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Consolidated Balance Sheets - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Current assets: |  |
Cash and cash equivalents | $ 54 | $ 16
Accounts receivable, less allowance for expected credit losses | 412 | 402
Production fuel, at weighted average cost | 66 | 78
Gas stored underground, at weighted average cost | 46 | 49
Materials and supplies, at weighted average cost | 105 | 100
Regulatory assets | 81 | 87
Other | 123 | 144
Total current assets | 887 | 876
Property, plant and equipment, net | 14,336 | 13,527
Investments: |  |
ATC Holdings | 331 | 320
Other | 154 | 148
Total investments | 485 | 468
Other assets: |  |
Regulatory assets | 1,929 | 1,758
Deferred charges and other | 73 | 72
Total other assets | 2,002 | 1,830
Total assets | 17,710 | 16,701
Current liabilities: |  |
Current maturities of long-term debt | 8 | 657
Commercial paper | 389 | 337
Accounts payable | 377 | 422
Accrued taxes | 67 | 70
Regulatory liabilities | 249 | 212
Other | 207 | 356
Total current liabilities | 1,297 | 2,054
Long-term debt, net (excluding current portion) | 6,769 | 5,533
Other liabilities: |  |
Deferred tax liabilities | 1,814 | 1,714
Regulatory liabilities | 1,057 | 1,212
Pension and other benefit obligations | 511 | 484
Other | 374 | 299
Total other liabilities | 3,756 | 3,709
Commitments and contingencies (Note 17) |  |
Common equity: |  |
Common stock | 2 | 2
Additional paid-in capital | 2,704 | 2,446
Retained earnings | 2,994 | 2,766
Accumulated other comprehensive income (loss) | (1) | 1
Shares in deferred compensation trust - 380,542 and 381,232 shares at a weighted average cost of $28.73 and $26.24 per share | (11) | (10)
Total common equity | 5,688 | 5,205
Cumulative preferred stock of Interstate Power and Light Company | 200 | 200
Total equity | 5,888 | 5,405
Total liabilities and equity | 17,710 | 16,701
IPL [Member] |  |
Current assets: |  |
Cash and cash equivalents | 50 | 9
Accounts receivable, less allowance for expected credit losses | 210 | 203
Income taxes refunds receivable | 26 | 11
Production fuel, at weighted average cost | 48 | 47
Gas stored underground, at weighted average cost | 20 | 22
Materials and supplies, at weighted average cost | 63 | 55
Regulatory assets | 52 | 44
Other | 27 | 18
Total current assets | 496 | 409
Property, plant and equipment, net | 7,889 | 7,481
Other assets: |  |
Regulatory assets | 1,431 | 1,356
Deferred charges and other | 33 | 31
Total other assets | 1,464 | 1,387
Total assets | 9,849 | 9,277
Current liabilities: |  |
Current maturities of long-term debt | 0 | 200
Commercial paper | 0 | 0
Accounts payable | 162 | 207
Accounts payable to associated companies | 45 | 39
Accrued taxes | 54 | 63
Regulatory liabilities | 103 | 116
Accrued interest | 34 | 37
Other | 49 | 168
Total current liabilities | 447 | 830
Long-term debt, net (excluding current portion) | 3,345 | 2,947
Other liabilities: |  |
Deferred tax liabilities | 1,035 | 1,008
Regulatory liabilities | 573 | 599
Pension and other benefit obligations | 186 | 168
Other | 299 | 253
Total other liabilities | 2,093 | 2,028
Commitments and contingencies (Note 17) |  |
Common equity: |  |
Common stock | 33 | 33
Additional paid-in capital | 2,752 | 2,348
Retained earnings | 979 | 891
Total common equity | 3,764 | 3,272
Cumulative preferred stock of Interstate Power and Light Company | 200 | 200
Total equity | 3,964 | 3,472
Total liabilities and equity | 9,849 | 9,277
WPL [Member] |  |
Current assets: |  |
Cash and cash equivalents | 3 | 4
Accounts receivable, less allowance for expected credit losses | 192 | 191
Production fuel, at weighted average cost | 18 | 31
Gas stored underground, at weighted average cost | 26 | 27
Materials and supplies, at weighted average cost | 40 | 43
Regulatory assets | 29 | 43
Prepaid gross receipts tax | 42 | 42
Other | 12 | 62
Total current assets | 362 | 443
Property, plant and equipment, net | 6,022 | 5,638
Other assets: |  |
Regulatory assets | 498 | 402
Deferred charges and other | 30 | 24
Total other assets | 528 | 426
Total assets | 6,912 | 6,507
Current liabilities: |  |
Current maturities of long-term debt | 0 | 150
Commercial paper | 257 | 168
Accounts payable | 154 | 160
Accounts payable to associated companies | 35 | 42
Regulatory liabilities | 146 | 96
Other | 82 | 74
Total current liabilities | 674 | 690
Long-term debt, net (excluding current portion) | 2,130 | 1,783
Other liabilities: |  |
Deferred tax liabilities | 702 | 626
Regulatory liabilities | 484 | 613
Finance lease obligations - Sheboygan Falls Energy Facility | 42 | 51
Pension and other benefit obligations | 222 | 211
Other | 180 | 169
Total other liabilities | 1,630 | 1,670
Commitments and contingencies (Note 17) |  |
Common equity: |  |
Common stock | 66 | 66
Additional paid-in capital | 1,459 | 1,434
Retained earnings | 953 | 864
Total common equity | 2,478 | 2,364
Total equity | 2,478 | 2,364
Total liabilities and equity | $ 6,912 | $ 6,507

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