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Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parenthetical) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Statement of Stockholders' Equity [Abstract]        
Loss on cash flow hedges, tax benefit $ 0.4 $ 0.0 $ 0.7 $ 0.0