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Supplemental Disclosures of Cash Flow Information - Cash Flow (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Cash and Cash Equivalents [Abstract]      
Interest paid $ 169.2 $ 139.2 $ 124.8
Income taxes paid, net $ 22.2 $ 68.1 $ 55.8