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Restructuring and Related Charges Restructuring and Related Charges (Additional Information) (Details) - USD ($)
$ in Millions
Sep. 20, 2019
Aug. 31, 2019
2017 Restructuring Plan    
Restructuring Cost and Reserve [Line Items]    
Total pre-tax restructuring and other related costs expected to be recognized   $ 195.0
2020 Restructuring Plan | Subsequent Event    
Restructuring Cost and Reserve [Line Items]    
Total pre-tax restructuring and other related costs expected to be recognized $ 85.0