Segment Information

3 Months Ended

Mar. 31, 2015

Segment Information [Abstract]

Segment Information [Text Block]

SEGMENT INFORMATION

Summarized financial information concerning our reportable segments for the three months ended March 31, 2015 and 2014 is shown in the following table:

	Reportable Segments
	Electric		Gas		Steam		Total
	(Millions of Dollars)
Three Months Ended
March 31, 2015
Operating Revenues (a)	$	868.9	$	197.9	$	17.8	$	1,084.6
Operating Income	$	158.8	$	38.7	$	7.2	$	204.7
March 31, 2014
Operating Revenues (a)	$	885.8	$	322.5	$	18.4	$	1,226.7
Operating Income	$	168.9	$	45.4	$	7.5	$	221.8

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