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

12 Months Ended

May 31, 2016

Goodwill and Intangible Assets, Net of Accumulated Amortization [Abstract]

Components of Intangible Assets, at Cost

	May 31,
In millions	2016		2015
Client lists	$	289.2	$	244.6
Other intangible assets		5.4		3.2
Total intangible assets, gross		294.6		247.8
Less: Accumulated amortization		225.1		215.4
Intangible assets, net of accumulated amortization	$	69.5	$	32.4

Estimated Amortization Expense

In millions	Estimated amortization
Year ending May 31,	expense
2017	$	17.7
2018		14.1
2019		11.1
2020		8.5
2021		6.5