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SIGNIFICANT ACCOUNTING POLICIES - ACCRUED AND OTHER LIABILITIES (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Intangible assets |  |  |
Impairment charges related to finite-lived intangible assets | $ 0.0 | $ 0.0 | $ 0.0
Impairment charges related to indefinite-lived intangible assets and goodwill for impairment | 0.0 | 0.0 | $ 0.0
Accrued and other liabilities |  |  |
Payroll and vacation | 28.5 | 25.7 |
Employee incentives and other | 14.7 | 19.5 |
Uninsured risks and related liabilities - short term | 12.6 | 9.9 |
Multi-employer withdrawal liability - short-term (see Note 12) | 10.8 | 10.8 |
Deferred revenues | 6.9 | 5.7 |
Interest on debt | 4.9 | 5.1 |
Pension and post-retirement liabilities - short term (see Note 11) | 3.1 | 3.0 |
Other short-term liabilities | 4.5 | 2.2 |
Total | 86.0 | 81.9 |
Other long-term liabilities |  |  |
Pension and post-retirement liabilities (see Note 11) | 73.4 | 79.4 |
Multi-employer withdrawal liability (see Note 12) | 54.8 | 56.6 |
Uninsured risks and related liabilities | 26.6 | 27.3 |
Other long-term liabilities | 2.6 | 14.0 |
Total | $ 157.4 | $ 177.3 |
Customer Relationships. | Maximum |  |  |
Intangible assets |  |  |
Expected useful lives | 21 years |  |

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