LEASES - Lease costs (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2023 |
Mar. 31, 2022 |
|
| Lessee, Lease, Description [Line Items] | ||
| Interest expense on lease liabilities | $ 0.9 | $ 1.2 |
| Total lease cost | 225.1 | 243.1 |
| Depreciation and amortization | ||
| Lessee, Lease, Description [Line Items] | ||
| Amortization of finance lease assets | 0.5 | 0.7 |
| Finance lease obligations | ||
| Lessee, Lease, Description [Line Items] | ||
| Interest expense on lease liabilities | 0.9 | 1.2 |
| 58 Theatres | Rent | ||
| Lessee, Lease, Description [Line Items] | ||
| Operating lease cost | 184.2 | 202.5 |
| Variable lease cost | 21.5 | 20.7 |
| 58 Theatres | Operating expense (income) | ||
| Lessee, Lease, Description [Line Items] | ||
| Operating lease cost | 0.3 | 1.2 |
| Equipment | Operating expense (income) | ||
| Lessee, Lease, Description [Line Items] | ||
| Operating lease cost | 3.1 | 2.8 |
| Variable lease cost | 13.3 | 12.6 |
| Office And Other | General and administrative: other | ||
| Lessee, Lease, Description [Line Items] | ||
| Operating lease cost | $ 1.3 | $ 1.4 |