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LEASES: (Details) | 9 Months Ended
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Sep. 30, 2019 USD ($)
Leases |
The weighted average remaining lease term | 9 years
The weighted average discount rate | 3.65%
Total lease expense | $ 87,000,000.0
Short term lease costs | 300,000
Maturities of lease liabilities |
2019 | 28,900,000
2020 | 115,400,000
2021 | 115,300,000
2022 | 112,200,000
2023 | 111,100,000
After 2023 | 929,200,000
Total lease payments | 1,412,100,000
Less: interest on lease liabilities | (350,300,000)
Lease liabilities | 1,061,800,000
Cost of sales (exclusive of depreciation, amortization and depletion) |
Leases |
Total lease expense | 86,800,000
Selling, general and administrative |
Leases |
Total lease expense | 100,000
Exploration |
Leases |
Total lease expense | $ 100,000
Minimum |
Leases |
Remaining lease terms | 2 years
Maximum |
Leases |
Underlying asset value | $ 10,000
Total nominal contract value | $ 100,000
Remaining lease terms | 13 years

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- Definition Amount of lessee's undiscounted obligation for lease payments for operating lease, due after fifth fiscal year following latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980 + Details
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- Definition Amount of lessee's undiscounted obligation for lease payments for operating lease, due in fourth fiscal year following latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980 + Details
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