Operating Segments and Related Information Operating Segments and related information (Details 3) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Unallocated corporate expense	$ (22,488)	$ (25,016)	$ 57,435	$ 43,241
Amortization of purchased Intangible Assets	(6,099)	(7,016)	(12,086)	(13,751)
Amortization of acquisition-related inventory step-up	0	0	0	(1,992)
Loss on sale of business	0	0	10,178	0
Other	(3,758)	(2,013)	(3,262)	(2,101)
Consolidated earnings from operations	88,666	66,630	144,158	125,716
Other Nonoperating Expense	(5,713)	(3,090)	(6,590)	(6,612)
Consolidated earnings before income taxes	82,953	63,540	137,568	119,104
Total Segments [Member]
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Consolidated segment operating income	121,011	100,675
Total Segments [Member]
Business Unit Reporting, Revenue Reconciling Item [Line Items]
Consolidated segment operating income			227,119	186,801
Consolidated earnings from operations	$ 121,011	$ 100,675	$ 227,119	$ 186,801