Income Taxes (Details) - USD ($)		3 Months Ended		12 Months Ended
	Jun. 01, 2017	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Effective tax rate		17.60%	22.00%
Provisional reduction of income taxes				$ (607,900,000)
Reduction of deferred tax liabilities				560,200,000
Remeasurement of U.S. deferred tax liabilities on unremitted foreign earnings				47,700,000
Unrecognized tax benefits				59,000,000
Unrecognized tax benefits adjusted				49,500,000
Amount of unrecognized tax benefits where significant change is reasonably possible				5,200,000
Accrued income tax interest and penalties				$ 14,600,000
Increase (decrease) in accrued income tax interest and penalties		$ 0
Income tax refund receivable		$ 7,500,000
Valspar Corporation
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Unrecognized tax benefits acquired	$ 18,900,000