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Held for Sale - Narrative (Details) $ in Millions, € in Billions | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Sep. 30, 2021 USD ($) | Jul. 05, 2021 USD ($) | Jul. 05, 2021 EUR (€) | Jun. 30, 2021 USD ($) | Mar. 31, 2021 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Assets held for sale |  |  |  | $ 7 | $ 12
Liabilities held for sale |  |  |  | 5 | 9
Held-for-sale |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Assets held for sale |  |  |  | 7 | 12
Liabilities held for sale |  |  |  | $ 5 | $ 9
European Businesses (Disposal Group) | Held-for-sale | Expected | Minimum |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Charge to remeasure to lower of carrying amount or fair value less costs to sell | $ 500 |  |  |  |
European Businesses (Disposal Group) | Held-for-sale | Expected | Maximum |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Charge to remeasure to lower of carrying amount or fair value less costs to sell | $ 700 |  |  |  |
European Businesses (Disposal Group) | Held-for-sale | Subsequent Event |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Purchase price |  | $ 1,500 | € 1.2 |  |

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