Segment and Geographic Information - Segment Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment information
Revenue	$ 12,497	$ 11,181	$ 8,297
Operating Profit	4,020	4,944	4,221
Equity in income on unconsolidated subsidiaries	36	27	0
Gain (loss) on dispositions	(70)	1,898	11
Lease-related costs	134	147	124
Amortization of intangibles	1,042	905	96
Lease impairment charges	26	132	31
Equity method investments, asset impairment	2
IHS Markit Ltd
Segment information
Acquisition-related costs	236	619	249
Operating segments
Segment information
Operating Profit	4,486	5,906	4,647
Asset impairment	5
Operating segments | Market Intelligence
Segment information
Revenue	4,376	3,811	2,185
Operating Profit	714	2,488	676
Severance charges	90	90	3
Gain (loss) on dispositions	46	1,800	3
Acquisition-related costs	69	2	2
Asset write-off	1
Lease-related costs			1
Amortization of intangibles	561	474	65
Operating segments | Market Intelligence | IHS Markit Ltd
Segment information
Acquisition-related costs	49	35
Operating segments | Ratings
Segment information
Revenue	3,332	3,050	4,097
Operating Profit	1,864	1,672	2,629
Severance charges	10	24	3
Gain (loss) on dispositions			6
Asset impairment	1
Asset write-off		1
Amortization of intangibles	8	7	10
Legal settlement expenses		5
Recovery of lease-related costs			4
Operating segments | Commodity Insights
Segment information
Revenue	1,946	1,685	1,012
Operating Profit	704	591	544
Severance charges	26	45
Acquisition-related costs	2
Amortization of intangibles	131	111	8
Recovery of lease-related costs			2
Operating segments | Commodity Insights | IHS Markit Ltd
Segment information
Acquisition-related costs	35	26
Operating segments | Mobility
Segment information
Revenue	1,484	1,142	0
Operating Profit	260	213	0
Severance charges	9	4
Acquisition-related costs	2
Amortization of intangibles	301	241
Acquisition-related benefit		14
Operating segments | Mobility | IHS Markit Ltd
Segment information
Acquisition-related costs	3	3
Operating segments | Indices
Segment information
Revenue	1,403	1,339	1,149
Operating Profit	925	927	798
Severance charges	5	14
Gain (loss) on dispositions	4	52
Amortization of intangibles	36	31	6
Recovery of lease-related costs			1
Operating segments | Indices | IHS Markit Ltd
Segment information
Acquisition-related costs	4	2
Operating segments | Engineering Solutions
Segment information
Revenue	133	323	0
Operating Profit	19	15	0
Severance charges		4
Amortization of intangibles	1	35
Intersegment Elimination
Segment information
Revenue	(177)	(169)	(146)
Corporate Unallocated expense
Segment information
Operating Profit	(502)	(989)	(426)
Equity in income on unconsolidated subsidiaries	36	27	0
Severance charges	43	107	13
Gain (loss) on dispositions	(120)		2
Asset impairment		9
Acquisition-related costs	4	8	2
Asset write-off		3
Lease-related costs			4
Amortization of intangibles	3	4	7
Acquisition-related benefit		10
Non-cash acquisition and disposition-related costs/adjustments	24	24	2
Lease impairment charges	14	5	3
Foundation grant expense		200
Equity method investments, amortization of intangible assets	56	55
Corporate Unallocated expense | IHS Markit Ltd
Segment information
Acquisition-related costs	$ 147	$ 553	$ 249