XML 246 R56.htm IDEA: XBRL DOCUMENT v3.22.2

SHORT-TERM INVESTMENTS (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disclosure Of Short Term Investments Explanatory [Abstract]
Impairment charges	$ 10.6	$ 1.4
Bond investments	$ 1.8	$ 0.1

X

- Definition

It represent bond investments.

+ References

No definition available.

+ Details

Name:	svm_BondInvestments
Namespace Prefix:	svm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	svm_DisclosureOfShortTermInvestmentsExplanatoryAbstract
Namespace Prefix:	svm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

It represent impairment charges.

+ References

No definition available.

+ Details

Name:	svm_ImpairmentCharges
Namespace Prefix:	svm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration