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Revenue Recognition - Contract Costs (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Acquisition Costs |  |  |  |
Capitalized Contract Cost [Line Items] |  |  |  |
Beginning of period balance | $ 63 | $ 69 | $ 64 | $ 73
Costs incurred | 12 | 13 | 25 | 24
Amortization | (13) | (14) | (27) | (29)
End of period balance | 62 | 68 | 62 | 68
Fulfillment Costs |  |  |  |
Capitalized Contract Cost [Line Items] |  |  |  |
Beginning of period balance | 47 | 52 | 47 | 54
Costs incurred | 10 | 6 | 19 | 12
Amortization | (10) | (9) | (19) | (17)
End of period balance | $ 47 | $ 49 | $ 47 | $ 49

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- Definition Capitalized Contract Cost, Incurred + References No definition available. + Details
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- Definition Amount of amortization expense for 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 (b) -URI https://asc.fasb.org/extlink&oid=126905575&loc=SL49131252-203054 + Details
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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. + Details
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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 https://asc.fasb.org/extlink&oid=126905575&loc=SL49131252-203054 + Details
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- Details
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