Summary of Significant Accounting Policies (Tables)

12 Months Ended

May 31, 2016

Summary of Significant Accounting Policies

Schedule of goodwill by reportable segment

	Aviation Services			Expeditionary Services		Discontinued Operations			Total
Balance as of May 31, 2014	$	75.7		$	45.0	$	141.0		$	261.7
Reallocation of goodwill		—			4.7		(4.7	)		—
Businesses sold or assets held for sale		—			—		(136.3	)		(136.3	)
Foreign currency translation adjustments		(1.9	)		—		—			(1.9	)
Balance as of May 31, 2015		73.8			49.7		—			123.5
Acquisition		—			1.3		—			1.3
Deferred tax adjustments		(6.5	)		—		—			(6.5	)
Foreign currency translation adjustments		(1.0	)		—		—			(1.0	)
Balance as of May 31, 2016	$	66.3		$	51.0	$	—		$	117.3

Schedule of intangible assets, other than goodwill

	May 31, 2016
	Gross		Accumulated Amortization			Net
Amortizable intangible assets:
Customer relationships	$	22.7	$	(10.5	)	$	12.2
Developed technology		11.4		(4.6	)		6.8
Lease agreements		21.5		(9.9	)		11.6
FAA certificates		5.2		(1.5	)		3.7
Trademarks		0.2		—			0.2
		61.0		(26.5	)		34.5
Unamortized intangible assets:
Trademarks		1.3		—			1.3
	$	62.3	$	(26.5	)	$	35.8

	May 31, 2015
	Gross		Accumulated Amortization			Net
Amortizable intangible assets:
Customer relationships	$	23.4	$	(9.0	)	$	14.4
Developed technology		8.0		(3.5	)		4.5
Lease agreements		21.5		(8.7	)		12.8
FAA certificates		5.0		(1.3	)		3.7
		57.9		(22.5	)		35.4
Unamortized intangible assets:
Trademarks		1.3		—			1.3
	$	59.2	$	(22.5	)	$	36.7

Summary of inventories

	May 31,
	2016		2015
Raw materials and parts	$	44.0	$	43.1
Work-in-process		20.2		18.1
Aircraft and engine parts, components and finished goods		365.5		337.0
Aircraft held for sale and related support parts		15.7		57.8
	$	445.4	$	456.0

Schedule of supplemental information on cash flow

	For the Year Ended May 31,
	2016		2015		2014
Interest paid	$	4.7	$	42.7	$	33.8
Income taxes paid		35.7		105.6		17.3
Income tax refunds and interest received		1.3		12.1		7.5