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

12 Months Ended

May 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Components of intangible assets, at cost

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

	May 31,
In millions	2014		2013
Client lists	$	240.9	$	231.0
Other intangible assets	2.6		2.4
Total intangible assets, gross	243.5		233.4
Less: Accumulated amortization	202.9		188.2
Intangible assets, net of accumulated amortization	$	40.6	$	45.2

Estimated future amortization expense relating to intangible assets

The estimated amortization expense for the next five fiscal years relating to intangible asset balances is as follows:

In millions Year ending May 31,	Estimated amortization expense
2015	$	13.4
2016	9.9
2017	7.3
2018	4.9
2019	2.9