Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2021

Supplemental Cash Flow Information [Abstract]

Schedule of Cash Flow, Supplemental Disclosures

The following table provides additional information regarding our Consolidated Statements of Cash Flows for the years ended December 31, 2021, 2020 and 2019:

Year Ended December 31, (in millions)	2021		2020		2019
Supplemental Disclosures of Cash Flow Information
Non-cash transactions:
Capital expenditures included in current liabilities	$	245.7	$	170.4	$	223.6
Assets acquired under a finance lease	22.4		59.3		26.4
Assets acquired under an operating lease	6.0		10.9		13.4
Reclassification of other property to regulatory assets(1)	607.6		—		—
Assets recorded for asset retirement obligations(2)	12.0		91.5		54.6
Obligation to developer at formation of joint venture(3)	277.5		69.7		—
Purchase contract liability, net of fees and payments(4)	129.4		—		—
Schedule of interest and income taxes paid:
Cash paid for interest on long-term debt, net of interest capitalized amounts	$	322.4	$	349.0	$	349.7
Cash paid for interest on finance leases	9.4		11.1		11.3
Cash paid for income taxes, net of refunds(5)	5.4		(1.0)		10.8

(1)See Note 9, "Regulatory Matters," for additional information.

(2)See Note 8, "Asset Retirement Obligations," for additional information.

(3)Represents investing non-cash activity. See Note 4, "Variable Interest Entities," for additional information.

(4)Refer to Note 13, "Equity," for additional information.

(5)Amount of refunds in 2020 was greater than the amount of tax payments due to overpayments in 2019.