Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of finite-lived intangible assets

Information regarding other intangible assets as of March 31, 2015 and December 31, 2014 follows:

	March 31, 2015							December 31, 2014
	Weighted Average Useful Life	Acquisition Cost		Accumulated Amortization		Net		Acquisition Cost		Accumulated Amortization		Net
		(In millions)
Non-contractual customer relationships	11.5 years	$	76.2	$	14.7	$	61.5	$	77.3	$	13.2	$	64.1
Indefinite-lived tradenames	*	14.0		—		14.0		14.0		—		14.0
Other	17.6 years	12.2		2.5		9.7		12.3		2.3		10.0
Total		$	102.4	$	17.2	$	85.2	$	103.6	$	15.5	$	88.1

* Not applicable, tradenames have an indefinite life.

Schedule of indefinite-lived intangible assets

Information regarding other intangible assets as of March 31, 2015 and December 31, 2014 follows:

	March 31, 2015							December 31, 2014
	Weighted Average Useful Life	Acquisition Cost		Accumulated Amortization		Net		Acquisition Cost		Accumulated Amortization		Net
		(In millions)
Non-contractual customer relationships	11.5 years	$	76.2	$	14.7	$	61.5	$	77.3	$	13.2	$	64.1
Indefinite-lived tradenames	*	14.0		—		14.0		14.0		—		14.0
Other	17.6 years	12.2		2.5		9.7		12.3		2.3		10.0
Total		$	102.4	$	17.2	$	85.2	$	103.6	$	15.5	$	88.1

* Not applicable, tradenames have an indefinite life.

Information regarding amortization expense

Information regarding amortization expense of other intangibles assets follows:

	Three Months Ended March 31,
	2015		2014
	(In millions)
Amortization expense	$	1.7	$	1.1