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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-Topic 505
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-Name Accounting Standards Codification
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-Paragraph 4
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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).

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-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
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The per share amount of a dividend declared, but not paid, as of the financial reporting date.

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-Topic 230
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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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Stockholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026	Mar. 31, 2025	Apr. 30, 2026	Apr. 28, 2026	Apr. 30, 2025
Equity, Class of Treasury Stock [Line Items]
Share repurchase program							$ 30,000
Share repurchase programs authorized	$ 13,200		$ 13,200
Dividends paid	$ 1,286	$ 1,164	$ 2,600	$ 2,300
Subsequent Event
Equity, Class of Treasury Stock [Line Items]
Share repurchase program					$ 20,000
Quarterly cash dividend (in dollars per share)						$ 0.67