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Contingencies (Shareholder Class Action and Shareholder Derivative Lawsuits) (Details) $ in Millions | 1 Months Ended | 3 Months Ended | 6 Months Ended | 7 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Jan. 31, 2022 USD ($) | Apr. 30, 2021 claim | Aug. 31, 2020 shareholder | Sep. 30, 2022 USD ($) | Jun. 30, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2019 lawsuit shareholder | Mar. 31, 2021 shareholder | Jan. 31, 2022 contract | Dec. 31, 2021 USD ($) | Aug. 31, 2021 shareholder
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss contingency, number of shareholders filing class action lawsuits | shareholder |  |  |  |  |  |  | 2 |  |  |  |
Litigation settlement |  |  |  |  |  | $ 90 |  |  |  |  |
Provision related to litigation recorded |  |  |  |  |  |  |  |  |  | $ 90 |
Payments for legal settlements | $ 90 |  |  |  |  |  |  |  |  |  |
Loss contingency, number of shareholders filing derivative lawsuits | shareholder |  |  | 2 |  |  |  |  | 3 |  |  | 6
Loss contingency, number of pending cases consolidated |  | 5 |  |  |  |  |  |  | 5 |  |
Loss Contingency, Number Of Lawsuits Subsequently Consolidated Into A Single Proceeding | lawsuit |  |  |  |  |  |  | 2 |  |  |  |
Federal And State Shareholder Derivative Lawsuits [Member] |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Provision related to litigation recorded |  |  |  | $ 20 | $ 7 |  |  |  |  |  |

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- Definition Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349 + Details
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- Definition The amount of cash paid for the settlement of litigation or for other legal issues during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3536-108585 + Details
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