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Shareholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 01, 2017	Oct. 02, 2016	Oct. 01, 2017	Oct. 02, 2016	Dec. 31, 2017	Aug. 31, 2017	May 31, 2017	Jan. 31, 2017	Dec. 31, 2016	Aug. 31, 2016	May 31, 2016	Jan. 31, 2016
Stockholders Equity Note Disclosure [Line Items]
Stock repurchase program, authorized amount									$ 500,000,000
Repurchase of stock, value				$ 85,100,000
Cumulative repurchases, shares	4.6		4.6
Cumulative repurchases, value	$ 151,800,000		$ 151,800,000
Common stock average price			$ 32.66	$ 19.69
Repurchase of stock, shares				4.3
Dividends payable, amount per share						$ 0.07	$ 0.07	$ 0.07		$ 0.06	$ 0.06	$ 0.06
Dividend payment	$ 13,800,000	$ 12,100,000	$ 41,730,000	$ 36,548,000
Minimum | Scenario, Forecast
Stockholders Equity Note Disclosure [Line Items]
Repurchase of stock, value					$ 200,000,000

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Stockholders Equity Note Disclosure [Line Items]

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The per share amount of a dividend declared, but not paid, as of the financial reporting date.

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Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.

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Amount of 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 common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.

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