Consolidated Statements of Income (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Revenue	$ 2,993	$ 2,106	$ 5,383	$ 4,122
Expenses:
Operating-related expenses	1,011	533	1,760	1,055
Selling and general expenses	764	374	1,722	740
Depreciation	36	23	62	42
Amortization of intangibles	267	22	379	53
Total expenses	2,078	952	3,923	1,890
Gain on dispositions	(556)	0	(1,899)	(2)
Equity in income on unconsolidated subsidiaries	(11)	0	(15)	0
Operating profit	1,482	1,154	3,374	2,234
Other income, net	(1)	(22)	(50)	(29)
Interest expense, net	90	32	147	63
Loss on extinguishment of debt, net	2	0	19	0
Income before taxes on income	1,391	1,144	3,258	2,200
Provision for taxes on income	340	287	908	534
Net income	1,051	857	2,350	1,666
Less: net income attributable to noncontrolling interests	(79)	(59)	(143)	(113)
Net income attributable to S&P Global Inc.	$ 972	$ 798	$ 2,207	$ 1,553
Earnings per share attributable to S&P Global Inc. common shareholders:
Basic (USD per share)	$ 2.87	$ 3.31	$ 7.19	$ 6.45
Diluted (USD per share)	$ 2.86	$ 3.30	$ 7.17	$ 6.42
Weighted-average number of common shares outstanding:
Basic (shares)	338.0	240.8	306.8	240.7
Diluted (shares)	339.3	241.8	308.0	241.7
Actual shares outstanding at period end (shares)	336.2	241.0	336.2	241.0