Segment Information (Tables)

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Schedule of information concerning our reportable segments

The following tables show summarized financial information related to our reportable segments for the years ended December 31, 2016, 2015, and 2014.

2016 (in millions)	Utility		Other		Wisconsin Electric Power Company Consolidated
Operating revenues	$	3,792.8	$	—	$	3,792.8
Other operation and maintenance	1,430.2		—		1,430.2
Depreciation and amortization	325.4		—		325.4
Operating income	629.5		—		629.5
Equity in earnings of transmission affiliate	—		55.5		55.5
Interest expense	116.6		1.0		117.6
Capital expenditures	468.9		0.6		469.5
Total assets	12,945.1		426.4		13,371.5

2015 (in millions)	Utility		Other		Wisconsin Electric Power Company Consolidated
Operating revenues	$	3,854.1	$	—	$	3,854.1
Other operation and maintenance	1,384.9		—		1,384.9
Depreciation and amortization	304.0		—		304.0
Operating income	648.9		—		648.9
Equity in earnings of transmission affiliate	—		47.8		47.8
Interest expense	117.7		1.3		119.0
Capital expenditures	518.8		0.4		519.2
Total assets	12,727.6		412.0		13,139.6

2014 (in millions)	Utility		Other		Wisconsin Electric Power Company Consolidated
Operating revenues	$	4,059.4	$	—	$	4,059.4
Other operation and maintenance	1,356.4		—		1,356.4
Depreciation and amortization	278.3		—		278.3
Operating income	650.4		—		650.4
Equity in earnings of transmission affiliate	—		57.9		57.9
Interest expense	114.9		1.6		116.5
Capital expenditures	561.8		—		561.8
Total assets	12,195.9		401.3		12,597.2