Summary of Significant Accounting Policies Materials, Supplies, and Inventories (Details) $ in Millions |
Dec. 31, 2020
USD ($)
$ / MMBTU
|
Dec. 31, 2019
USD ($)
$ / MMBTU
|
---|---|---|
Inventory | ||
Natural gas in storage | $ 224.9 | $ 227.7 |
Materials and supplies | 218.1 | 234.2 |
Fossil fuel | 85.6 | 87.9 |
Total | $ 528.6 | $ 549.8 |
Percentage of LIFO inventory | 22.00% | 19.00% |
PGL and NSG | ||
Inventory | ||
Excess of replacement or current costs over stated LIFO value | $ 31.5 | $ 9.8 |
Natural gas price benchmark | $ / MMBTU | 2.31 | 1.95 |
X | ||||||||||
- Definition Carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies relating to a source of usable power held for future sale or future use in manufacturing or production process. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Carrying amount as of the balance sheet date of natural gas in storage, which is a mixture of gases (liquefied or otherwise), used for fuel and manufacturing purposes, which is ready for sale. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of fossil fuel included in inventory classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The excess of replacement or current cost over the stated LIFO (last in first out) inventory value when the LIFO inventory method is utilized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Aggregated amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed. This amount is net of valuation reserves and adjustments. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The percentage of LIFO (last in first out) inventory to total inventory as of the balance sheet date if other than 100 percent. No definition available.
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- Definition Represents the Chicago city-gate natural gas price used in calculating replacement amounts. No definition available.
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- Details
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