Leases - Operating Leases, Future Minimum Payment (Detail) $ in Millions	Jun. 30, 2019 USD ($)
Operating Leases, Future Minimum Payment [Abstract]
2019 (After June 30)	$ 54.8
2020	106.9
2021	100.5
2022	87.2
2023	81.7
Thereafter	248.1
Total minimum lease payments	679.2
Less: Interest	79.9
Present value of lease liabilities:	599.3
Lease liabilities - current	89.1
Lease liabilities - noncurrent	$ 510.2