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Revenue Recognition - Capitalized Contract Costs (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Acquisition Costs |  |
Capitalized Contract Cost [Roll Forward] |  |
Beginning of period balance | $ 202 | $ 222
Costs incurred | 36 | 43
Amortization | (41) | (52)
Change in contract costs held for sale | (5) | 2
End of period balance | 192 | 215
Acquisition Costs | Held-for-sale, Not Discontinued Operations | EMEA Business |  |
Capitalized Contract Cost [Roll Forward] |  |
Beginning of period balance | 6 |
End of period balance | 11 |
Acquisition Costs | Held-for-sale | Latin American Business and ILEC Business |  |
Capitalized Contract Cost [Roll Forward] |  |
Beginning of period balance |  | 34
End of period balance |  | 32
Fulfillment Costs |  |
Capitalized Contract Cost [Roll Forward] |  |
Beginning of period balance | 192 | 186
Costs incurred | 40 | 40
Amortization | (35) | (39)
Change in contract costs held for sale | (15) | 0
End of period balance | 182 | 187
Fulfillment Costs | Held-for-sale, Not Discontinued Operations | EMEA Business |  |
Capitalized Contract Cost [Roll Forward] |  |
Beginning of period balance | 0 |
End of period balance | $ 15 |
Fulfillment Costs | Held-for-sale | Latin American Business and ILEC Business |  |
Capitalized Contract Cost [Roll Forward] |  |
Beginning of period balance |  | 32
End of period balance |  | $ 32

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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 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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