SEGMENTS INFORMATION (Tables)

12 Months Ended

Dec. 31, 2020

Segment Reporting [Abstract]

Schedule of information related to reportable segments

The following tables show summarized financial information related to our reportable segments for the years ended December 31, 2020, 2019, and 2018.

2020 (in millions)	Utility		Other		Wisconsin Public Service Corporation
External revenues	$	1,407.1	$	—	$	1,407.1
Other operation and maintenance	426.3		—		426.3
Depreciation and amortization	174.3		—		174.3
Other income, net	29.9		1.5		31.4
Interest expense	63.5		—		63.5
Income tax expense	54.2		0.3		54.5
Net income	220.4		1.2		221.6
Capital expenditures	530.7		—		530.7
Total assets	5,923.3		10.6		5,933.9

2019 (in millions)	Utility		Other		Wisconsin Public Service Corporation
External revenues	$	1,411.9	$	—	$	1,411.9
Other operation and maintenance	396.2		—		396.2
Depreciation and amortization	166.2		—		166.2
Other income, net	38.2		1.4		39.6
Interest expense	63.4		—		63.4
Income tax expense	58.7		0.4		59.1
Net income	183.7		1.0		184.7
Capital expenditures	517.8		—		517.8
Total assets	5,595.7		45.9		5,641.6

2018 (in millions)	Utility		Other		Wisconsin Public Service Corporation
External revenues	$	1,498.5	$	—	$	1,498.5
Other operation and maintenance	447.5		0.5		448.0
Depreciation and amortization	141.9		—		141.9
Other income, net	35.2		2.4		37.6
Interest expense	53.9		—		53.9
Income tax expense (benefit)	77.4		(0.1)		77.3
Net income	170.9		1.9		172.8
Capital expenditures and asset acquisitions	521.4		—		521.4
Total assets	5,151.5		66.2		5,217.7