Business Acquisitions (Tables)

3 Months Ended

Mar. 31, 2022

Business Combination and Asset Acquisition [Abstract]

Summary of Fair Values of Assets Acquired and Liabilities Assumed

The preliminary estimated fair values of assets acquired and liabilities assumed as of August 27, 2021, and as updated through March 31, 2022, are as follows:

(Millions of dollars)	Acquisition Date		Measurement Period Adjustments		Revised Acquisition Date
Cash and cash equivalents	$	1.9	$	—	$	1.9
Accounts receivable	69.1		(8.6)		60.5
Contract assets	40.1		7.4		47.5
Income taxes receivable, net	0.7		—		0.7
Right of use assets under operating leases	1.5		—		1.5
Prepaid expenses	5.2		—		5.2
Property and equipment	118.1		1.2		119.3
Intangible assets	335.0		(31.5)		303.5
Goodwill	446.8		2.1		448.9
Total assets acquired	1,018.4		$	(29.4)	$	989.0
Trade and other payables	46.2		—		46.2
Finance lease obligations	27.5		1.2		28.7
Contract liabilities	12.7		—		12.7
Operating lease obligations	1.5		—		1.5
Other liabilities	5.3		(0.9)		4.4
Deferred tax liabilities	94.8		(23.4)		71.4
Total liabilities assumed and noncontrolling interest	188.0		(23.1)		164.9
Net assets acquired	$	830.4	$	(6.3)	$	824.1

The preliminary estimated fair values of assets acquired and liabilities assumed as of December 31, 2021, and as updated through March 31, 2022, are as follows:

(Millions of dollars)	Acquisition Date		Measurement Period Adjustments		Revised Acquisition Date
Gas plant, net	$	1,047.4	$	—	$	1,047.4
Other property and investments	51.3		—		51.3
Cash and cash equivalents	17.6		—		17.6
Accounts receivable, net of allowances	26.6		2.9		29.5
Prepaid and other current assets	27.4		—		27.4
Deferred charges and other assets	31.1		—		31.1
Goodwill	986.2		(8.7)		977.5
Deferred income taxes	15.4		(1.3)		14.1
Total assets acquired	2,203.0		(7.1)		2,195.9
Long-term debt	449.7		—		449.7
Accounts payable	7.0		—		7.0
Deferred purchased gas costs	5.7		—		5.7
Customer deposits	3.2		—		3.2
Accrued general taxes	0.4		—		0.4
Accrued interest	4.7		—		4.7
Other current liabilities	14.5		—		14.5
Accumulated removal costs	56.6		—		56.6
Other deferred credits	85.6		—		85.6
Total liabilities assumed	627.4		—		627.4
Net assets acquired	$	1,575.6	$	(7.1)	$	1,568.5