FINANCING ARRANGEMENTS - Current Description Of Senior Secured Credit Facilities (Details)	12 Months Ended
Dec. 31, 2018 USD ($)
Revolving credit facility
Debt Instrument [Line Items]
Quarterly amortization payments	$ 1,857,000,000
Incremental credit facility borrowings	$ 1,000,000,000
Secured leverage ratio	4.00
Minimum interest coverage maintenance covenant	2.00
Revolving credit facility \| Senior Secured Notes
Debt Instrument [Line Items]
Secured leverage ratio	3.50
Revolving credit facility \| Senior Unsecured Notes
Debt Instrument [Line Items]
Secured leverage ratio	6.50
Senior Credit Facilities \| Eurodollar
Debt Instrument [Line Items]
Margins	1.00%
Senior Credit Facilities \| Eurodollar \| Minimum
Debt Instrument [Line Items]
Margins	1.00%
Senior Secured Credit Facilities
Debt Instrument [Line Items]
Percentage of net cash proceeds of insurance and condemnation proceeds for property or asset losses	100.00%
Percentage of cash proceeds from incurrence of debt	100.00%
Percentage of annual excess cash flow	50.00%
Percentage of cash proceeds from asset sales outside the ordinary course of business payable as mandatory prepayments	100.00%
Senior Secured Credit Facilities \| Federal Funds Effective Swap Rate
Debt Instrument [Line Items]
Margins	0.50%
June 2025 Term Loan B Facility Due June 2025
Debt Instrument [Line Items]
Stated interest rate	5.38%
Annual amortization rate, percentage	5.00%
June 2025 Term Loan B Facility Due June 2025 \| Base Rate or Prime Rate
Debt Instrument [Line Items]
Margins	2.00%
June 2025 Term Loan B Facility Due June 2025 \| Eurodollar
Debt Instrument [Line Items]
Margins	3.00%
November 2025 Term Loan B Facility Due November 2025
Debt Instrument [Line Items]
Stated interest rate	5.13%
Annual amortization rate, percentage	5.00%
November 2025 Term Loan B Facility Due November 2025 \| Base Rate or Prime Rate
Debt Instrument [Line Items]
Margins	1.75%
November 2025 Term Loan B Facility Due November 2025 \| Eurodollar
Debt Instrument [Line Items]
Margins	2.75%
Revolving Credit Facility Due June 2023 \| Revolving credit facility
Debt Instrument [Line Items]
Stated interest rate	5.38%
Revolving Credit Facility Due June 2023 \| Minimum \| Revolving credit facility
Debt Instrument [Line Items]
Commitment fee, unutilized commitments, percentage	0.25%
Revolving Credit Facility Due June 2023 \| Maximum \| Revolving credit facility
Debt Instrument [Line Items]
Commitment fee, unutilized commitments, percentage	0.50%
Revolving Credit Facility Due June 2023 \| Base Rate or Prime Rate \| Minimum \| Revolving credit facility
Debt Instrument [Line Items]
Margins	1.50%
Revolving Credit Facility Due June 2023 \| Base Rate or Prime Rate \| Maximum \| Revolving credit facility
Debt Instrument [Line Items]
Margins	2.00%
Revolving Credit Facility Due June 2023 \| Eurodollar \| Minimum
Debt Instrument [Line Items]
Margins	0.00%
Revolving Credit Facility Due June 2023 \| Eurodollar \| Minimum \| Revolving credit facility
Debt Instrument [Line Items]
Margins	2.50%
Revolving Credit Facility Due June 2023 \| Eurodollar \| Maximum \| Revolving credit facility
Debt Instrument [Line Items]
Margins	3.00%
Revolving Credit Facility Due June 2023 \| Canada Bankers Acceptance Rate
Debt Instrument [Line Items]
Margins	1.00%
Revolving Credit Facility Due June 2023 \| Canada Bankers Acceptance Rate \| Minimum
Debt Instrument [Line Items]
Margins	0.00%

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

No definition available.

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- Definition

Debt Instrument, Annual Amortization Rate, Percentage

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Covenant Compliance, Secured Leverage Ratio

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Periodic Payment, Quarterly Amortization

+ References

No definition available.

+ Details

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- Definition

Represents the percentage of annual excess cash flow with any excess amounts after the prepayment of the loans.

+ References

No definition available.

+ Details

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- Definition

Represents the percentage of net cash proceeds from asset sales outside ordinary course of business payable as mandatory prepayments.

+ References

No definition available.

+ Details

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- Definition

Represents the percentage of net cash proceeds of insurance and condemnation proceeds for property or asset (losses) which is payable as mandatory prepayment.

+ References

No definition available.

+ Details

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- Definition

Represents the percentage of net cash proceeds from the incurrence of debt payable as mandatory prepayments.

+ References

No definition available.

+ Details

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- Definition

Line Of Credit Facility, Threshold For Incremental Borrowings

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

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.

+ References

No definition available.

+ Details

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- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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