Net increase or decrease in the carrying amount of the debt instrument for the period.

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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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No definition available.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Topic 470
-SubTopic 20
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The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
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-Subparagraph (b)
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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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LONG-TERM DEBT LONG-TERM DEBT - SECURED DEBT (Details) - USD ($) $ in Millions	2 Months Ended	12 Months Ended
	Feb. 15, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Debt instrument, increase (decrease)		$ (466)
Long-term Debt		2,103	$ 2,569
Long-term debt payments		807	397	$ 249
Repayments of debt		451
Proceeds from Issuance of Debt		$ 339	$ 0	$ 2,044
Subsequent Event [Member]
Debt Instrument [Line Items]
Repayments of debt	$ 262
Proceeds from Issuance of Debt	$ 254