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Preferred Stock (Details) $ / shares in Units, $ in Millions | 1 Months Ended |  |
--- | --- | --- | ---
Oct. 31, 2021 USD ($) | Aug. 31, 2021 USD ($) | May 31, 2021 shares | Sep. 30, 2021 $ / shares shares | Dec. 31, 2020 shares
Class of Stock [Line Items] |  |  |  |  |
Preferred stock dividends accumulated | $ |  | $ 9 |  |  |
Preferred stock, liquidation preference per share (in dollars per share) | $ / shares |  |  |  | $ 1,000 |
Preferred stock, convertible, conversion rate (in shares) |  |  |  | 44.9585 |
Preferred stock, shares authorized (in shares) | shares |  |  | 200,000 | 20,000,000 | 20,000,000
Subsequent Event |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Preferred stock dividends declared amount | $ | $ 10 |  |  |  |
Convertible Preferred Stock |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Preferred stock, dividend rate |  |  | 6.50% |  |
Convertible Preferred Stock | Private Placement |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Number of shares of Series A, cumulative convertible preferred stock | shares |  |  | 600,000 |  |

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- Definition The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(d)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21475-112644 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21484-112644 + Details
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