Revenues - Schedule of Changes in the Deferred Revenue Balances (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Change in Contract with Customer, Liability [Abstract]
Beginning Balance	$ 1,381	$ 1,333
Revenue recognized that was included in the deferred revenue balance at the beginning of the period	(531)	(569)
Increases due to amounts billable excluding amounts recognized as revenue during the period	839	867
Effect of exchange rate changes	(16)	17
Total changes in deferred revenue	292	315
Ending Balance	1,673	1,648
Deferred revenue	1,612	1,578	$ 1,316
Non-current portion of deferred revenue	61	70	$ 65
MA
Change in Contract with Customer, Liability [Abstract]
Beginning Balance	1,111	1,055
Revenue recognized that was included in the deferred revenue balance at the beginning of the period	(437)	(471)
Increases due to amounts billable excluding amounts recognized as revenue during the period	652	688
Effect of exchange rate changes	(14)	16
Total changes in deferred revenue	201	233
Ending Balance	1,312	1,288
Deferred revenue	1,310	1,287
Non-current portion of deferred revenue	2	1
MIS
Change in Contract with Customer, Liability [Abstract]
Beginning Balance	270	278
Revenue recognized that was included in the deferred revenue balance at the beginning of the period	(94)	(98)
Increases due to amounts billable excluding amounts recognized as revenue during the period	187	179
Effect of exchange rate changes	(2)	1
Total changes in deferred revenue	91	82
Ending Balance	361	360
Deferred revenue	302	291
Non-current portion of deferred revenue	$ 59	$ 69