Leases - Summary of Balance Sheet Classifications of Operating and Finance Leases (Detail) $ in Millions	Dec. 31, 2019 USD ($)
Operating Leases:
Operating lease right-of-use assets	$ 481.9
Current operating lease liabilities	52.7
Noncurrent operating lease liabilities	433.9
Total operating lease liabilities	486.6
Finance Leases:
Property, plant and equipment	18.3
Accumulated depreciation	(3.1)
Property, plant and equipment, net	15.2
Other current liabilities	2.8
Other noncurrent liabilities	5.9
Total finance lease liabilities	$ 8.7