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LEASES: (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2019 USD ($)
Leases |
The weighted average remaining lease term | 9 years
The weighted average discount rate | 3.66%
Total lease expense | $ 114.8
Short term lease costs | 0.4
Maturities of lease liabilities |
2020 | 116.1
2021 | 116.0
2022 | 112.9
2023 | 111.6
2024 | 103.6
After 2024 | 826.3
Total lease payments | 1,386.5
Less: interest on lease liabilities | (340.1)
Lease liabilities | 1,046.4
Cost of sales (exclusive of depreciation, amortization and depletion) |
Leases |
Total lease expense | 114.4
Selling, general and administrative |
Leases |
Total lease expense | 0.2
Exploration |
Leases |
Total lease expense | $ 0.2
Minimum |
Leases |
Remaining lease terms | 2 years
Maximum |
Leases |
Remaining lease terms | 13 years

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