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v3.21.2

INVESTMENT IN TRANSMISSION AFFILIATES - SUMMARIZED FINANCIAL DATA (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Summarized financial data |  |  |  |  |
Operating revenues | $ 1,746.5 | $ 1,651.0 | $ 6,114.1 | $ 5,308.3 |
Operating expenses | 1,356.5 | 1,280.8 | 4,726.0 | 3,972.7 |
Other expense, net | 50.5 | 56.2 | 133.6 | 183.1 |
Current assets | 2,408.9 |  | 2,408.9 |  | $ 2,083.0
Noncurrent assets | 35,992.0 |  | 35,992.0 |  | 34,945.1
Total assets | 38,400.9 |  | 38,400.9 |  | 37,028.1
Current liabilities | 3,692.6 |  | 3,692.6 |  | 4,148.1
Other noncurrent liabilities | 1,283.6 |  | 1,283.6 |  | 1,229.4
Total liabilities and members' equity | 38,400.9 |  | 38,400.9 |  | 37,028.1
ATC |  |  |  |  |
Summarized financial data |  |  |  |  |
Operating revenues | 186.8 | 187.8 | 561.4 | 577.7 |
Operating expenses | 91.3 | 93.0 | 278.8 | 285.7 |
Other expense, net | 28.6 | 28.1 | 85.2 | 82.0 |
Net income | 66.9 | $ 66.7 | 197.4 | $ 210.0 |
Current assets | 87.0 |  | 87.0 |  | 92.7
Noncurrent assets | 5,539.8 |  | 5,539.8 |  | 5,400.6
Total assets | 5,626.8 |  | 5,626.8 |  | 5,493.3
Current liabilities | 483.0 |  | 483.0 |  | 310.8
Long-term debt | 2,412.8 |  | 2,412.8 |  | 2,512.2
Other noncurrent liabilities | 398.9 |  | 398.9 |  | 378.2
Members' equity | 2,332.1 |  | 2,332.1 |  | 2,292.1
Total liabilities and members' equity | $ 5,626.8 |  | $ 5,626.8 |  | $ 5,493.3

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