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v3.21.1

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Statement of Other Comprehensive Income [Abstract] |  |
Net income (loss) | $ 510.3 | $ 452.6
Derivatives accounted for as cash flow hedges |  |
Net derivative loss, net of tax benefit of $—, and $1.3, respectively | 0.0 | (3.4)
Reclassification of realized net derivative loss to net income, net of tax | 1.0 | 0.1
Cash flow hedges, net | 1.0 | (3.3)
Defined benefit plans |  |
Amortization of pension and OPEB costs included in net periodic benefit cost, net of tax | 0.1 | 0.3
Other comprehensive income (loss), net of tax | 1.1 | (3.0)
Comprehensive income | 511.4 | 449.6
Preferred stock dividends of subsidiary | 0.3 | 0.3
Comprehensive loss attributed to noncontrolling interests | 0.1 | 0.2
Comprehensive income attributed to common shareholders | $ 511.2 | $ 449.5

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