Other Investments- Summary of Transactions with Each of the Company's Other Investees (Detail) (Parenthetical)
$ in Millions
|3 Months Ended|
Mar. 31, 2021
|Digital Cinema Distribution Coalition [Member]|
|Schedule of Equity Method Investments [Line Items]|
|Lease Termination Payment||$ 1.0|
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
No definition available.