COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Millions	1 Months Ended
Sep. 30, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Agreement to outsource billing and collection function	10 years
Litigation reserves	$ 3	$ 9
Self-insurance reserves	119	$ 124
Secured Receivables Credit Facility [Member]
Debt Instrument [Line Items]
Letters of credit outstanding, amount	68
Letter of Credit [Member] \| Secured Receivables Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility capacity	100
Letter of Credit [Member] \| Senior Unsecured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility capacity	$ 150

Agreement to Outsource Billing and Collection Function

No definition available.

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Balance Type:	na
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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 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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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- Definition

Aggregate carrying amount of the estimated litigation liability for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.25)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of the accrued liability on an undiscounted basis for malpractice claims (including general and professional liability) at the end of the accounting period.

+ References

+ Details

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Period Type:	instant

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- Details

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