Goodwill and Intangible Assets, Net of Accumulated Amortization (Tables)

9 Months Ended

Feb. 28, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Components of intangible assets, at cost

The components of intangible assets, at cost, consisted of the following:



In millions	February 28, 2015		May 31, 2014
Client lists	$	244.4	$	240.9
Other intangible assets	3.2		2.6
Total intangible assets, gross	247.6		243.5
Less: Accumulated amortization	212.0		202.9
Intangible assets, net of accumulated amortization	$	35.6	$	40.6

Estimated future amortization expense relating to intangible assets

As of February 28, 2015, the estimated amortization expense relating to intangible asset balances for the full year fiscal 2015 and the following four fiscal years is as follows:



In millions Fiscal year ending May 31,	Estimated amortization expense
2015	$	14.4
2016	$	11.2
2017	$	8.1
2018	$	5.5
2019	$	3.5