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v3.20.2

Fair Value Measurements - Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Assets |  |
Cash equivalents | $ 146,680 |
Commodity contracts, assets | 17,304 | $ 515
Commodity contracts, liabilities | (3,209) | (69)
Nuclear decommissioning trust | 1,069,837 | 1,010,775
Nuclear decommissioning trust, other | 531,697 | 521,245
Other special use funds | 268,292 | 245,095
Other special use funds, other | 1,444 | 474
Total assets | 1,502,113 | 1,256,385
Total assets, other | 529,932 | 521,650
Liabilities |  |
Gross derivative liability, other | 1,925 |
Gross derivative liability, other |  | 711
Amount reported on balance sheet | (13,358) | (72,132)
Equity securities |  |
Assets |  |
Nuclear decommissioning trust | 10,389 | 13,273
Nuclear decommissioning trust, other | (14,148) | 2,401
Other special use funds | 9,534 | 7,616
Other special use funds, other | 1,444 | 474
U.S. commingled equity funds |  |
Assets |  |
Nuclear decommissioning trust | 545,845 | 518,844
U.S. Treasury debt |  |
Assets |  |
Nuclear decommissioning trust | 153,213 | 160,607
Other special use funds | 245,156 | 232,848
Corporate debt |  |
Assets |  |
Nuclear decommissioning trust | 146,682 | 115,869
Mortgage-backed securities |  |
Assets |  |
Nuclear decommissioning trust | 101,456 | 118,795
Municipal bonds |  |
Assets |  |
Nuclear decommissioning trust | 99,192 | 73,040
Other special use funds | 13,602 | 4,631
Other fixed income |  |
Assets |  |
Nuclear decommissioning trust | 13,060 | 10,347
Level 1 |  |
Assets |  |
Cash equivalents | 146,680 |
Commodity contracts, assets | 0 | 0
Nuclear decommissioning trust | 177,750 | 171,479
Other special use funds | 253,246 | 239,990
Total assets | 577,676 | 411,469
Liabilities |  |
Gross derivative liability | 0 | 0
Level 1 | Equity securities |  |
Assets |  |
Nuclear decommissioning trust | 24,537 | 10,872
Other special use funds | 8,090 | 7,142
Level 1 | U.S. commingled equity funds |  |
Assets |  |
Nuclear decommissioning trust | 0 | 0
Level 1 | U.S. Treasury debt |  |
Assets |  |
Nuclear decommissioning trust | 153,213 | 160,607
Other special use funds | 245,156 | 232,848
Level 1 | Corporate debt |  |
Assets |  |
Nuclear decommissioning trust | 0 | 0
Level 1 | Mortgage-backed securities |  |
Assets |  |
Nuclear decommissioning trust | 0 | 0
Level 1 | Municipal bonds |  |
Assets |  |
Nuclear decommissioning trust | 0 | 0
Other special use funds | 0 | 0
Level 1 | Other fixed income |  |
Assets |  |
Nuclear decommissioning trust | 0 | 0
Level 2 |  |
Assets |  |
Cash equivalents | 0 |
Commodity contracts, assets | 20,206 | 551
Nuclear decommissioning trust | 360,390 | 318,051
Other special use funds | 13,602 | 4,631
Total assets | 394,198 | 323,233
Liabilities |  |
Gross derivative liability | (10,737) | (67,992)
Level 2 | Equity securities |  |
Assets |  |
Nuclear decommissioning trust | 0 | 0
Other special use funds | 0 | 0
Level 2 | U.S. commingled equity funds |  |
Assets |  |
Nuclear decommissioning trust | 0 | 0
Level 2 | U.S. Treasury debt |  |
Assets |  |
Nuclear decommissioning trust | 0 | 0
Other special use funds | 0 | 0
Level 2 | Corporate debt |  |
Assets |  |
Nuclear decommissioning trust | 146,682 | 115,869
Level 2 | Mortgage-backed securities |  |
Assets |  |
Nuclear decommissioning trust | 101,456 | 118,795
Level 2 | Municipal bonds |  |
Assets |  |
Nuclear decommissioning trust | 99,192 | 73,040
Other special use funds | 13,602 | 4,631
Level 2 | Other fixed income |  |
Assets |  |
Nuclear decommissioning trust | 13,060 | 10,347
Level 3 |  |
Assets |  |
Cash equivalents | 0 |
Commodity contracts, assets | 307 | 33
Nuclear decommissioning trust | 0 | 0
Other special use funds | 0 | 0
Total assets | 307 | 33
Liabilities |  |
Gross derivative liability | (4,546) | (3,429)
Level 3 | Equity securities |  |
Assets |  |
Nuclear decommissioning trust | 0 | 0
Other special use funds | 0 | 0
Level 3 | U.S. commingled equity funds |  |
Assets |  |
Nuclear decommissioning trust | 0 | 0
Level 3 | U.S. Treasury debt |  |
Assets |  |
Nuclear decommissioning trust | 0 | 0
Other special use funds | 0 | 0
Level 3 | Corporate debt |  |
Assets |  |
Nuclear decommissioning trust | 0 | 0
Level 3 | Mortgage-backed securities |  |
Assets |  |
Nuclear decommissioning trust | 0 | 0
Level 3 | Municipal bonds |  |
Assets |  |
Nuclear decommissioning trust | 0 | 0
Other special use funds | 0 | 0
Level 3 | Other fixed income |  |
Assets |  |
Nuclear decommissioning trust | 0 | 0
Fair Value Measured at Net Asset Value Per Share | U.S. commingled equity funds |  |
Assets |  |
Nuclear decommissioning trust | $ 545,845 | $ 518,844

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