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Revenues - Schedule of Changes in the Deferred Revenue Balances (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Change in Contract with Customer, Liability [Abstract] |  |  |  |  |
Beginning Balance | $ 1,482 | $ 1,452 | $ 1,381 | $ 1,333 |
Revenue recognized that was included in the deferred revenue balance at the beginning of the period | (671) | (626) | (1,147) | (1,161) |
Increases due to amounts billable excluding amounts recognized as revenue during the period | 502 | 492 | 1,098 | 1,126 |
Increases due to acquisitions during the period | 5 | 0 | 5 | 0 |
Effect of exchange rate changes | 41 | (27) | 22 | (7) |
Total changes in deferred revenue | (123) | (161) | (22) | (42) |
Ending Balance | 1,359 | 1,291 | 1,359 | 1,291 |
Deferred revenue | 1,300 | 1,226 | 1,300 | 1,226 | $ 1,316
Non-current portion of deferred revenue | 59 | 65 | 59 | 65 | $ 65
MA |  |  |  |  |
Change in Contract with Customer, Liability [Abstract] |  |  |  |  |
Beginning Balance | 1,146 | 1,116 | 1,111 | 1,055 |
Revenue recognized that was included in the deferred revenue balance at the beginning of the period | (551) | (513) | (950) | (969) |
Increases due to amounts billable excluding amounts recognized as revenue during the period | 410 | 410 | 860 | 908 |
Increases due to acquisitions during the period | 5 | 0 | 5 | 0 |
Effect of exchange rate changes | 37 | (25) | 21 | (6) |
Total changes in deferred revenue | (99) | (128) | (64) | (67) |
Ending Balance | 1,047 | 988 | 1,047 | 988 |
Deferred revenue | 1,047 | 986 | 1,047 | 986 |
Non-current portion of deferred revenue | 0 | 2 | 0 | 2 |
MIS |  |  |  |  |
Change in Contract with Customer, Liability [Abstract] |  |  |  |  |
Beginning Balance | 336 | 336 | 270 | 278 |
Revenue recognized that was included in the deferred revenue balance at the beginning of the period | (120) | (113) | (197) | (192) |
Increases due to amounts billable excluding amounts recognized as revenue during the period | 92 | 82 | 238 | 218 |
Increases due to acquisitions during the period | 0 | 0 | 0 | 0 |
Effect of exchange rate changes | 4 | (2) | 1 | (1) |
Total changes in deferred revenue | (24) | (33) | 42 | 25 |
Ending Balance | 312 | 303 | 312 | 303 |
Deferred revenue | 253 | 240 | 253 | 240 |
Non-current portion of deferred revenue | $ 59 | $ 63 | $ 59 | $ 63 |

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