Contingencies, Environmental and Legal Matters (Tables)

3 Months Ended

Mar. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Schedule of Change in Asset Retirement Obligation

Changes in the Company’s AROs are as follows:

	Three Months Ended March 31,
(amounts in millions)	2015			2014
AROs, beginning of period	$	18.5		$	4.8
Accretion expense	0.3			0.1
Foreign currency adjustments	(1.4		)	—
AROs, end of period	$	17.4		$	4.9