SHARE-BASED PAYMENTS - Stock Activity (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward]
Historical volatility (in years)	3 years
Restricted Stock Units (RSUs)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Nonvested, beginning of period (in shares)	832,734
Granted (in shares)	1,667,473
Released to participants (in shares)	(698,906)
Forfeited (in shares)	(76,736)
Nonvested, ending of period (in shares)	1,724,565	832,734
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward]
Nonvested, weighted average price, beginning of period (in dollars per share)	$ 58.30
Granted, weighted average price (in dollars per share)	66.50	$ 60.96	$ 46.84
Vested, weighted average price (in dollars per share)	68.47
Forfeitures, weighted average price (in dollars per share)	58.92
Nonvested, weighted average price, ending of period (in dollars per share)	$ 62.08	$ 58.30
Grant date fair value of units vested	$ 48	$ 14	$ 13
Fair value of units granted	$ 111	$ 20	$ 20
Restricted Stock Units (RSUs) \| Magellan Acquisition
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Granted (in shares)	1,346,845
Released to participants (in shares)	(488,929)
Performance-Unit Activity
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Nonvested, beginning of period (in shares)	1,045,706
Granted (in shares)	369,222
Released to participants (in shares)	(235,874)
Forfeited (in shares)	(84,114)
Nonvested, ending of period (in shares)	1,094,940	1,045,706
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward]
Nonvested, weighted average price, beginning of period (in dollars per share)	$ 74.15
Granted, weighted average price (in dollars per share)	87.46	$ 79.05	$ 62.03
Vested, weighted average price (in dollars per share)	88.96
Forfeitures, weighted average price (in dollars per share)	77.22
Nonvested, weighted average price, ending of period (in dollars per share)	$ 75.22	$ 74.15
Grant date fair value of units vested	$ 21	$ 20	$ 20
Fair value of units granted	$ 32	$ 32	$ 34
Volatility	63.30%	61.10%	60.30%
Dividend yield	5.75%	6.15%	8.13%
Risk-free interest rate	4.43%	1.78%	0.21%

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Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Granted in Period, Fair Value

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made 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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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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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)
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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
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-Paragraph 2
-Subparagraph (f)(2)(iii)
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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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