LEASES - Lease costs (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2022 |
Mar. 31, 2021 |
|
| Lessee, Lease, Description [Line Items] | ||
| Interest expense on lease liabilities | $ 1.2 | $ 1.4 |
| Total lease cost | 243.1 | 199.5 |
| Depreciation and amortization | ||
| Lessee, Lease, Description [Line Items] | ||
| Amortization of finance lease assets | 0.7 | 1.3 |
| Finance lease obligations | ||
| Lessee, Lease, Description [Line Items] | ||
| Interest expense on lease liabilities | 1.2 | 1.4 |
| Theatres | Rent | ||
| Lessee, Lease, Description [Line Items] | ||
| Operating lease cost | 202.5 | 175.5 |
| Variable lease cost | 20.7 | 16.6 |
| Theatres | Operating expense (income) | ||
| Lessee, Lease, Description [Line Items] | ||
| Operating lease cost | 1.2 | 0.8 |
| Equipment | Operating expense (income) | ||
| Lessee, Lease, Description [Line Items] | ||
| Operating lease cost | 2.8 | 2.3 |
| Variable lease cost | 12.6 | 0.2 |
| Office And Other | General and administrative: other | ||
| Lessee, Lease, Description [Line Items] | ||
| Operating lease cost | $ 1.4 | $ 1.4 |