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Indebtedness - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Debt Instrument [Line Items] |  |  |
Loss on repurchase of debt | $ 0 | $ 138 | $ 0
Unsecured Senior Notes |  |  |
Debt Instrument [Line Items] |  |  |
Maximum percentage redeemable on secured debt | 40.00% |  |
Unsecured Senior Notes |  |  |
Debt Instrument [Line Items] |  |  |
Repayments of debt | $ 0 | 100 |
Amount of principal redeemed | $ 0 | 2,298 |
Loss on repurchase of debt |  | $ 138 |

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- Definition Maximum percentage redeemable of aggregate principal on unsecured debt with the net proceeds of certain equity offerings at a fixed redemption prices, plus accrued and unpaid interest and additional interest, if any, to the redemption dates, subject to compliance with certain conditions. + References No definition available. + Details
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- Definition The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585 + Details
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