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Preferred Stock Issuances (Details) - USD ($) $ / shares in Units, $ in Millions |  |  | 6 Months Ended | 120 Months Ended |
--- | --- | --- | --- | --- | ---
Aug. 15, 2029 | Sep. 15, 2025 | Jun. 30, 2022 | Sep. 15, 2024 | Dec. 31, 2021
Class of Stock [Line Items] |  |  |  |  |
Preferred Stock, Liquidation Preference, Value |  |  | $ 1,750 |  |
Preferred stock |  |  | $ 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 |  |
Preferred stock |  |  | $ 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 |  |
Preferred stock |  |  | $ 490 |  | 490
Series D Preferred Stock [Member] |  |  |  |  |
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 |  |
Preferred stock |  |  | $ 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 |  |
Preferred stock |  |  | $ 390 |  | $ 390
Forecast [Member] | Series B Preferred Stock Dividend Scenario 1 [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage |  |  |  | 6.375% |
Forecast [Member] | Series C Preferred Stock Dividend Scenario 1 [Member] [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage | 5.70% |  |  |  |
Plus 3-Month LIBOR [Member] | Forecast [Member] | 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 3-Month LIBOR [Member] | Forecast [Member] | 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% |  |  |  |
Plus 5-year Treasury rate [Member] | Forecast [Member] | Series D Preferred Stock Dividend Scenario 1 [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage |  | 5.75% |  |  |
Plus 5-year Treasury rate [Member] | Forecast [Member] | Series D Preferred Stock Dividend Scenario 2 [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 |  |
Depositary Shares [Member] | Series C Preferred Stock [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Preferred Stock, Liquidation Preference Per Share |  |  | 25 |  |
Depositary Shares [Member] | Series D Preferred Stock [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Preferred Stock, Liquidation Preference Per Share |  |  | 1,000 |  |
Depositary Shares [Member] | Series E Preferred Stock |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Preferred Stock, Liquidation Preference Per Share |  |  | $ 25 |  |

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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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