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v3.19.3

Financial Instruments and Risk Management (Narrative) (Details) $ in Millions | 1 Months Ended | 6 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Oct. 30, 2019 barrels_per_day $ / bbl | Dec. 31, 2019 USD ($) | Sep. 30, 2020 bbl / d | Sep. 30, 2019 USD ($) bbl / d OffsettingPosition contract Acquisition $ / bbl | Sep. 30, 2018 barrels_per_day contract $ / bbl | Jun. 30, 2020 $ / bbl | Dec. 31, 2018 item
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |  |
Number of foreign currency derivatives | contract |  |  |  | 0 | 0 |  |
Amount of loss reclassified to interest expense |  |  |  | $ 2.2 |  |  |
Number of businesses acquired (in acquisitions) | Acquisition |  |  |  | 2 |  |  |
Number of offsetting positions (in positions) |  |  |  | 0 |  |  | 0
Scenario, Forecast |  |  |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |  |
Derivative loss |  | $ 0.7 |  |  |  |  |
Commodity derivative contracts |  |  |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |  |
Daily production commitment (barrels per day) |  |  |  | 35,000 | 21,000 |  |
Average Forward Price (in dollars per barrel) | $ / bbl |  |  |  | 60.51 | 54.88 |  |
Interest Rate Swap |  |  |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |  |
Loss deferred for fair value of interest rate derivative contracts, net of tax |  |  |  | $ 6.1 |  |  |
Income taxes on deferred loss on fair value of interest rate derivative contracts |  |  |  | $ 1.6 |  |  |
Notes Due 2022 |  |  |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |  |
Debt instrument term |  |  |  | 10 years |  |  |
Subsequent Event | Commodity derivative contracts |  |  |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |  |
Daily production commitment (barrels per day) | 45,000 |  | 35,000 |  |  |  |
Average Forward Price (in dollars per barrel) | $ / bbl | 56.42 |  |  |  |  | 57.59 |

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