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v3.20.4

REVENUES (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Contract with Customer, Liability [Abstract] |  |  |
Contract with customer, liability | $ 41.4 | $ 57.1 | $ 31.7
Revenue recognized included in beginning balance | (36.1) | (15.6) |
Net additions | 20.4 | 41.0 |
Contract with customer, liability, current | 23.7 | 22.2 |
Contract with customer, liability, noncurrent | 17.7 | $ 34.9 |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |  |
Revenue, Remaining Performance Obligation, Amount | $ 1,786.5 |  |
Revenue, Remaining Performance Obligation, Contract Term | 5 to 10 years |  |
Remaining Contract Terms [Member] |  |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |  |
Revenue, Remaining Performance Obligation, Contract Term | one month to 23 years |  |
2021 [Member] |  |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |  |
Revenue, Remaining Performance Obligation, Amount | $ 328.2 |  |
2022 [Member] |  |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |  |
Revenue, Remaining Performance Obligation, Amount | 263.0 |  |
2023 [Member] |  |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |  |
Revenue, Remaining Performance Obligation, Amount | 235.4 |  |
2024 {Member} |  |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |  |
Revenue, Remaining Performance Obligation, Amount | 197.9 |  |
Thereafter [Member] |  |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |  |
Revenue, Remaining Performance Obligation, Amount | $ 762.0 |  |

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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130531-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130549-203045 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130532-203044 + Details
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