Stock-Based Compensation (Details)	6 Months Ended
Jun. 29, 2025 $ / shares shares	Jun. 30, 2024 $ / shares shares
2004 Stock Incentive Plan \| Deferred shares
Stock-based compensation
Granted (in shares)	46,361	44,459
Vesting period	3 years
2004 Stock Incentive Plan \| Performance stock units
Stock-based compensation
Granted (in shares)	34,932	39,085
Vesting period	3 years
Period of time used to calculate the compound annual growth rate	3 years
2004 Stock Incentive Plan \| Performance stock units \| Minimum
Stock-based compensation
Percent of target shares a recipient may earn	0
2004 Stock Incentive Plan \| Performance stock units \| Maximum
Stock-based compensation
Percent of target shares a recipient may earn	2
Management Stock Purchase Plan \| Maximum
Stock-based compensation
Percentage of annual incentive bonus that may be used to purchase RSU's	50.00%
Management Stock Purchase Plan \| Class A
Stock-based compensation
Purchase price as percentage of fair market value of common stock on grant date	80.00%
Management Stock Purchase Plan \| Restricted stock units (RSUs)
Stock-based compensation
Granted (in shares)	18,071	20,076
Minimum deferral period	3 years
Fair value assumptions
Expected life (years)	3 years	3 years
Expected stock price volatility (as a percent)	27.30%	28.90%
Expected dividend yield (as a percent)	0.90%	0.80%
Risk-free interest rate (as a percent)	4.00%	4.50%
Weighted average grant-date fair value (in dollars per share) \| $ / shares	$ 67.63	$ 68.94
Management Stock Purchase Plan \| Restricted stock units (RSUs) \| Minimum
Stock-based compensation
Vesting period	3 years

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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