SEGMENT INFORMATION (Tables)

9 Months Ended

Sep. 30, 2016

Segment Reporting [Abstract]

Schedule of information related to reportable segments

The following tables show summarized financial information related to our reportable segments for the three and nine months ended September 30, 2016 and 2015:

(in millions)	Utility		Other			Reconciling Eliminations			Wisconsin Public Service Corporation Consolidated
Three Months Ended September 30, 2016
External revenues	$	381.0	$	—		$	—		$	381.0
Intersegment revenues	—		0.1			(0.1		)	—
Other operation and maintenance	110.0		0.2			(0.1		)	110.1
Depreciation and amortization	30.7		—			—			30.7
Operating income (loss)	105.5		(0.2		)	—			105.3
Other income, net	6.3		2.6			—			8.9
Interest expense	11.7		—			—			11.7

(in millions)	Utility		Other		Reconciling Eliminations			Wisconsin Public Service Corporation Consolidated
Three Months Ended September 30, 2015
External revenues	$	390.8	$	—	$	—		$	390.8
Intersegment revenues	—		0.2		(0.2		)	—
Other operation and maintenance	120.8		0.1		(0.6		)	120.3
Depreciation and amortization	30.3		0.1		—			30.4
Operating income	88.4		0.1		—			88.5
Other income, net	4.3		2.4		—			6.7
Interest expense	13.1		0.1		—			13.2

(in millions)	Utility		Other		Reconciling Eliminations			Wisconsin Public Service Corporation Consolidated
Nine months ended September 30, 2016
External revenues	$	1,087.2	$	—	$	—		$	1,087.2
Intersegment revenues	—		0.4		(0.4		)	—
Other operation and maintenance	359.5		0.2		(0.4		)	359.3
Depreciation and amortization	91.7		—		—			91.7
Operating income	225.5		0.1		—			225.6
Other income, net	18.5		7.2		—			25.7
Interest expense	35.2		0.1		—			35.3

(in millions)	Utility		Other		Reconciling Eliminations			Wisconsin Public Service Corporation Consolidated
Nine months ended September 30, 2015
External revenues	$	1,146.1	$	—	$	—		$	1,146.1
Intersegment revenues	—		0.6		(0.6		)	—
Other operation and maintenance	356.4		0.2		(0.6		)	356.0
Depreciation and amortization	90.2		0.3		—			90.5
Operating income	202.6		—		—			202.6
Other income, net	11.1		8.7		—			19.8
Interest expense	40.1		0.2		—			40.3