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Goodwill, Customer Relationships and Other Intangible Assets - Additional Information (Details) |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Oct. 31, 2023 USD ($) reporting_unit | Oct. 31, 2022 USD ($) reporting_unit | Dec. 31, 2024 USD ($) | Jun. 30, 2023 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2024 USD ($) segement | Dec. 31, 2024 USD ($) reporting_unit | Dec. 31, 2024 USD ($) segment | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Intangible assets, gross (including goodwill) |  |  | $ 15,400,000,000 |  | $ 15,400,000,000 | $ 15,400,000,000 | $ 15,400,000,000 | $ 15,400,000,000 | $ 15,400,000,000 | $ 15,800,000,000 |
Impairment of indefinite-lived intangible assets |  |  |  |  |  | 0 |  |  |  | 0 | $ 0
Number of reportable segments |  |  |  |  |  |  | 2 |  | 2 |  |
Number of reporting units | reporting_unit | 3 | 4 |  |  |  |  |  | 3 |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment | $ 1,900,000,000 |  | $ 0 | $ 8,800,000,000 |  | 0 |  |  |  | 10,693,000,000 | 3,271,000,000
Control premium (as a percent) | 2.00% | 59.00% |  |  |  |  |  |  |  |  |
Acquired finite-lived intangible assets, weighted average useful life (in years) |  |  |  |  | 5 years |  |  |  |  |  |
Amortization of intangible assets |  |  |  |  |  | $ 1,100,000,000 |  |  |  | $ 1,100,000,000 | $ 1,100,000,000
Customer Relationships |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Acquired finite-lived intangible assets, weighted average useful life (in years) |  |  |  |  | 6 years |  |  |  |  |  |
Capitalized Software |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Acquired finite-lived intangible assets, weighted average useful life (in years) |  |  |  |  | 4 years |  |  |  |  |  |
Disposal Group, Held-for-sale, Not Discontinued Operations | EMEA Business |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment |  | $ 43,000,000 |  |  |  |  |  |  |  |  |
NA Business |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment |  | 3,200,000,000 |  |  |  |  |  |  |  |  |
Mass Markets |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment |  | $ 0 |  |  |  |  |  |  |  |  |
Goodwill, impairment (as a percent) |  | 97.00% |  |  |  |  |  |  |  |  |
EMEA |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment |  | $ 0 |  |  |  |  |  |  |  |  |
Goodwill, impairment (as a percent) |  | 171.00% |  |  |  |  |  |  |  |  |
APAC |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment |  | $ 0 |  |  |  |  |  |  |  |  |
Goodwill, impairment (as a percent) |  | 101.00% |  |  |  |  |  |  |  |  |
Measurement Input, Revenue Multiple |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment, measurement input (as a percent) |  | 2.5 |  |  |  |  |  |  |  |  |
Measurement Input, Revenue Multiple | Minimum |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment, measurement input (as a percent) | 1.5 | 1.8 |  | 1.5 |  |  |  |  |  |  |
Measurement Input, Revenue Multiple | Maximum |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment, measurement input (as a percent) | 3.5 | 4.6 |  | 4.3 |  |  |  |  |  |  |
Measurement Input, EBITDA Multiple |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment, measurement input (as a percent) |  | 5.5 |  |  |  |  |  |  |  |  |
Measurement Input, EBITDA Multiple | Minimum |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment, measurement input (as a percent) | 4.8 | 4.7 |  | 4.6 |  |  |  |  |  |  |
Measurement Input, EBITDA Multiple | Maximum |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment, measurement input (as a percent) | 8.4 | 10.8 |  | 10.5 |  |  |  |  |  |  |

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