PROPERTY, PLANT AND EQUIPMENT (Tables)

12 Months Ended

Mar. 31, 2021

The estimated useful lives, residual values and depreciation methods are as follows:


	Method	Amortization rate/period
Buildings and improvements	Declining balance/Straight-line	2.5% to 10%/3 to 40 years
Simulators	Straight-line (10% residual)	Not exceeding 25 years
Machinery and equipment	Declining balance/Straight-line	20% to 35%/2 to 15 years
Aircraft	Straight-line (residual not exceeding 15%)	Not exceeding 25 years
Aircraft engines	Based on utilization	Not exceeding 3500 hours



					Machinery					Assets
	Buildings					and				under
(amounts in millions)		and land	Simulators		equipment			Aircraft	construction			Total
Net book value as at April 1, 2019	$	241.7	$	1,450.3	$	51.5	$	54.8	$	145.0	$	1,943.3
Additions		31.0		27.3		13.9		11.3		207.1		290.6


Additions – business combinations (Note 4)		0.1		—		0.1		0.6		—		0.8
Disposals		(0.1)		(0.5)		—		(0.1)		—		(0.7)
Depreciation		(17.7)		(105.0)		(17.9)		(5.0)		—		(145.6)
Impairment		—		(1.8)		—		—		—		(1.8)
Transfers and others		2.2		155.0		2.8		4.6		(151.6)		13.0
Foreign currency exchange differences		5.6		44.0		1.0		3.1		0.7		54.4


Net book value as at March 31, 2020	$	262.8	$	1,569.3	$	51.4	$	69.3	$	201.2	$	2,154.0
Additions		16.2		13.4		13.4		19.1		45.5		107.6
Additions – business combinations (Note 4)		0.3		7.9		0.3		—		—		8.5

Disposals		—		(1.9)		(0.1)		(0.4)		(1.6)		(4.0)
Depreciation		(19.8)		(113.3)		(15.9)		(5.8)		—		(154.8)
Impairment		—		(76.7)		—		—		—		(76.7)
Transfers and others		36.1		145.3		1.4		0.6		(97.3)		86.1
Foreign currency exchange differences		(13.5)		(120.9)		(2.2)		(6.7)		(8.0)		(151.3)
Net book value as at March 31, 2021	$	282.1	$	1,423.1	$	48.3	$	76.1	$	139.8	$	1,969.4



					Machinery					Assets
	Buildings					and				under
(amounts in millions)		and land	Simulators		equipment			Aircraft	construction			Total
Cost	$	490.0	$	2,191.1	$	203.1	$	82.2	$	201.2	$	3,167.6
Accumulated depreciation and impairment		(227.2)		(621.8)		(151.7)		(12.9)		—		(1,013.6)


Net book value as at March 31, 2020	$	262.8	$	1,569.3	$	51.4	$	69.3	$	201.2	$	2,154.0
Cost	$	513.8	$	2,140.6	$	192.9	$	91.9	$	139.8	$	3,079.0
Accumulated depreciation and impairment		(231.7)		(717.5)		(144.6)		(15.8)		—		(1,109.6)
Net book value as at March 31, 2021	$	282.1	$	1,423.1	$	48.3	$	76.1	$	139.8	$	1,969.4