Revenue Recognition - Summary of Consolidated Financial Information of our Operations by Geographic Location (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation Of Revenue [Line Items]
Net sales	$ 1,575.1	$ 831.5	$ 4,141.4	$ 2,613.6
United States [Member]
Disaggregation Of Revenue [Line Items]
Net sales	1,431.3	737.9	3,733.8	2,337.7
Foreign Countries [Member]
Disaggregation Of Revenue [Line Items]
Net sales	$ 143.8	$ 93.6	$ 407.6	$ 275.9