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Deferred Revenue (Changes in Deferred Revenue) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)
Change in Contract with Customer Liability [Roll Forward]
Beginning balance	$ 448
Additions	340
Revenue Recognized	(327)
Adjustments	(13)
Ending balance	448
Market Technology
Change in Contract with Customer Liability [Roll Forward]
Beginning balance	36
Additions	28
Revenue Recognized	(30)
Adjustments	(5)
Ending balance	29
Initial Listing
Change in Contract with Customer Liability [Roll Forward]
Beginning balance	145
Additions	25
Revenue Recognized	(51)
Adjustments	(3)
Ending balance	116
Annual Listings
Change in Contract with Customer Liability [Roll Forward]
Beginning balance	2
Additions	3
Revenue Recognized	(2)
Adjustments	(1)
Ending balance	2
Workflow & Insights
Change in Contract with Customer Liability [Roll Forward]
Beginning balance	159
Additions	166
Revenue Recognized	(152)
Adjustments	(1)
Ending balance	172
Anti-Financial Crime
Change in Contract with Customer Liability [Roll Forward]
Beginning balance	81
Additions	106
Revenue Recognized	(79)
Adjustments	0
Ending balance	108
Other
Change in Contract with Customer Liability [Roll Forward]
Beginning balance	25
Additions	12
Revenue Recognized	(13)
Adjustments	(3)
Ending balance	$ 21

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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130531-203044

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130549-203045

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130532-203044

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130549-203045

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