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v3.25.4

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 | 3 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2025 USD ($) $ / shares shares | Dec. 31, 2024 USD ($) shares | Sep. 30, 2025 USD ($) $ / shares shares | Sep. 30, 2024 shares
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Balance as of beginning of period | $ 37,909 | [1] | $ 39,137 |  |  |
VE territory covered losses | (3) |  | (27) |  |  |
Recovery through conversion rate adjustments | (1) |  | 0 |  |  |
Balance as of end of period | 38,777 |  | 38,296 |  |  |
As-converted Value of Preferred Stock | 1,312 |  |  |  | $ 1,389 |
Book value of preferred stock | 551 |  |  |  | 745 |
Book Value of Preferred Stock, Total | 123 |  |  |  | 232 |
Less: right to recover for covered losses | (19) |  |  |  | (124) |
As-converted Value of Preferred Stock, Total recovery for covered losses available | 1,293 |  |  |  | 1,265 |
Book Value of Preferred of Stock, Total recovery for covered losses available | $ 104 |  |  |  | $ 108 |
Preferred stock, shares outstanding (in shares) | shares | 5 |  |  |  | 5 |
Share price (in dollars per share) | $ / shares | $ 350.71 |  |  |  | $ 341.38 |
Preferred Stock |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Balance as of beginning of period | $ 745 | [1] | 1,031 | [2] |  |
Recovery through conversion rate adjustments | (109) |  | (8) |  |  |
Balance as of end of period | $ 551 | [1] | $ 904 | [2] |  |
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 | $ (124) | [1] | $ (104) |  |  |
VE territory covered losses | (3) |  | (27) |  |  |
Recovery through conversion rate adjustments | 108 |  | 8 |  |  |
Balance as of end of period | (19) |  | (123) |  |  |
Series B preferred stock |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Recovery through conversion rate adjustments | 60 |  | 5 |  |  |
As-converted Value of Preferred Stock | 518 |  |  |  | $ 566 |
Book value of preferred stock | $ 7 |  |  |  | $ 67 |
Preferred stock, shares outstanding (in shares) | shares | 2 |  |  |  | 2 |
Preferred stock, conversion rate (in percent) | 0.5960 |  |  |  | 0.6690 |
Series B preferred stock | Preferred Stock |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Balance as of beginning of period | $ 67 |  | 104 |  |  |
VE territory covered losses | 0 |  | 0 |  |  |
Recovery through conversion rate adjustments | (60) |  | (5) |  |  |
Balance as of end of period | 7 |  | 99 |  |  |
Series C preferred stock |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Recovery through conversion rate adjustments | 49 |  | 3 |  |  |
As-converted Value of Preferred Stock | 794 |  |  |  | $ 823 |
Book value of preferred stock | $ 116 |  |  |  | $ 165 |
Preferred stock, shares outstanding (in shares) | shares | 3 |  |  |  | 3 |
Preferred stock, conversion rate (in percent) | 0.7170 |  |  |  | 0.7640 |
Series C preferred stock | Preferred Stock |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Balance as of beginning of period | $ 165 |  | 387 |  |  |
VE territory covered losses | 0 |  | 0 |  |  |
Recovery through conversion rate adjustments | (49) |  | (3) |  |  |
Balance as of end of period | $ 116 |  | $ 384 |  |  |
[1] | As of December 31, 2025 and September 30, 2025, the book value of series A convertible participating preferred stock (series A preferred stock) was $428 million and $513 million, respectively. See Note 4—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).
[2] | As of December 31, 2024 and September 30, 2024, the book value of series A preferred stock was $421 million and $540 million, respectively. See Note 4—U.S. and Europe Retrospective Responsibility Plans for the book value of series B and series C preferred stock.

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