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Subsequent Events - Additional Information (Narrative) (Details) - Subsequent Event [Member]	Oct. 29, 2021 $ / shares
Class A Stock
Subsequent Events [Line Items]
Quarterly dividend payable amount per share	$ 0.15
Class B Stock
Subsequent Events [Line Items]
Quarterly dividend payable amount per share	$ 0.15

X

- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

+ Details

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Balance Type:	na
Period Type:	duration

X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

X

- Details

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X

- Details

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Namespace Prefix:
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X

- Details

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