v3.25.3

Equity Items - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Millions

3 Months Ended

12 Months Ended

Sep. 30, 2025

Jun. 30, 2025

Sep. 30, 2024

Jun. 30, 2024

Mar. 31, 2024

Dec. 31, 2023

Sep. 30, 2023

Jun. 30, 2023

Mar. 31, 2023

Dec. 31, 2022

Sep. 30, 2022

Jun. 30, 2022

Mar. 31, 2022

Dec. 31, 2021

Sep. 30, 2025

Sep. 30, 2024

Sep. 30, 2023

Jun. 28, 2023

Accelerated Share Repurchases [Line Items]

Stock repurchased and retired during period value

^[1],[2]

$ 100

$ 383

$ 303

Common shares repurchased

1,541,320

4,285,194

3,082,928

Dividend per common share

$ 41.5

$ 40.5

$ 38.5

$ 33.5

$ 1.64

$ 1.58

$ 1.44

Common stock, dividends, per share, declared

$ 41.5

$ 40.5

$ 38.5

$ 33.5

$ 30

Common shares reserved (in shares)

16,400,000

2022 Stock Repurchase Program [Member]

Accelerated Share Repurchases [Line Items]

Stock repurchase program amount outstanding

$ 200

2023 Stock Repurchase Program [Member]

Accelerated Share Repurchases [Line Items]

Aggregate amount of common stock to be repurchased

$ 1,000

Stock Repurchase Program, Remaining Authorized Repurchase Amount

$ 520

[1]	Common shares repurchased were 1,541,320, 4,285,194 and 3,082,928 for 2025, 2024 and 2023, respectively.
[2]	Includes $1 million, $3 million and $3 million of accrued excise taxes on stock repurchases for 2025, 2024 and 2023, respectively.

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Stock repurchase program amount outstanding.

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- Definition

Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Aggregate number of common shares reserved for future issuance.

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Aggregate dividends declared during the period for each share of common stock outstanding.

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Amount remaining authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

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Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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