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Dividends (Narrative) (Details) - $ / shares |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Apr. 09, 2026 | Mar. 28, 2026 | Mar. 29, 2025 | Mar. 28, 2026 | Mar. 29, 2025
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
O2026 Q1 Dividends [Member] |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |
Dividend payment date |  |  |  | Oct. 16, 2025 |
Dividend record date |  |  |  | Oct. 09, 2025 |
O2026 Q1 Dividends [Member] | Class A Common Stock [Member] |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |
Cash dividends per share of common stock |  |  |  | $ 0.165 |
O2026 Q1 Dividends [Member] | Class B Common Stock [Member] |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |
Cash dividends per share of common stock |  |  |  | $ 0.15 |
O2026 Q2 Dividends [Member] |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |
Dividend payment date |  |  |  | Jan. 15, 2026 |
Dividend record date |  |  |  | Jan. 08, 2026 |
O2026 Q2 Dividends [Member] | Class A Common Stock [Member] |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |
Cash dividends per share of common stock |  |  |  | $ 0.165 |
O2026 Q2 Dividends [Member] | Class B Common Stock [Member] |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |
Cash dividends per share of common stock |  |  |  | $ 0.15 |
O2026 Q3 Dividends [Member] | Subsequent Event [Member] |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |
Dividend payment date | Apr. 16, 2026 |  |  |  |
Dividend record date | Apr. 09, 2026 |  |  |  |
O2026 Q3 Dividends [Member] | Class A Common Stock [Member] | Subsequent Event [Member] |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |
Cash dividends per share of common stock | $ 0.165 |  |  |  |
O2026 Q3 Dividends [Member] | Class B Common Stock [Member] | Subsequent Event [Member] |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |
Cash dividends per share of common stock | $ 0.15 |  |  |  |

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- Definition Aggregate dividends paid during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 + Details
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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 -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482913/230-10-50-3 + Details
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