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v3.24.3

U.S. and Europe Retrospective Responsibility Plans - Schedule of Changes in Preferred Stock and Right to Recover Covered Losses (Details) $ / shares in Units, shares in Millions, $ in Millions | 12 Months Ended |
--- | --- | ---
Sep. 30, 2024 USD ($) $ / shares shares | Sep. 30, 2023 USD ($) $ / shares shares | Sep. 30, 2022 USD ($) shares | Sep. 30, 2021 shares
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Balance as of beginning of period | $ 38,733 |  | $ 35,581 |  | $ 37,589 |  |
VE territory covered losses incurred | (139) |  | (136) |  | (43) |  |
Recovery through conversion rate adjustment | (6) |  | 1 |  | 0 |  |
Balance as of end of period | 39,137 |  | 38,733 |  | 35,581 |  |
As-converted Value of Preferred Stock | 2,234 |  | 4,311 |  |  |  |
Book Value of Preferred Stock | 1,031 |  | 1,698 |  |  |  |
Book Value of Preferred Stock, Total | 491 |  | 1,242 |  |  |  |
Less: right to recover for covered losses | (104) |  | (140) |  |  |  |
As-converted value of Preferred Stock, Total recovery for covered losses available | 2,130 |  | 4,171 |  |  |  |
Book value of Preferred of Stock, Total recovery for covered losses available | $ 387 |  | $ 1,102 |  |  |  |
Preferred stock, shares outstanding (in shares) | shares | 5 |  | 5 |  |  |  |
Share price (in dollars per share) | $ / shares | $ 274.95 |  | $ 230.01 |  |  |  |
Preferred Stock |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Balance as of beginning of period | $ 1,698 | [1],[2] | $ 2,324 | [1],[3] | 3,080 | [3] |
Recovery through conversion rate adjustment | (181) |  | (30) |  | (141) |  |
Balance as of end of period | $ 1,031 | [2] | $ 1,698 | [1],[2] | $ 2,324 | [1],[3] |
Preferred stock, shares outstanding (in shares) | shares | 5 |  | 5 |  | 5 |  | 5
Right to Recover for Covered Losses |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Balance as of beginning of period | $ (140) |  | $ (35) |  | $ (133) |  |
VE territory covered losses incurred | (139) |  | (136) |  | (43) |  |
Recovery through conversion rate adjustment | 175 |  | 31 |  | 141 |  |
Eighth Anniversary Release | 0 |  |  |  |  |  |
Balance as of end of period | (104) |  | (140) |  | (35) |  |
Series B Preferred Stock |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Recovery through conversion rate adjustment | 161 |  | 19 |  | 135 |  |
As-converted Value of Preferred Stock | 684 |  | 1,676 |  |  |  |
Book Value of Preferred Stock | $ 104 |  | $ 441 |  |  |  |
Preferred stock, shares outstanding (in shares) | shares | 2 |  | 2 |  |  |  |
Preferred stock, conversion rate | 1.0030 |  | 2.9370 |  |  |  |
Series B Preferred Stock | Preferred Stock |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Balance as of beginning of period | $ 441 |  | $ 460 |  |  |  |
VE territory covered losses incurred | 0 |  | 0 |  |  |  |
Recovery through conversion rate adjustment | (161) |  | (19) |  |  |  |
Eighth Anniversary Release | (176) |  |  |  |  |  |
Balance as of end of period | 104 |  | 441 |  | 460 |  |
Series C Preferred Stock |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Recovery through conversion rate adjustment | 20 |  | 11 |  | 6 |  |
As-converted Value of Preferred Stock | 1,550 |  | 2,635 |  |  |  |
Book Value of Preferred Stock | $ 387 |  | $ 801 |  |  |  |
Preferred stock, shares outstanding (in shares) | shares | 3 |  | 3 |  |  |  |
Preferred stock, conversion rate | 1.7860 |  | 3.6290 |  |  |  |
Series C Preferred Stock | Preferred Stock |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Balance as of beginning of period | $ 801 |  | $ 812 |  |  |  |
VE territory covered losses incurred | 0 |  | 0 |  |  |  |
Recovery through conversion rate adjustment | (20) |  | (11) |  |  |  |
Eighth Anniversary Release | (394) |  |  |  |  |  |
Balance as of end of period | $ 387 |  | $ 801 |  | $ 812 |  |
[1] | As of September 30, 2023 and 2022, the book value of series A preferred stock was $456 million and $1.0 billion, respectively. Refer to Note 5—U.S. and Europe Retrospective Responsibility Plans for the book value of series B and C preferred stock.
[2] | As of September 30, 2024 and 2023, the book value of series A convertible participating preferred stock (series A preferred stock) was $540 million and $456 million, respectively. Refer to Note 5—U.S. and Europe Retrospective Responsibility Plans for the book value of series B convertible participating preferred stock (series B preferred stock) and series C convertible participating preferred stock (series C preferred stock).
[3] | As of September 30, 2022 and 2021, the book value of series A preferred stock was $1.0 billion and $486 million, respectively. Refer to Note 5—U.S. and Europe Retrospective Responsibility Plans for the book value of series B and C preferred stock.

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