Stockholders' Equity - Stock Repurchase Programs, Treasury Shares, and Dividends on Common Stock (Details) - USD ($) $ / shares in Units, shares in Millions	1 Months Ended	3 Months Ended
Nov. 30, 2020	Oct. 31, 2020	Oct. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock repurchased (in shares)		0.0
Stock repurchase program, remaining authorized repurchase amount		$ 2,400,000,000
Common stock, dividends, per share, cash paid (in dollars per share)		$ 0.59
Dividends declared		$ 157,000,000	$ 141,000,000
Cash dividends declared per common share (in dollars per share)		$ 0.59	$ 0.53
Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash dividends declared per common share (in dollars per share)	$ 0.59

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

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

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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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No definition available.

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Amount of stock repurchase plan authorized.

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No definition available.

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Number of shares that have been repurchased during the period and are being held in treasury.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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