Components Of Shareholders Equity [Line Items]

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- Definition

Treasury stock repurchased, and treasury stock repurchased and retired, amount

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Treasury stock repurchased, and treasury stock repurchased and retired, shares

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Description of voting rights of common stock. Includes eligibility to vote and votes per share owned. Include also, if any, unusual voting rights.

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Date the declared dividend will be paid, in CCYY-MM-DD format.

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Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared, for example, but not limited to, common and preferred stock.

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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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Date the dividend to be paid was declared, in CCYY-MM-DD format.

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Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

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- Definition

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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Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.

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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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- Definition

Number of shares used to settle grantee's tax withholding obligation for award under share-based payment arrangement.

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- Definition

Number of treasury shares or units reissued. Excludes reissuance of shares or units in treasury for award under share-based payment arrangement.

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- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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Number of shares that have been repurchased and retired during the period.

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Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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

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Amount of decrease of par value, additional paid in capital (APIC) and retained earnings of common and preferred stock retired from treasury when treasury stock is accounted for under the cost method.

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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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Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended				12 Months Ended
	Oct. 17, 2019	Nov. 30, 2018	Oct. 31, 2018	Sep. 30, 2018	Aug. 31, 2018	Aug. 31, 2019	Sep. 01, 2018	Sep. 02, 2017
Components Of Shareholders Equity [Line Items]
Repurchase and retirement of common stock, Shares						8,212,000
Repurchase and retirement of common stock, Value						$ 493,612
Preferred stock, shares authorized						5,000,000	5,000,000
Preferred stock, shares issued						0	0
Preferred stock, shares outstanding						0	0
Subsequent Event [Member]
Components Of Shareholders Equity [Line Items]
Dividends declared date	Oct. 17, 2019
Dividends payable per share	$ 0.75
Dividend payable date	Nov. 26, 2019
Dividends record date	Nov. 12, 2019
Dividend payable amount	$ 41,924
Class A Common Stock [Member]
Components Of Shareholders Equity [Line Items]
Common stock shares repurchased		123,000	2,000	113,000	45,000
Repurchase and retirement of common stock, Shares		123,000	2,000	113,000
Cost of repurchase, per share		$ 81.22	$ 85.00	$ 84.29	$ 82.64
Common stock, votes per share						1
Class B Common Stock [Member]
Components Of Shareholders Equity [Line Items]
Common stock, votes per share						10
Treasury Stock [Member]
Components Of Shareholders Equity [Line Items]
Common stock shares repurchased							972,000
Purchase of treasury stock							$ 82,369
Cost of share repurchase						$ (493,612)
Treasury stock repurchased, and treasury stock repurchased and retired, shares						1,055,000
Treasury stock repurchased, and treasury stock repurchased and retired, amount						$ 84,611
Shares repurchased by the company for associates' tax withholding liability associated with share-based compensation						44,000	54,000
Number of shares authorized for repurchase						5,000,000
Maximum number of shares that can be repurchased						1,157,000
Treasury stock reissued to fund plan, shares						64,000	57,000
Treasury Stock [Member] \| Class A Common Stock [Member]
Components Of Shareholders Equity [Line Items]
Purchase of treasury stock						$ 24,284	$ 25,432	$ 48,869