Summary of Significant Accounting Policies (Tables)

12 Months Ended

May. 31, 2015

Summary of Significant Accounting Policies

Schedule of goodwill by reportable segment

	Aviation Services			Expeditionary Services		Discontinued Operations			Total
Balance as of May 31, 2013	$	73.7		$	45.0	$	136.9		$	255.6
Acquisition		—			—		0.3			0.3
Foreign currency translation adjustments		2.0			—		3.8			5.8
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

Schedule of intangible assets, other than goodwill

	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

	May 31, 2014
	Gross		Accumulated Amortization			Net
Amortizable intangible assets:
Customer relationships	$	124.0	$	(22.9	)	$	101.1
Developed technology		32.8		(4.8	)		28.0
Lease agreements		21.5		(7.5	)		14.0
FAA certificates		5.0		(1.0	)		4.0
		183.3		(36.2	)		147.1
Unamortized intangible assets:
Trademarks		18.3		—			18.3
	$	201.6	$	(36.2	)	$	165.4

Summary of inventories

	May 31,
	2015		2014
Raw materials and parts	$	43.1	$	114.1
Work-in-process		18.1		57.5
Aircraft and engine parts, components and finished goods		337.0		297.3
Aircraft held for sale and related support parts		57.8		26.4
	$	456.0	$	495.3

Summary of equipment on or available for long-term lease

	May 31,
	2015		2014
Aircraft engines and rotable parts	$	80.2	$	73.1
Aircraft		—		25.3
	$	80.2	$	98.4

Schedule of supplemental information on cash flow

	For the Year Ended May 31,
	2015		2014		2013
Interest paid	$	42.7	$	33.8	$	28.3
Income taxes paid		105.6		17.3		24.1
Income tax refunds and interest received		12.1		7.5		23.2