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Revenue from Contracts with Customers - Disaggregation of Revenue from Contracts with Customers (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue [Line Items]
Revenue	$ 430	$ 491	$ 926	$ 982
Americas
Disaggregation of Revenue [Line Items]
Revenue	249	274	539	537
EMEA
Disaggregation of Revenue [Line Items]
Revenue	103	128	232	275
APJ
Disaggregation of Revenue [Line Items]
Revenue	78	89	155	170
Recurring
Disaggregation of Revenue [Line Items]
Revenue	345	376	731	748
Recurring | Americas
Disaggregation of Revenue [Line Items]
Revenue	215	233	461	451
Recurring | EMEA
Disaggregation of Revenue [Line Items]
Revenue	75	86	164	187
Recurring | APJ
Disaggregation of Revenue [Line Items]
Revenue	55	57	106	110
Perpetual software licenses, hardware and other
Disaggregation of Revenue [Line Items]
Revenue	8	17	34	40
Perpetual software licenses, hardware and other | Americas
Disaggregation of Revenue [Line Items]
Revenue	3	4	15	11
Perpetual software licenses, hardware and other | EMEA
Disaggregation of Revenue [Line Items]
Revenue	3	7	14	20
Perpetual software licenses, hardware and other | APJ
Disaggregation of Revenue [Line Items]
Revenue	2	6	5	9
Consulting services
Disaggregation of Revenue [Line Items]
Revenue	77	98	161	194
Consulting services | Americas
Disaggregation of Revenue [Line Items]
Revenue	31	37	63	75
Consulting services | EMEA
Disaggregation of Revenue [Line Items]
Revenue	25	35	54	68
Consulting services | APJ
Disaggregation of Revenue [Line Items]
Revenue	$ 21	$ 26	$ 44	$ 51

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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