SEGMENTS INFORMATION

12 Months Ended

Dec. 31, 2021

Segment Reporting [Abstract]

SEGMENT INFORMATION

SEGMENT INFORMATION

We use net income to measure segment profitability and to allocate resources to our businesses. At December 31, 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 WRPC.

All of our operations and assets are located within the United States. The following tables show summarized financial information related to our reportable segments for the years ended December 31, 2021, 2020, and 2019.

2021 (in millions)	Utility		Other		Wisconsin Public Service Corporation
External revenues	$	1,520.9	$	—	$	1,520.9
Other operation and maintenance	406.4		—		406.4
Depreciation and amortization	188.6		—		188.6
Other income, net	36.8		1.4		38.2
Interest expense	64.7		—		64.7
Income tax expense	30.9		0.3		31.2
Net income	230.0		1.1		231.1
Capital expenditures	389.7		—		389.7
Total assets	6,224.3		11.4		6,235.7

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