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Dividends (Narrative) (Details) - $ / shares |  |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | ---
Jan. 13, 2022 | Oct. 14, 2021 | Mar. 25, 2023 | Mar. 26, 2022 | Mar. 25, 2023 | Mar. 26, 2022
Class A Common Stock [Member] |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |
Cash dividends per share of common stock |  |  | $ 0.165 | $ 0.165 | $ 0.33 | $ 0.33
Class B Common Stock [Member] |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |
Cash dividends per share of common stock |  |  | $ 0.150 | $ 0.150 | $ 0.30 | $ 0.30
Dividend 1 [Member] |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |
Dividend payment date |  | Oct. 13, 2022 |  |  |  |
Dividend record date |  |  |  |  | Oct. 06, 2022 |
Dividend 1 [Member] | Class A Common Stock [Member] |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |
Cash dividends per share of common stock |  | $ 0.165 |  |  |  |
Dividend 1 [Member] | Class B Common Stock [Member] |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |
Cash dividends per share of common stock |  | $ 0.15 |  |  |  |
Dividend 2 [Member] |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |
Dividend payment date |  |  |  |  | Jan. 12, 2023 |
Dividend record date |  |  |  |  | Jan. 06, 2023 |
Dividend 2 [Member] | Class A Common Stock [Member] |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |
Cash dividends per share of common stock | $ 0.165 |  |  |  |  |
Dividend 2 [Member] | Class B Common Stock [Member] |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |
Cash dividends per share of common stock | $ 0.15 |  |  |  |  |

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- Definition Date the declared dividend will be paid, in YYYY-MM-DD format. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4304-108586 + Details
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