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CASH AND INVESTMENTS - Additional Information (Detail) | 9 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2019 USD ($) | Dec. 31, 2018 USD ($) | Sep. 30, 2018 USD ($)
Gain (Loss) on Securities [Line Items] |  |  |
Other than temporary impairment losses | $ 0 |  |
Investments and Restricted Cash | 169,000,000 | $ 170,000,000 |
Fair value of unobservable assets measured on a recurring basis | 2,000,000 | 2,000,000 |
Transfer between level 1 and level 2 | 0 |  | $ 0
cash held in escrow [Member] |  |  |
Gain (Loss) on Securities [Line Items] |  |  |
Restricted Cash and Cash Equivalents, Noncurrent | 3,000,000 | 9,000,000 |
Self-insurance requirements [Member] |  |  |
Gain (Loss) on Securities [Line Items] |  |  |
Investments and Restricted Cash | 145,000,000 | 142,000,000 |
Variable life insurance policy |  |  |
Gain (Loss) on Securities [Line Items] |  |  |
Investments and Restricted Cash | $ 20,000,000 | $ 19,000,000 |
Discount Rate |  |  |
Gain (Loss) on Securities [Line Items] |  |  |
Investments, measurement input | 0.0733 | 0.0816 |

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- Definition The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 8A -URI http://asc.fasb.org/extlink&oid=109979856&loc=SL6284422-111562 + Details
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- Definition Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6812-107765 Reference 2: 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(17)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 954 -SubTopic 305 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=84242212&loc=d3e2352-115587 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=98513485&loc=SL98516268-108586 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3044-108585 + Details
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