Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2020

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, 2020, 2019 and 2018:


Year Ended December 31, (in millions)	2020		2019		2018
Supplemental Disclosures of Cash Flow Information
Non-cash transactions:
Capital expenditures included in current liabilities	$	170.4	$	223.6	$	152.0
Assets acquired under a finance lease	59.3		26.4		54.6
Assets acquired under an operating lease	10.9		13.4		—
Reclassification of other property to regulatory assets(1)	—		—		245.3
Assets recorded for asset retirement obligations(2)	91.5		54.6		78.1
Obligation to developer at formation of joint venture(3)	69.7		—		—
Schedule of interest and income taxes paid:
Cash paid for interest, net of interest capitalized amounts	$	349.0	$	349.7	$	354.2
Cash paid for income taxes, net of refunds(4)	(1.0)		10.8		3.3

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