Commitments and Contingent Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Rent expense for operating leases	$ 93,015	$ 90,138	$ 84,801
Product Warranty Expense	62,472	84,997	44,466	$ 49,388
Standard Product Warranty Accrual, Decrease for Payments	73,164	35,638	55,715
Provision for warranties	57,472	68,566	$ 51,392
Accrual for environmental loss contingencies	35,353	29,959
Leases, Operating [Abstract]
Operating Lease 2017	72,220
Operating Lease 2018	53,878
Operating Lease 2019	38,691
Operating Lease 2020	26,947
Operating Lease 2021	21,793
Operating Lease 2022 and thereafter	57,185
Operating Leases, Future Minimum Payments Due	270,714
Leases, Capital [Abstract]
Capital Lease 2017	3,454
Capital Lease 2018	2,951
Capital Lease 2019	1,448
Capital Lease 2020	1,212
Capital Lease 2021	1,150
Capital Lease 2022 and thereafter	5,062
Capital Leases, Future Minimum Payments Due	15,277
Damages from Product Defects [Member]
Product Warranty Expense	6,613	$ 23,150
Standard Product Warranty Accrual, Decrease for Payments	9,337
Provision for warranties	$ 7,200