SEGMENT INFORMATION

6 Months Ended

Jun. 30, 2021

Segment Reporting [Abstract]

SEGMENT INFORMATION

SEGMENT INFORMATION

We use net income to measure segment profitability and to allocate resources to our businesses. At June 30, 2021, we reported two segments, which are described below.

Our utility segment includes our electric and natural gas utility operations, which serve customers in northeastern and central Wisconsin. Our electric utility operations are engaged in the generation, distribution, and sale of electricity. Our natural gas utility operations are engaged in the purchase, distribution, and sale of natural gas to retail customers as well as the transportation of customer-owned natural gas.

Our other segment primarily consists of equity earnings from our investment in Wisconsin River Power Company.

The following tables show summarized financial information for the three and six months ended June 30, 2021 and 2020, related to our reportable segments:

(in millions)	Utility		Other		Wisconsin Public Service Corporation
Three Months Ended June 30, 2021
Operating revenues	$	341.2	$	—	$	341.2
Other operation and maintenance	96.4		—		96.4
Depreciation and amortization	46.6		—		46.6
Other income, net	9.9		0.5		10.4
Interest expense	16.3		—		16.3
Income tax expense	8.4		0.1		8.5
Net income	59.8		0.4		60.2

(in millions)	Utility		Other		Wisconsin Public Service Corporation
Three Months Ended June 30, 2020
Operating revenues	$	312.8	$	—	$	312.8
Other operation and maintenance	99.3		—		99.3
Depreciation and amortization	43.2		—		43.2
Other income, net	8.0		0.4		8.4
Interest expense	16.0		—		16.0
Income tax expense	12.0		0.1		12.1
Net income	47.4		0.3		47.7

(in millions)	Utility		Other		Wisconsin Public Service Corporation
Six Months Ended June 30, 2021
Operating revenues	$	746.5	$	—	$	746.5
Other operation and maintenance	191.8		—		191.8
Depreciation and amortization	92.6		—		92.6
Other income, net	18.1		0.9		19.0
Interest expense	32.5		—		32.5
Income tax expense	17.0		0.2		17.2
Net income	128.8		0.7		129.5

(in millions)	Utility		Other		Wisconsin Public Service Corporation
Six Months Ended June 30, 2020
Operating revenues	$	682.2	$	—	$	682.2
Other operation and maintenance	191.1		—		191.1
Depreciation and amortization	86.2		—		86.2
Other income, net	15.9		0.8		16.7
Interest expense	32.3		—		32.3
Income tax expense	28.6		0.2		28.8
Net income	115.3		0.6		115.9