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Supplemental Cash Flow Information - Supplemental Information (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Supplemental cash flow information |  |  |
Cash paid for interest, net of amount capitalized | $ 485.9 | $ 441.5 | $ 413.7
Cash paid (received) for income taxes, net | (24.9) | 16.3 | (5.2)
Accounts payable related to construction costs | 159.9 | 65.9 | 169.2
Capital contributions from noncontrolling interest | 21.0 | 0.0 | 0.0
Receivable related to corporate-owned life insurance proceeds | 0.0 | 7.7 | 0.0
Bostco |  |  |
Supplemental cash flow information |  |  |
Portion of Bostco real estate holdings sale financed with note receivable | $ 0.0 | $ 0.0 | $ 7.0

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