Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2021

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

Schedule of supplemental cash flow information

	Year Ended December 31
(in millions)	2021		2020		2019
Cash paid for interest, net of amount capitalized	$	473.8	$	492.9	$	485.9
Cash paid (received) for income taxes, net	33.8		27.9		(24.9)
Significant non-cash investing and financing transactions:
Accounts payable related to construction costs	127.8		153.1		159.9
Increase in receivable related to insurance proceeds	41.7		2.7		—
Non-cash capital contributions from noncontrolling interest	1.5		—		21.0

Reconciliation of cash, cash equivalents, and restricted cash

The following table reconciles the cash, cash equivalents, and restricted cash amounts reported within the balance sheets at December 31 to the total of these amounts shown on the statements of cash flows:

(in millions)	2021		2020		2019
Cash and cash equivalents	$	16.3	$	24.8	$	37.5
Restricted cash included in other current assets	19.6		—		—
Restricted cash included in other long term assets	51.6		47.8		44.8
Cash, cash equivalents, and restricted cash	$	87.5	$	72.6	$	82.3