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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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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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Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.

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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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SHARE-BASED COMPENSATION, Share-based Compensation Plans (Details) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Dec. 31, 2021 USD ($) plan $ / shares shares	Sep. 30, 2021	Dec. 31, 2020 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock split ratio		1.5
Stock Incentive Plan 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share-based compensation plans \| plan	1
Stock Incentive Plan 2012 \| Employees and Outside Members of the Board of Directors \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs granted during period (in shares) \| shares	2.3		2.0
RSUs granted during period, weighted-average grant-date fair value (in usd per share) \| $ / shares	$ 96.99		$ 60.85
Stock Incentive Plan 2012 \| Employees and Member of the Board of Directors \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation expense for restricted equity awards	$ 63		$ 41
Total pre-tax compensation costs not yet recognized, net of forfeitures	$ 336
Compensation costs not yet recognized, period of recognition	3 years 2 months 12 days