Stock-Based Compensation	3 Months Ended
	Mar. 31, 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. For the three months ended March 31, 2023 and 2022, total stock-based compensation expense related to restricted stock and other stock-based awards was $46 million and $94 million, respectively. Stock-based compensation expense for the three months ended March 31, 2022 primarily related to the early vesting of IHS Markit equity awards as a result of employee terminations and restructuring efforts. During the three months ended March 31, 2023, the Company granted 0.4 million shares of restricted stock and other stock-based awards, which had a weighted average grant date fair value of $338.29 per share. Total unrecognized compensation expense related to unvested equity awards as of March 31, 2023 was $259 million, which is expected to be recognized over a weighted average period of 1.8 years.