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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Statement of Comprehensive Income [Abstract]      
Net income $ 430.3 $ 602.5 $ 997.3
Other comprehensive (loss) income:      
Change in fair value of cash flow swaps (3.2) (22.6) 103.3
Unrealized (losses) gains on available-for-sale debt securities (2.5) 5.2 (4.0)
Income tax benefit (expense) associated with other comprehensive income items 1.4 4.0 (24.3)
Comprehensive income $ 426.1 $ 589.1 $ 1,072.2