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Deferred Contract Costs (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Capitalized Contract Cost
Total Deferred contract costs, net	$ 984	$ 917
Contract costs on implementations in progress
Capitalized Contract Cost
Total Deferred contract costs, net	206	245
Contract origination costs on completed implementations, net
Capitalized Contract Cost
Total Deferred contract costs, net	563	470
Contract fulfillment costs on completed implementations, net
Capitalized Contract Cost
Total Deferred contract costs, net	$ 215	$ 202

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123353750&loc=SL49131252-203054

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