SUPPLEMENTAL CASH FLOW INFORMATION (Tables)

9 Months Ended

Sep. 30, 2023

Additional Cash Flow Elements and Supplemental Cash Flow Information [Abstract]

Schedule of supplemental cash flow information

	Nine Months Ended September 30
(in millions)	2023		2022
Cash paid for interest, net of amount capitalized	$	432.9	$	311.4
Cash paid for income taxes, net	15.8		52.3
Significant non-cash investing and financing transactions:
Accounts payable related to construction costs	236.5		170.9
Accounts payable related to Thunderhead acquisition milestone payments	—		19.0
Increase in receivables related to insurance proceeds	6.2		—
Liabilities accrued for software licensing agreement	—		7.4

Reconciliation of cash and cash equivalents and restricted cash

The following table reconciles the cash, cash equivalents, and restricted cash amounts reported within the balance sheets to the total of these amounts shown on the statements of cash flows:

(in millions)	September 30, 2023		December 31, 2022
Cash and cash equivalents	$	45.9	$	28.9
Restricted cash included in other current assets	43.6		25.6
Restricted cash included in other long-term assets	51.9		127.7
Cash, cash equivalents, and restricted cash	$	141.4	$	182.2