LEASES - Supplemental Cash Flows Information (Details) $ in Millions	12 Months Ended
Dec. 31, 2019 USD ($)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash outflows for operating leases	$ 176
Operating cash outflows for finance leases	7
Financing cash outflows for finance leases	6
Lease assets obtained in exchange for lease obligations:
Operating leases	$ 89

Cash Flow, Lessee [Abstract]

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- Definition

Right-of-Use Asset Obtained in Exchange for Lease Liability [Abstract]

+ References

No definition available.

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- Definition

Amount of interest paid on finance lease liability.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
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- Definition

Amount of cash outflow for principal payment on finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
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- Definition

Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

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