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

12 Months Ended

May 31, 2013

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	2013		2012
Client lists	$	231.0	$	223.6
Other intangible assets	2.4		2.0
Total intangible assets, gross	233.4		225.6
Less: Accumulated amortization	188.2		169.8
Intangible assets, net of accumulated amortization	$	45.2	$	55.8

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
2014	$	14.9
2015	10.8
2016	7.7
2017	5.5
2018	3.5