LEASES - Minimum lease payments (Details) $ in Millions	Dec. 31, 2019 USD ($)
Minimum lease payments
2020, remaining	$ 72.4
2021	114.2
2022	98.1
2023	71.6
2024	60.9
Thereafter	226.4
Total future lease payments	643.6
Less: imputed interest	(80.1)
Total present value of lease liabilities	563.5
Current operating lease liabilities	109.3
Long-term operating lease liabilities	454.2
Total operating lease liabilities	$ 563.5