Amount of increase to the stock repurchase program.

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Aggregate dividends paid during the period for each share of common stock outstanding.

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Aggregate dividends declared during the period for each share of common stock outstanding.

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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

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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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No definition available.

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- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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

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Price of a single share of a number of saleable stocks of a company.

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No definition available.

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Percentage of vesting of share-based compensation awards.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Amount remaining of a stock repurchase plan authorized.

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No definition available.

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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 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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Shareholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands			3 Months Ended		9 Months Ended
	Jun. 16, 2017	May 24, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Oct. 24, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost			$ 57,525		$ 57,525
Total intrinsic value of options exercised					59,991
Aggregate intrinsic value of options exercisable			$ 192,056		$ 192,056
Market value of Company's common stock			$ 61.06		$ 61.06
Weighted average exercise price per share			$ 21.34		$ 21.34
Total options outstanding			16,158		16,158
Total options exercisable			4,835		4,835
Dividends declared per common share		$ 0.28	$ 0	$ 0	$ 0.28	$ 0.26
Cash dividends paid per common share	$ 0.28
Cash dividends declared on the Company's common stock					$ 44,264	$ 42,001
Common Stock Buyback [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares purchased and retired					3,538
Company purchased, cost					$ 188,276
Remaining stock repurchase authorization amount			$ 30,476		$ 30,476
2014 Plan [Member] \| Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rate					50.00%
2014 Plan [Member] \| Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rate					50.00%
Subsequent Event [Member] \| Common Stock Buyback [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining stock repurchase authorization amount							$ 230,476
Increase in authorization for stock repurchase program							$ 200,000