v3.10.0.1

Earnings Per Share and Shareholders Equity - Additional Information (Detail) - USD ($)	3 Months Ended		12 Months Ended
	Dec. 28, 2018	Dec. 29, 2017	Sep. 28, 2018	Mar. 31, 2015	Oct. 31, 2014
Earnings Per Share And Shareholders Equity [Line Items]
Anti-dilutive shares excluded from computation of earnings per share	0
Preferred stock shares authorized	25,000
Preferred stock, par value	$ 100
Common stock, shares authorized	60,000,000		60,000,000
Common stock, par value	$ 0.20		$ 0.20
Preferred stock shares outstanding	0		0
Approved and authorized amount under the stock repurchase program				$ 400,000,000	$ 200,000,000
Additional approved and authorized amount under the stock repurchase program				$ 200,000,000
Stock repurchased during period, shares	0	287,500	601,400
Average price paid per share of repurchased stock		$ 71.11
Aggregate value of repurchased stock		$ 20,400,000
Remaining value of shares to repurchase in future	$ 48,000,000
Stock repurchased during period, shares	3,737,327
Aggregate value of repurchased stock	$ 352,000,000
Series B Preferred Stock
Earnings Per Share And Shareholders Equity [Line Items]
Preferred stock shares authorized	475,000
Preferred stock, par value	$ 1.00
Preferred stock shares outstanding	0		0

Additional stock repurchase program authorized amount.

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Earnings per share and shareholders equity.

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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Amount of stock repurchase plan authorized.

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Amount remaining of a stock repurchase plan authorized.

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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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Total cost of shares repurchased divided by the total number of shares repurchased.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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