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DEBT (Secured Receivables Credit Facility) (Narrative) (Details) - Secured Receivables Credit Facility [Member] - USD ($) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2018 | Oct. 27, 2018 | Oct. 26, 2018 | Dec. 31, 2017
Debt Instrument [Line Items] |  |  |  |
Credit facility capacity |  | $ 600,000,000 | $ 600,000,000 |
Commercial Rates for Highly-Rated Issuers or London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate in excess of LIBOR | 0.70% |  |  |
Commercial Rates for Highly-Rated Issuers or London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate in excess of LIBOR | 0.725% |  |  |
Letter of Credit [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Credit facility capacity | $ 100,000,000 |  |  |
Line of Credit [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Amount outstanding | 160,000,000 |  |  | $ 30,000,000
Loan commitment maturing October 2018 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Credit facility capacity | 250,000,000 |  |  |
Loan commitment maturing October 2019 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Credit facility capacity | $ 250,000,000 |  |  |

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + 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)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- 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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