GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

3 Months Ended

Mar. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of identifiable intangible assets other than goodwill

The identifiable intangible assets other than goodwill listed below are part of other current and long-term assets on the balance sheets. An insignificant amount was recorded as assets held for sale on the balance sheets.



	March 31, 2014							December 31, 2013
(Millions)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Amortized intangible assets
Customer-related ⁽¹⁾	$	26.8	$	(16.1	)	$	10.7	$	26.8	$	(15.7	)	$	11.1
Contractual service agreements ⁽²⁾	15.6		(2.4		)	13.2		15.6		(1.8		)	13.8
Renewable energy credits ⁽³⁾	9.6		—			9.6		8.4		—			8.4
Compressed natural gas fueling contract assets ⁽⁴⁾	5.6		(2.9		)	2.7		5.6		(2.7		)	2.9
Customer-owned equipment modifications ⁽⁵⁾	4.0		(0.9		)	3.1		4.0		(0.9		)	3.1
Natural gas and electric contract assets ⁽⁶⁾	3.9		(1.2		)	2.7		3.9		(0.5		)	3.4
Nonregulated easements ⁽⁷⁾	3.7		(1.2		)	2.5		3.7		(1.1		)	2.6
Patents/intellectual property⁽⁸⁾	3.4		(0.6		)	2.8		3.4		(0.5		)	2.9
Other	0.5		(0.3		)	0.2		0.5		(0.3		)	0.2
Total	$	73.1	$	(25.6	)	$	47.5	$	71.9	$	(23.5	)	$	48.4

Unamortized intangible assets
MGU trade name	$	5.2	$	—		$	5.2	$	5.2	$	—		$	5.2
Trillium trade name ⁽⁹⁾	3.5		—			3.5		3.5		—			3.5
Pinnacle trade name ⁽⁹⁾	1.5		—			1.5		1.5		—			1.5
Total intangible assets	$	83.3	$	(25.6	)	$	57.7	$	82.1	$	(23.5	)	$	58.6


⁽¹⁾	Represents customer relationship assets associated with PELLC’s former nonregulated retail natural gas and electric operations, ITF's compressed natural gas fueling operations, and IES's retail natural gas operations. The remaining weighted-average amortization period for customer-related intangible assets at March 31, 2014, was approximately 11 years.


⁽²⁾	Represents contractual service agreements related to maintenance on the combustion turbine generators at the Fox Energy Center. The remaining amortization period for these intangible assets at March 31, 2014, was approximately six years.


⁽³⁾	Used at IES to comply with state Renewable Portfolio Standards and to support customer commitments.


⁽⁴⁾	Represents the fair value of ITF contracts acquired in September 2011. The remaining amortization period at March 31, 2014, was approximately seven years.


⁽⁵⁾	Relates to modifications made by IES and ITF to customer-owned equipment. These intangible assets are amortized on a straight-line basis, with a remaining weighted-average amortization period at March 31, 2014, of approximately ten years.


⁽⁶⁾	Represents the fair value of certain natural gas and electric customer contracts acquired by IES during 2013 that were not considered to be derivative instruments. The remaining amortization period for these intangible assets at March 31, 2014, was approximately four years.


⁽⁷⁾	Relates to easements supporting a pipeline at IES. The easements are amortized on a straight-line basis, with a remaining amortization period at March 31, 2014, of approximately ten years.


⁽⁸⁾	Represents the fair value of patents/intellectual property at ITF related to a system for more efficiently compressing natural gas to allow for faster fueling. The remaining amortization period at March 31, 2014, was approximately eight years.


⁽⁹⁾	Trillium USA (Trillium) and Pinnacle CNG Systems (Pinnacle) are wholly-owned subsidiaries of ITF.

Schedule of intangible asset amortization expense for the next five years

The following table shows our estimated amortization expense for the next five years, including amounts recorded through March 31, 2014:



	For the Year Ending December 31
(Millions)	2014		2015		2016		2017		2018
Amortization to be recorded in nonregulated cost of sales	$	3.4	$	2.0	$	1.1	$	0.9	$	0.8
Amortization to be recorded in depreciation and amortization expense	4.3		4.2		4.0		3.9		3.8