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Commitments and Contingencies d (Details) - USD ($)
$ in Millions
Feb. 03, 2014
Sep. 30, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Tax settlement deductions under examination   $ 1,490.0
Decrease in U.S. federal tax liability   $ 525.0
William Russell Grace Asbestos PI Trust and William Russell Grace Asbestos PD Trust    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Original number of shares expected to be issued under settlement agreement adjusted 18,000,000  
North American Foam Trays and Absorbent Pads    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Proceeds from sale of business $ 929.7