No definition available.

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- Definition

The amount paid for shares purchased on the open market for issuance to employees under the plan.

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No definition available.

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- Definition

Number of shares issued in settlement of performance units vested in period

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No definition available.

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Value of shares issued in settlement of performance units vested in period

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No definition available.

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Number of share instruments newly issued under a share-based compensation plan.

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No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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- Definition

Amount of cash outflow to reacquire equity classified as other.

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- Definition

The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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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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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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SHARE-BASED COMPENSATION PROGRAMS (Details) - USD ($) $ in Thousands, shares in Millions		3 Months Ended
	Mar. 24, 2017	Mar. 31, 2017	Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		$ 11,176	$ 2,607
Purchased Holding Units to help fund anticipated obligations under its incentive compensation award program Value		$ 31,000	$ 40,000
Alliance Bernstein
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchased Holding Units to help fund anticipated obligations under its incentive compensation award program shares (in shares)		1.3	1.9
Open market purchase (in shares)		1.2	1.8
Open market purchase value		$ 28,000	$ 38,000
Restricted holding unit awards granted to employees (in shares)		0.3	0.1
Purchased Holding Units to help fund anticipated obligations under its incentive compensation award program Value		$ 31,000	$ 40,000
Proceeds from Stock Options Exercised		4,500	1,500
Performance Units/Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		3,402	2,218
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		9	109
Employee Stock Option \| Alliance Bernstein
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		0	0
Restricted Stock \| Alliance Bernstein
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		7,700	1,200
Other compensation plan \| Parent Company
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		$ 65	$ (920)
Performance Unit Plan Year 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation arrangement by share based payment award equity instruments other than options equity settlement of vested units with ordinary shares value	$ 21,000
Performance shares earned (in shares)	1.0
Employees and eligible Directors [Member] \| Alliance Bernstein
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted holding unit awards granted to employees (in shares)		1.1	0.3