Pension Benefits (Narrative) (Details)	12 Months Ended
Jun. 30, 2021
Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Minimum length of investment horizon (in years)	10 years

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration