Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2020

Supplemental Cash Flow Information [Abstract]

Schedule of supplemental cash flow information

	Year Ended December 31
(in millions)	2020		2019		2018
Cash paid for interest, net of amount capitalized	$	492.9	$	485.9	$	441.5
Cash paid (received) for income taxes, net	27.9		(24.9)		16.3
Significant non-cash investing and financing transactions:
Accounts payable related to construction costs	153.1		159.9		65.9
Non-cash capital contributions from noncontrolling interest	—		21.0		—
Receivable related to corporate-owned life insurance proceeds	—		—		7.7

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)	2020		2019		2018
Cash and cash equivalents	$	24.8	$	37.5	$	84.5
Restricted cash included in other current assets	—		—		2.5
Restricted cash included in other long term assets	47.8		44.8		59.1
Cash, cash equivalents, and restricted cash	$	72.6	$	82.3	$	146.1