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Equity (Preferred Stock - Authorized, Issued and Outstanding) (Details) - $ / shares | Dec. 31, 2023 | Nov. 01, 2023 | Dec. 31, 2022 | Nov. 01, 2022
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Preferred stock authorized (shares) | 20,000,000 |  | 20,000,000 |
Preferred stock outstanding (shares) | 63,000 |  | 58,000 |
Common stock held in treasury at cost (shares) | 145,087,054 |  | 142,298,689 |
Series B Preferred Stock |  |  |  |
Preferred stock, liquidation preference per share (in USD per share) | $ 40 |  |  |
Preferred stock outstanding (shares) | 1,000 |  | 1,000 |
Series O Preferred Stock |  |  |  |
Preferred stock, liquidation preference per share (in USD per share) | $ 100,000 |  |  |
Preferred stock outstanding (shares) |  |  | 10,000 |
Treasury stock, preferred (shares) |  | 10,000 |  |
Series R Preferred Stock |  |  |  |
Preferred stock, liquidation preference per share (in USD per share) | $ 100,000 |  |  |
Preferred stock outstanding (shares) | 5,000 |  | 5,000 |
Series S Preferred Stock |  |  |  |
Preferred stock, liquidation preference per share (in USD per share) | $ 100,000 |  |  |
Preferred stock outstanding (shares) | 5,000 |  | 5,000 |
Series T Preferred Stock |  |  |  |
Preferred stock, liquidation preference per share (in USD per share) | $ 100,000 |  |  |
Preferred stock outstanding (shares) | 15,000 |  | 15,000 |
Series U Preferred Stock |  |  |  |
Preferred stock, liquidation preference per share (in USD per share) | $ 100,000 |  |  |
Preferred stock outstanding (shares) | 10,000 |  | 10,000 |
Series V Preferred Stock |  |  |  |
Preferred stock, liquidation preference per share (in USD per share) | $ 100,000 |  |  |
Preferred stock outstanding (shares) | 12,000 |  | 12,000 |
Series W Preferred Stock |  |  |  |
Preferred stock, liquidation preference per share (in USD per share) | $ 100,000 |  |  |
Preferred stock outstanding (shares) | 15,000 |  |  |
Depositary Shares |  |  |  |
Common stock held in treasury at cost (shares) |  | 1,000,000 |  | 60,000,000

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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 -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(d)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481112/505-10-50-3 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481112/505-10-50-4 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481112/505-10-50-13 + Details
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- Definition The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(16)(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479617/946-210-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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