Ratio of interest to adjusted EBITDA. Interest divided by adjusted EBITDA

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Debt Instrument, Annual Amortization Rate, Percentage

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Debt Instrument, Covenant Compliance, Maturity Date Extension, Other Indebtedness For Borrowed Money Threshold

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- Definition

Debt Instrument, Covenant Compliance, Secured Leverage Ratio

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Debt Instrument, Maturity Date Extension, Period Threshold

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Debt Instrument, Quarterly Amortization Rate, Percentage

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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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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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest.

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The cash outflow for cost incurred in the modification of term of existing debt agreement in order for the entity to achieve some advantage.

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Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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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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FINANCING ARRANGEMENTS - Senior Secured Credit Facilities 2017 Activity (Details)										1 Months Ended		12 Months Ended
	Jun. 01, 2018 USD ($)	Apr. 20, 2018 USD ($)	Nov. 21, 2017 USD ($)	Nov. 10, 2017 USD ($)	Oct. 05, 2017 USD ($)	Jul. 03, 2017 USD ($)	Mar. 28, 2017 USD ($)	Mar. 21, 2017 USD ($)	Mar. 03, 2017 USD ($)	Apr. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Nov. 27, 2018 USD ($)	Mar. 20, 2017	Jan. 01, 2016 USD ($)
Debt Instrument [Line Items]
Repayments of long-term debt												$ 10,101,000,000	$ 14,203,000,000	$ 2,436,000,000
Loss on extinguishment of debt												$ 119,000,000	$ 122,000,000	$ 0
Debt issuance cost	$ 74,000,000														$ 25,000,000
Payments of debt restructuring costs	4,000,000
Revolving credit facility
Debt Instrument [Line Items]
Maximum borrowing capacity							$ 1,190,000,000										$ 1,500,000,000
Repayments of lines of credit		$ 250,000,000						$ 350,000,000
Minimum interest coverage maintenance covenant												2.00
Secured leverage ratio												4.00
Loss on extinguishment of debt							$ 1,000,000
Maturity date extension, period threshold							91 days
Maturity date extension, other indebtedness for borrowed money threshold							$ 750,000,000
Senior Credit Facilities
Debt Instrument [Line Items]
Repayments of long-term debt									$ 1,086,000,000
Series F Tranche B Term Loan Facility
Debt Instrument [Line Items]
Repayments of long-term debt	3,315,000,000		$ 750,000,000	$ 181,000,000	$ 923,000,000	$ 811,000,000				$ 220,000,000
Maximum borrowing capacity								$ 3,060,000,000
Quarterly amortization rate, percentage								1.25%								0.25%
Annual amortization rate, percentage								5.00%								1.00%
Repayments of lines of credit			750,000,000
Loss on extinguishment of debt	$ 48,000,000							$ 27,000,000
Debt issuance cost								38,000,000
Payments of debt restructuring costs								3,000,000
Senior Unsecured Notes
Debt Instrument [Line Items]
Aggregate principal amount								$ 1,100,000,000
Stated interest rate								6.75%
Loss on extinguishment of debt											$ 37,000,000
Revolving Credit Facility Due April 2018 \| Revolving credit facility \| March 31, 2017 To March 31, 2019
Debt Instrument [Line Items]
Secured leverage ratio								3.00
Revolving Credit Facility Due April 2018 \| Revolving credit facility \| April 1, 2019 And Thereafter
Debt Instrument [Line Items]
Minimum interest coverage maintenance covenant								1.75
Secured leverage ratio								2.75
Revolving Credit Facility Due April 2020 \| Revolving credit facility
Debt Instrument [Line Items]
Debt prepayment penalty			$ 38,000,000
Revolving Credit Facility Due April 2020 \| Revolving credit facility \| Base Rate
Debt Instrument [Line Items]
Margins			2.50%
Revolving Credit Facility Due April 2020 \| Revolving credit facility \| LIBOR
Debt Instrument [Line Items]
Margins			3.50%
Revolving Credit Facility Due April 2020 \| Revolving credit facility \| March 31, 2017 To March 31, 2019
Debt Instrument [Line Items]
Secured leverage ratio								3.00
Revolving Credit Facility Due April 2020 \| Revolving credit facility \| April 1, 2019 And Thereafter
Debt Instrument [Line Items]
Minimum interest coverage maintenance covenant								1.75
Secured leverage ratio								2.75
Revolving Credit Facility Due April 2020 \| Letter of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 300,000,000