Stock Based Compensation (Tables)

6 Months Ended

Jun. 27, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock option activity for 2015 is summarized in the following table:



	Shares subject to option		Weighted average exercise price per share		Aggregate intrinsic value (in millions)
Outstanding at December 27, 2014	2,192,136		$	48.95
Granted	7,132		62.40
Expired / Forfeited	(5,469	)	69.04
Exercised	(110,535	)	44.73
Outstanding at June 27, 2015	2,083,264		$	49.15	$	41.7
Exercisable at June 27, 2015	1,471,794		$	41.26	$	39.7

Time Vested, Performance Vested and Market Vested Share Awards Activity

The Company also has time-vested, performance-vested and market-vested share awards. The activity for such awards in 2015 is summarized in the following table:



	Shares outstanding		Weighted average grant date fair value
December 27, 2014	651,849		$	59.76
Time-vested shares granted	21,287		65.72
Market-vested shares granted	23,637		64.21
Performance shares granted	62,722		72.61
Performance share adjustments	2,735		79.42
Vested	(249,819	)	36.48
Forfeited	(3,551	)	72.13
June 27, 2015	508,860		$	73.11

Schedule of Compensation Expense

Compensation expense related to the Company's stock based compensation for the second quarter and year-to-date periods ended June 27, 2015 and June 28, 2014 were as follows:



	Second Quarter				Year-to-Date
(In millions)	2015		2014		2015		2014
Stock options	$	0.5	$	0.5	$	1.1	$	0.9
Time, performance and market vested share awards	3.9		3.0		7.1		7.6