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Summary of Revenues Disaggregated Based on Timing of Revenue Recognition (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Total revenues |  | $ 35,478 |  | $ 821,817 | $ 588,068 |  | $ 2,494,296
U.S. Operating Segment |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Total revenues | [1] | 34,409 |  | 633,045 | 470,007 |  | 1,930,787
International Operating Segment |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Total revenues |  | 1,069 |  | 188,772 | 118,061 |  | 563,509
Goods and Services Transferred at a Point in Time |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Total revenues |  | 25,297 |  | 779,234 | 528,157 |  | 2,365,530
Goods and Services Transferred at a Point in Time | U.S. Operating Segment |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Total revenues | [1] | 24,945 |  | 610,063 | 426,476 |  | 1,860,828
Goods and Services Transferred at a Point in Time | International Operating Segment |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Total revenues |  | 352 |  | 169,171 | 101,681 |  | 504,702
Goods and Services Transferred Over Time |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Total revenues |  | 10,181 | [2] | 42,583 | 59,911 | [2] | 128,766
Goods and Services Transferred Over Time | U.S. Operating Segment |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Total revenues | [1] | 9,464 | [2] | 22,982 | 43,531 | [2] | 69,959
Goods and Services Transferred Over Time | International Operating Segment |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Total revenues |  | $ 717 | [2] | $ 19,601 | $ 16,380 | [2] | $ 58,807
[1] | U.S. segment revenues include eliminations of intercompany transactions with the international operating segment. See Note 17 for additional information on intercompany eliminations.
[2] | Amount includes amortization of NCM screen advertising advances. See Deferred Revenues below.

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