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Stockholders' Equity and Accumulated Other Comprehensive Income (Loss) (Preferred Stock Issuances) (Details) - USD ($) $ / shares in Units, $ in Millions |  |  | 3 Months Ended | 120 Months Ended |
--- | --- | --- | --- | --- | ---
Aug. 15, 2029 | Sep. 15, 2025 | Mar. 31, 2023 | Sep. 15, 2024 | Dec. 31, 2022
Class of Stock [Line Items] |  |  |  |  |
Preferred Stock, Liquidation Preference, Value |  |  | $ 1,750 |  |
Preferred stock, shares issued |  |  | 1,403,500 |  | 1,403,500
Preferred stock, shares outstanding |  |  | 1,403,500 |  |
Preferred Stock, Carrying Amount |  |  | $ 1,659 |  | $ 1,659
Series B Preferred Stock [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage |  |  | 6.375% |  |
Preferred Stock, Liquidation Preference, Value |  |  | $ 500 |  |
Preferred stock, liquidation preference per share |  |  | $ 1,000,000,000 |  |
Preferred stock, shares issued |  |  | 500,000 |  |
Preferred stock, shares outstanding |  |  | 500,000 |  |
Preferred Stock, Carrying Amount |  |  | $ 433 |  | 433
Series C Preferred Stock [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage |  |  | 5.70% |  |
Preferred Stock, Liquidation Preference, Value |  |  | $ 500 |  |
Preferred stock, liquidation preference per share |  |  | $ 1,000,000,000 |  |
Preferred stock, shares issued |  |  | 500,000 |  |
Preferred stock, shares outstanding |  |  | 500,000 |  |
Preferred Stock, Carrying Amount |  |  | $ 490 |  | 490
Series D Preferred Stock |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage |  |  | 5.75% |  |
Preferred Stock, Liquidation Preference, Value |  |  | $ 350 |  |
Preferred stock, liquidation preference per share |  |  | $ 100,000,000,000 |  |
Preferred stock, shares issued |  |  | 3,500 |  |
Preferred stock, shares outstanding |  |  | 3,500 |  |
Preferred Stock, Carrying Amount |  |  | $ 346 |  | 346
Series E Preferred Stock |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage |  |  | 4.45% |  |
Preferred Stock, Liquidation Preference, Value |  |  | $ 400 |  |
Preferred stock, liquidation preference per share |  |  | $ 1,000,000,000 |  |
Preferred stock, shares issued |  |  | 400,000 |  |
Preferred stock, shares outstanding |  |  | 400,000 |  |
Preferred Stock, Carrying Amount |  |  | $ 390 |  | $ 390
Scenario, Forecast | Series B Preferred Stock Dividend Scenario 1 [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage |  |  |  | 6.375% |
Scenario, Forecast | Series C Preferred Stock Dividend Scenario 1 Member [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage | 5.70% |  |  |  |
Scenario, Forecast | Series C Preferred Stock Dividend Scenario 2 Member [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Preferred Stock, Dividend Rate, Basis Spread on Variable Rate, Percentage | 3.148% |  |  |  |
Scenario, Forecast | Series D Preferred Stock Dividend Scenario 1 Member [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage |  | 5.75% |  |  |
Plus 3-Month LIBOR [Member] | Scenario, Forecast | Series B Preferred Stock Dividend Scenario 2 [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Preferred Stock, Dividend Rate, Basis Spread on Variable Rate, Percentage |  |  |  | 3.536% |
Plus 5-year Treasury rate [Member] | Scenario, Forecast | Series D Preferred Stock Dividend Scenario 2 Member [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Preferred Stock, Dividend Rate, Basis Spread on Variable Rate, Percentage |  | 5.426% |  |  |
Depositary Shares [Member] | Series B Preferred Stock [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Preferred stock, liquidation preference per share |  |  | $ 25,000,000 |  |
Depositary Shares [Member] | Series C Preferred Stock [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Preferred stock, liquidation preference per share |  |  | 25,000,000 |  |
Depositary Shares [Member] | Series D Preferred Stock |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Preferred stock, liquidation preference per share |  |  | 1,000,000,000 |  |
Depositary Shares [Member] | Series E Preferred Stock |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Preferred stock, liquidation preference per share |  |  | $ 25,000,000 |  |

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- Definition The percentage rate used to calculate dividend payments on preferred stock. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644 + Details
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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 https://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 https://asc.fasb.org/extlink&oid=126973232&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 https://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 https://asc.fasb.org/extlink&oid=126973232&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 https://asc.fasb.org/extlink&oid=126973232&loc=d3e21484-112644 + Details
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- Definition Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt. + References Reference 1: 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 https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644 + Details
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