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Segment and Geographic Information - Segment Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment information
Revenue	$ 11,181	$ 8,297	$ 7,442
Operating Profit	4,944	4,221	3,617
Equity in income on unconsolidated subsidiaries	27	0	0
Pre-tax gain (loss) on dispositions	1,898	11	16
Lease-related costs	147	124	144
Amortization of intangibles	905	96	123
Lease impairment charges	132	31	120
IHS Markit Ltd
Segment information
Acquisition-related costs	619	249
Ratings
Segment information
Lease-related costs			5
Operating segments
Segment information
Operating Profit	5,906	4,647	3,936
Operating segments | Market Intelligence
Segment information
Revenue	3,811	2,185	2,046
Operating Profit	2,488	676	569
Pre-tax gain (loss) on dispositions	1,800	3	12
Severance charges	90	3	27
Acquisition-related costs	2	2
Lease-related costs		1	3
Amortization of intangibles	474	65	76
Operating segments | Market Intelligence | IHS Markit Ltd
Segment information
Acquisition-related costs	35
Operating segments | Ratings
Segment information
Revenue	3,050	4,097	3,606
Operating Profit	1,672	2,629	2,223
Pre-tax gain (loss) on dispositions		6
Severance charges	24	3	4
Amortization of intangibles	7	10	7
Legal settlement expenses	5
Asset write-off	1
Recovery of lease-related costs		4
Technology-related impairment charge			11
Operating segments | Commodity Insights
Segment information
Revenue	1,685	1,012	938
Operating Profit	591	544	478
Severance charges	45		11
Lease-related costs			2
Amortization of intangibles	111	8	9
Recovery of lease-related costs		2
Operating segments | Commodity Insights | IHS Markit Ltd
Segment information
Acquisition-related costs	26
Operating segments | Mobility
Segment information
Revenue	1,142	0	0
Operating Profit	213	0	0
Severance charges	4
Amortization of intangibles	241
Gain related to an acquisition	14
Operating segments | Mobility | IHS Markit Ltd
Segment information
Acquisition-related costs	3
Operating segments | Indices
Segment information
Revenue	1,339	1,149	989
Operating Profit	927	798	666
Pre-tax gain (loss) on dispositions	52
Severance charges	14		5
Lease-related costs			1
Amortization of intangibles	31	6	6
Recovery of lease-related costs		1
Technology-related impairment charge			2
Lease impairment charges			4
Operating segments | Indices | IHS Markit Ltd
Segment information
Acquisition-related costs	2
Operating segments | Engineering Solutions
Segment information
Revenue	323	0	0
Operating Profit	15	0	0
Severance charges	4
Amortization of intangibles	35
Intersegment Elimination
Segment information
Revenue	(169)	(146)	(137)
Corporate Unallocated expense
Segment information
Operating Profit	(989)	(426)	(319)
Equity in income on unconsolidated subsidiaries	27	0	0
Pre-tax gain (loss) on dispositions		2
Severance charges	107	13	19
Acquisition-related costs	8	2
Lease-related costs		4
Amortization of intangibles	4	7	26
Asset write-off	3
Gain related to an acquisition	10		1
Lease impairment charges	5	3	116
Foundation grant expense	200
Non-cash acquisition and disposition-related costs/adjustments	24	2	12
Asset impairment	9
Equity method investments, amortization of intangible assets	55
Corporate Unallocated expense | IHS Markit Ltd
Segment information
Acquisition-related costs	$ 553	$ 249	$ 24

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