Property and Equipment, Net (Details) - USD ($) $ in Millions |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
|
Property Plant And Equipment [Line Items] | |||
Depreciation expense | $ 707.9 | $ 627.7 | $ 534.9 |
Repairs and maintenance expenses including Dry-dock expenses | 129.9 | 199.7 | 199.5 |
Interest costs capitalized | 25.2 | $ 32.9 | $ 30.4 |
Ships improvements | |||
Property Plant And Equipment [Line Items] | |||
Costs associated with ship improvements | $ 341.5 |