Segment Information (Tables)

12 Months Ended

Dec. 31, 2015

Segment Reporting [Abstract]

Schedule of information concerning our reportable segments

The following tables show summarized financial information concerning our reportable segments for the years ended December 31, 2015, 2014, and 2013.

2015 (in millions)	Electric Utility		Natural Gas Utility		Steam Utility		Wisconsin Electric Power Company Consolidated
Operating revenues *	$	3,413.4	$	399.7	$	41.0	$	3,854.1
Other operation and maintenance	1,309.1		59.2		16.6		1,384.9
Depreciation and amortization	270.4		29.1		4.5		304.0
Operating income	582.7		60.6		5.6		648.9
Equity in earnings of transmission affiliate	47.8		—		—		47.8
Capital expenditures	444.6		71.7		2.9		519.2

2014 (in millions)	Electric Utility		Natural Gas Utility		Steam Utility		Wisconsin Electric Power Company Consolidated
Operating revenues *	$	3,401.1	$	614.2	$	44.1	$	4,059.4
Other operation and maintenance	1,268.9		70.0		17.5		1,356.4
Depreciation and amortization	244.1		30.5		3.7		278.3
Operating income	565.6		77.2		7.6		650.4
Equity in earnings of transmission affiliate	57.9		—		—		57.9
Capital expenditures	489.3		69.3		3.2		561.8

2013 (in millions)	Electric Utility		Natural Gas Utility		Steam Utility		Wisconsin Electric Power Company Consolidated
Operating revenues *	$	3,308.7	$	451.9	$	39.6	$	3,800.2
Other operation and maintenance	1,323.8		75.0		18.5		1,417.3
Depreciation and amortization	201.5		25.5		3.6		230.6
Operating income	533.2		69.8		2.9		605.9
Equity in earnings of transmission affiliate	60.2		—		—		60.2
Capital expenditures	467.8		60.0		11.1		538.9

* We account for all intersegment revenues at rates established by the PSCW. Intersegment revenues were not material.