Stock-Based Compensation	9 Months Ended
	Sep. 30, 2023
Share-Based Payment Arrangement [Abstract]
Stock-Based Compensation	Stock-Based CompensationWe issue stock-based incentive awards to our eligible employees under the 2019 Employee Stock Incentive Plan and to our eligible non-employee members of the Board of Directors under a Director Deferred Stock Ownership Plan. Total stock-based compensation expense related to restricted stock and other stock-based awards was $143 million for the nine months ended September 30, 2023 and $160 million for the nine months ended September 30, 2022. Stock-based compensation expense for the nine months ended September 30, 2022 primarily related to the early vesting of IHS Markit equity awards as a result of employee terminations and restructuring efforts. During the nine months ended September 30, 2023, the Company granted 0.5 million shares of restricted stock and other stock-based awards, which had a weighted average grant date fair value of $340.95 per share. Total unrecognized compensation expense related to unvested equity awards as of September 30, 2023 was $195 million, which is expected to be recognized over a weighted average period of 1.3 years.