v3.26.1
REVENUES - Schedule of Changes in the Deferred Revenue Balances (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Change in Contract with Customer, Liability [Abstract]          
Beginning Balance $ 1,874 $ 1,822 $ 1,638 $ 1,511  
Revenue recognized that was included in the deferred revenue balance at the beginning of the period (791) (685) (1,128) (1,015)  
Increases due to amounts billable excluding amounts recognized as revenue during the period 559 451 1,164 1,044  
Increases due to acquisitions during the period     0 15  
Adjustment related to divestiture of business 5 0 (4) 0  
Effect of exchange rate changes 1 47 (22) 80  
Total changes in deferred revenue (226) (187) 10 124  
Ending Balance 1,648 1,635 1,648 1,635  
Deferred revenue 1,595 1,578 1,595 1,578 $ 1,582
Non-current portion of deferred revenue 53 57 53 57 $ 56
MA          
Change in Contract with Customer, Liability [Abstract]          
Beginning Balance 1,506 1,462 1,368 1,243  
Revenue recognized that was included in the deferred revenue balance at the beginning of the period (665) (562) (967) (846)  
Increases due to amounts billable excluding amounts recognized as revenue during the period 453 346 924 804  
Increases due to acquisitions during the period     0 15  
Adjustment related to divestiture of business 5 0 (4) 0  
Effect of exchange rate changes 2 39 (20) 69  
Total changes in deferred revenue (205) (177) (67) 42  
Ending Balance 1,301 1,285 1,301 1,285  
Deferred revenue 1,300 1,284 1,300 1,284  
Non-current portion of deferred revenue 1 1 1 1  
MIS          
Change in Contract with Customer, Liability [Abstract]          
Beginning Balance 368 360 270 268  
Revenue recognized that was included in the deferred revenue balance at the beginning of the period (126) (123) (161) (169)  
Increases due to amounts billable excluding amounts recognized as revenue during the period 106 105 240 240  
Increases due to acquisitions during the period     0 0  
Adjustment related to divestiture of business 0 0 0 0  
Effect of exchange rate changes (1) 8 (2) 11  
Total changes in deferred revenue (21) (10) 77 82  
Ending Balance 347 350 347 350  
Deferred revenue 295 294 295 294  
Non-current portion of deferred revenue $ 52 $ 56 $ 52 $ 56