Stockholders' Equity - Schedule of Adjustments to Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Accumulated Other Comprehensive Income Loss [Line Items]
Other comprehensive (loss) income, Pretax	$ (154.7)	$ 42.0
Other comprehensive (loss) income, Tax Effect	1.6	(0.2)
Interest Rate Swap [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Other comprehensive income (loss), before reclassifications, Pretax	(1.5)
Reclassification of losses into net earnings on interest rate swaps, Pretax	(1.7)
Other comprehensive (loss) income, Pretax	(3.2)
Other comprehensive income (loss) before reclassifications, Tax Effect	0.8
Other comprehensive (loss) income, Tax Effect	0.8
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Other comprehensive income (loss), before reclassifications, Pretax	(151.5)	42.0
Other comprehensive (loss) income, Pretax	(151.5)	42.0
Other comprehensive income (loss) before reclassifications, Tax Effect	0.8	(0.2)
Other comprehensive (loss) income, Tax Effect	$ 0.8	$ (0.2)