ACQUISTIONS - Intangible assets (Details) - USD ($) $ in Millions |
Mar. 28, 2017 |
Dec. 31, 2019 |
Dec. 31, 2018 |
|---|---|---|---|
| Amortizable Intangible Assets: | |||
| Gross Carrying Amount | $ 52.5 | $ 258.5 | |
| Nordic | |||
| Amortizable Intangible Assets: | |||
| Weighted Average Amortization Period | 5 years 6 months | ||
| Gross Carrying Amount | $ 11.6 | ||
| Unamortized Intangible Assets: | |||
| Trade names | $ 10.5 | $ 10.5 | 10.7 |
| Favorable leases | |||
| Amortizable Intangible Assets: | |||
| Gross Carrying Amount | $ 206.0 | ||
| Favorable leases | Nordic | |||
| Amortizable Intangible Assets: | |||
| Weighted Average Amortization Period | 7 years | ||
| Gross Carrying Amount | $ 3.5 | ||
| Favorable sublease | Nordic | |||
| Amortizable Intangible Assets: | |||
| Weighted Average Amortization Period | 4 years | ||
| Gross Carrying Amount | $ 1.1 | ||
| Screen advertising agreement | Nordic | |||
| Amortizable Intangible Assets: | |||
| Weighted Average Amortization Period | 5 years | ||
| Gross Carrying Amount | $ 6.6 | ||
| Trade name agreement | Nordic | |||
| Amortizable Intangible Assets: | |||
| Weighted Average Amortization Period | 4 years | ||
| Gross Carrying Amount | $ 0.4 |