Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended		12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Effective tax rate	25.00%		29.10%	22.30%	26.50%
Income taxes			$ 41,540		$ 41,540
Provisional reduction of income taxes						$ 607,900
Reduction of deferred tax liabilities						560,200
Remeasurement of U.S. deferred tax liabilities on unremitted foreign earnings						47,700
Unrecognized tax benefits		$ 59,000				59,000
Unrecognized tax benefits adjusted		49,500				49,500
Amount of unrecognized tax benefits where significant change is reasonably possible		5,200				5,200
Additional unrecognized tax benefits added				20,800
Accrued income tax interest and penalties		14,600				$ 14,600
Additional tax-related interest and penalties added	8,400			8,400
Income tax refund receivable	7,500			$ 7,500
Valspar Corporation
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reversal of income tax benefits	$ 27,500	$ 27,500