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

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

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- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Period Type:	duration

- Definition

The percentage points added to the reference rate to compute the variable rate on the interest rate derivative.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	instant

- Definition

Date the entity entered into the derivative contract, in CCYY-MM-DD format.

+ References

No definition available.

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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.

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Balance Type:	na
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- Definition

The number of derivative instruments of a particular group held by the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5579245-113959

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Period Type:	instant

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FAIR VALUE OF FINANCIAL INSTRUMENTS (Narrative) (Detail) $ in Millions	1 Months Ended		12 Months Ended
	Mar. 31, 2013 USD ($)	Jan. 31, 2012 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014
Derivative [Line Items]
Derivative, Number of Instruments Held				3
Derivative, Notional Amount			$ 400
Two Thousand Eleven Notes [Member]
Derivative [Line Items]
Derivative, Inception Date			Jan. 01, 2012
Two Thousand Thirteen Senior Notes [Member]
Derivative [Line Items]
Derivative, Inception Date			Mar. 01, 2013
Senior Notes Three Eighty Five [Member]
Derivative [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.85%
Derivative, Basis Spread on Variable Rate	1.77%
Debt Instrument, Description of Variable Rate Basis	LIBOR
Debt Instrument, Maturity Date			Feb. 26, 2025
Derivative, Notional Amount	$ 100
Senior Notes Four Zero Five [Member]
Derivative [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.05%
Derivative, Basis Spread on Variable Rate	1.73%
Debt Instrument, Description of Variable Rate Basis	LIBOR
Debt Instrument, Maturity Date			Feb. 26, 2028
Derivative, Notional Amount	$ 75
Senior Notes Four Twenty Four [Member]
Derivative [Line Items]
Debt Instrument, Face Amount		$ 200
Debt Instrument, Interest Rate, Stated Percentage		4.24%
Derivative, Basis Spread on Variable Rate		2.02%
Debt Instrument, Description of Variable Rate Basis		LIBOR
Debt Instrument, Maturity Date			Dec. 01, 2026	Dec. 01, 2026
Derivative, Notional Amount		$ 200
Senior Notes Three Eighty Four [Member]
Derivative [Line Items]
Debt Instrument, Face Amount		$ 100
Debt Instrument, Interest Rate, Stated Percentage		3.84%
Derivative, Basis Spread on Variable Rate		1.90%
Debt Instrument, Description of Variable Rate Basis		LIBOR
Debt Instrument, Maturity Date			Dec. 01, 2021	Dec. 01, 2021
Derivative, Notional Amount		$ 25