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Selected Balance Sheet Data | 9 Months Ended
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Sep. 30, 2021
Balance Sheet Related Disclosures [Abstract] |
Selected Balance Sheet Data |
(Millions of Dollars) |  | Sept. 30, 2021 |  | Dec. 31, 2020
Accounts receivable, net |  |  |  |
Accounts receivable |  | $ | 1,119 |  |  | $ | 995 |
Less allowance for bad debts |  | (97) |  |  | (79) |
Accounts receivable, net |  | $ | 1,022 |  |  | $ | 916 |
(Millions of Dollars) |  | Sept. 30, 2021 |  | Dec. 31, 2020
Inventories |  |  |  |
Materials and supplies |  | $ | 283 |  |  | $ | 275 |
Fuel |  | 155 |  |  | 176 |
Natural gas |  | 149 |  |  | 84 |
Total inventories |  | $ | 587 |  |  | $ | 535 |
(Millions of Dollars) |  | Sept. 30, 2021 |  | Dec. 31, 2020
Property, plant and equipment, net |  |  |  |
Electric plant |  | $ | 49,293 |  |  | $ | 47,104 |
Natural gas plant |  | 7,443 |  |  | 7,135 |
Common and other property |  | 2,519 |  |  | 2,503 |
Plant to be retired (a) |  | 603 |  |  | 677 |
Construction work in progress |  | 2,263 |  |  | 1,877 |
Total property, plant and equipment |  | 62,121 |  |  | 59,296 |
Less accumulated depreciation |  | (17,711) |  |  | (16,657) |
Nuclear fuel |  | 3,065 |  |  | 2,970 |
Less accumulated amortization |  | (2,745) |  |  | (2,659) |
Property, plant and equipment, net |  | $ | 44,730 |  |  | $ | 42,950 |
(a)Includes regulator-approved retirements of Comanche Units 1 and 2 and jointly owned Craig Unit 1 for PSCo and Sherco Units 1 and 2 for NSP-Minnesota. Also includes SPS’ expected retirement of Tolk and conversion of Harrington to natural gas, and PSCo’s planned retirement of jointly owned Craig Unit 2.

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- References No definition available. + Details
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- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -URI http://asc.fasb.org/topic&trid=2122208 + Details
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