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SUPPLEMENTARY CASH FLOWS INFORMATION (Tables)
 12 Months Ended
Mar. 31, 2019
Cash Flow Statement [Abstract]  
Analysis of Non-Cash Working Capital
Changes in non-cash working capital are as follows:
 
 
2019

 
2018

 
 
 
 
Restated

Cash provided by (used in) non-cash working capital:
 
 

 
 

Accounts receivable
$
(1.3
)
$
18.1

Contract assets
 
(72.1
)
 
(84.6
)
Inventories
 
(22.2
)
 
(6.3
)
Prepayments
 
(5.7
)
 
19.7

Income taxes recoverable
 
(4.9
)
 
(6.5
)
Accounts payable and accrued liabilities
 
157.0

 
(44.2
)
Provisions
 
(8.7
)
 
(21.0
)
Income taxes payable
 
11.4

 
11.1

Deferred revenue
 
(2.5
)
 
(1.7
)
Contract liabilities
 
(15.8
)
 
71.8

Changes in non-cash working capital
$
35.2

$
(43.6
)