The number of shares purchased by employees under the investment share purchase program.

No definition available.

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- Definition

Share based compensation arrangement by share based payment award, fair value assumptions, estimated forfeiture rate.

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Share based compensation arrangement by share based payment award fair value assumptions restricted stock units and investment shares.

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Share based compensation arrangement by share based payment award participants payment description.

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Employee tenure requirement to participate in plan.

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- Definition

Stock repurchase program, cumulative number of shares repurchased.

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Stock repurchase program cumulative number of shares repurchased value.

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- Definition

Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

+ References

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Number of shares authorized to be purchased under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Discount rate from fair value on purchase date that participants pay for shares.

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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 weighted average fair value at grant date for nonvested equity-based awards issued 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).

+ References

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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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- Definition

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.

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- Definition

Number of shares authorized for issuance under share-based payment arrangement.

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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- Definition

Gross number of share options (or share units) granted during the period.

+ References

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Number of options outstanding, including both vested and non-vested options.

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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- Definition

Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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Number of options vested.

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Weighted average grant-date fair value of options vested.

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Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.

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Amount remaining authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Common Stock and Share-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 28, 2024	Dec. 30, 2023	Dec. 31, 2022	Oct. 02, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options, contractual term	4 years 11 months 4 days
Other than options granted in period	88,266
Stock option outstanding	209,794	207,810
Weighted average fair value of stock awards	$ 290.71
Weighted average exercise price	$ 358.48	$ 361.53
Expected dividends	0.00%	0.00%	0.00%
Estimated forfeiture rate for equity awards that do not vest on January 1st	16.00%	20.00%	19.00%
Restricted stock units and investment shares	13.00%	12.00%
Total fair value of options vested in period	$ 6.5
Aggregate intrinsic value of stock options exercised in period	0.7	$ 6.6	$ 6.9
Unrecognized compensation costs	$ 54.1
Unrecognized compensation costs, weighted average period	2 years 1 month 6 days
Option vested, number of shares	32,823	27,640	32,476
Option vested, weighted average fair value	$ 381.95	$ 341.57	$ 292.27
Performance-Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option outstanding	6,348
Non-Employee Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted in period	4,430	2,941	3,810
Non-Employee Director \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options, contractual term	10 years
Employee Stock Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted in period	21,205	58,054	17,114
Employee Stock Compensation Plan \| Investment Share Program
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	5 years
Share based compensation arrangement by share based payment award participants payment description	Participants may pay for these shares either up front or through payroll deductions over an eleven-month period during the year of purchase.
Shares employees elected to purchase	12,007	10,594	10,845
Employee Stock Compensation Plan \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Employee Stock Compensation Plan \| Minimum \| Investment Share Program
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Requirement tenure of employee for investment share program, purchase shares at discount	1 year
Discount from current market value	0.00%
Employee Stock Compensation Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	5 years
Stock options, contractual term	10 years
Employee Stock Compensation Plan \| Maximum \| Investment Share Program
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Discount from current market value	40.00%
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other than options granted in period	74,262	53,884	32,744
Restricted Stock Units \| Non-Employee Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options, contractual term	1 year
Other than options granted in period	1,997	1,442
Stock issued during period, shares, restricted stock units			0
Performance Based Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other than options granted in period	34,954
Service-Based Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other than options granted in period	39,308
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option vested, number of shares	40,468
Common Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock repurchase program, authorized amount				$ 400.0
Number of shares authorized to be repurchased	1,600,000,000
Repurchase of shares	14.9
Number of total cumulative shares repurchased, value	$ 1,170.0
Stock repurchase program, remaining authorized pepurchase amount	$ 427.5
Stock repurchased during period	803,281
Repurchase of Class A Common Stock	$ 238.9
Common Class A \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized to be repurchased				1,200,000,000
Common Class A \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized to be repurchased				1,600,000,000
Common Class A \| Non-Employee Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for issuance	600,000
Shares available for grant	100,000
Common Class A \| Employee Stock Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for issuance	6,700,000
Shares available for grant	800,000