Debt Instrument, Interest Rate, Decrease in Stated Percentage

No definition available.

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- Definition

Debt Instrument, Prepayment Premium, Percentage

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Line of Credit Facility, Increase in Maximum Borrowing Capacity

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Long-term Debt, Purchase Price

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Long-term Debt, Purchase Price, Accrued Interest

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

+ Details

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Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
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Balance Type:	na
Period Type:	duration

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (a)
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-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

+ Details

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- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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+ Details

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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

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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-Paragraph 3
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-Name Accounting Standards Codification
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+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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.

+ 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 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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Period Type:	instant

- Definition

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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
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+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
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-Paragraph 1
-Subparagraph (SX 210.4-08.(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

The cash inflow from a borrowing supported by a written promise to pay an obligation.

+ References

+ Details

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- Details

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- Details

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- Details

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FINANCING ARRANGEMENTS (Narrative) (Details)				9 Months Ended
FINANCING ARRANGEMENTS (Narrative) (Details)	Aug. 02, 2018	Aug. 01, 2018 USD ($)	Jul. 19, 2018 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Apr. 17, 2018	Dec. 31, 2017 USD ($)
Debt Instrument [Line Items]
Borrowing from revolving credit facility				$ 50,000,000	$ 0
Available to borrow and outstanding letters of credit				194,400,000.0			$ 217,800,000
Outstanding letters of credit				130,000,000			134,100,000
Debt outstanding				1,623,691,000			1,629,537,000
Effective interest rate percentage	4.67%
Derivative liability				(300,000)
Term Loan Agreement
Debt Instrument [Line Items]
Increase in principal amount of initial term loans			$ 350,000,000
Prepayment premium percentage			1.00%
Debt outstanding				744,100,000
Senior unsecured notes, at 5.25%, due August 1, 2020 (2020 Notes)
Debt Instrument [Line Items]
Purchase price per $1,000			$ 330,900,000
Accrued interest			7,900,000
Term Loans with Interest Rate Swap Agreements
Debt Instrument [Line Items]
Debt outstanding				350,000,000
Secured debt \| Term Loan Agreement
Debt Instrument [Line Items]
Debt fair value				$ 746,000,000			400,500,000
Unsecured debt \| Senior unsecured notes, at 5.25%, due August 1, 2020 (2020 Notes)
Debt Instrument [Line Items]
Interest rate				5.25%
Debt fair value							404,600,000
Unsecured debt \| Senior unsecured notes, at 5.125%, due June 1, 2021 (2021 Notes)
Debt Instrument [Line Items]
Interest rate				5.125%
Debt fair value				$ 846,100,000			855,700,000
Senior Notes \| Senior unsecured notes, at 5.25%, due August 1, 2020 (2020 Notes)
Debt Instrument [Line Items]
Redemption of 2020 Notes		$ 78,000,000	$ 322,000,000
Revolving Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Revolving credit facility maximum borrowing capacity				400,000,000.0			$ 400,000,000.0
Borrowing from revolving credit facility				50,000,000
Eurodollar
Debt Instrument [Line Items]
Interest rate percentage	1.75%
Eurodollar \| Secured debt \| First Amendment
Debt Instrument [Line Items]
Decrease in interest rate						0.0025
Interest rate						1.75%
Base Rate \| Secured debt \| First Amendment
Debt Instrument [Line Items]
Decrease in interest rate						0.0025
Interest rate						0.75%
Interest Rate Swap
Debt Instrument [Line Items]
Notional amount of interest rate swap agreements				$ 350,000,000.0
Interest rate percentage	2.92%