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Business Combinations (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2021 | Dec. 31, 2021 | Dec. 31, 2020
Business Acquisition [Line Items] |  |  |
Business Combination, Consideration Transferred |  | $ 81 |
Redeemable Noncontrolling Interest, Equity, Carrying Amount | $ 18 | 18 | $ 7
2018 | 36 | 36 |
2019 | 33 | 33 |
2020 | 31 | 31 |
2021 | 28 | 28 |
2022 | 25 | 25 |
Thereafter | $ 200 | 200 |
Business Combination Goodwill, Expected Tax Deductible Amount, Accumulated Amortization |  | $ 4 |
Distribution Relationships |  |  |
Business Acquisition [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 15 years |  |
Non-compete Agreements |  |  |
Business Acquisition [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 5 years |  |
Trade Names |  |  |
Business Acquisition [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 8 years |  |
Distribution Relationships |  |  |
Business Acquisition [Line Items] |  |  |
Finite-Lived Intangible Assets, Gross |  |  | 33
Non-compete Agreements |  |  |
Business Acquisition [Line Items] |  |  |
Finite-Lived Intangible Assets, Gross |  |  | 1
Trade Names |  |  |
Business Acquisition [Line Items] |  |  |
Finite-Lived Intangible Assets, Gross |  |  | 1
Xchange |  |  |
Business Acquisition [Line Items] |  |  |
Business Combination, Consideration Transferred | $ 81 |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents |  |  | 2
BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedrResstrictedCash |  |  | 4
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill |  |  | 36
Goodwill, Acquired During Period | $ 46 |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets |  |  | 8
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets |  |  | 96
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable |  |  | 8
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities |  |  | 8
Redeemable Noncontrolling Interest, Equity, Carrying Amount |  |  | 7
Business Acquisition, Goodwill, Expected Tax Deductible Amount |  |  | $ 65

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