit provision for income tax	3,442	4,122	6,956	7,919
Net income	(6,624)	(5,278)	(13,335)	(12,028)
Reclassification out of Accumulated Other Comprehensive Loss | Transition credit
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Selling, general and administrative	2	2	4	4
Reclassification out of Accumulated Other Comprehensive Loss | Prior service costs
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Selling, general and administrative	(42)	(41)	(83)	(83)
Reclassification out of Accumulated Other Comprehensive Loss | Actuarial losses
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Selling, general and administrative	$ (10,026)	$ (9,361)	$ (20,212)	$ (19,868)