Stock-Based Compensation (Tables)

6 Months Ended

Sep. 01, 2018

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The fair value of the stock options granted was estimated on the date of the grant using a Black-Scholes option-pricing model that uses the assumptions noted in the following table.



	Six Months Ended
Black-Scholes Valuation Assumptions (1)	September 1, 2018		August 26, 2017
Weighted Average Expected Life (in years) (2)	6.7		6.7
Weighted Average Expected Volatility (3)	34.96	%	26.49	%
Weighted Average Risk Free Interest Rates (4)	2.92	%	2.17	%
Expected Dividend Yield (5)	3.80	%	1.60	%

(1) Forfeitures are estimated based on historical experience.

(2) The expected life of stock options is estimated based on historical experience.

(3) Expected volatility is based on the average of historical and implied volatility. The historical volatility is determined by observing actual prices of the Company's stock over a period commensurate with the expected life of the awards. The implied volatility represents the implied volatility of the Company's call options, which are actively traded on multiple exchanges, had remaining maturities in excess of twelve months, had market prices close to the exercise prices of the employee stock options and were measured on the stock option grant date.

(4) Based on the U.S. Treasury constant maturity interest rate whose term is consistent with the expected life of the stock options.

(5) Expected dividend yield is estimated based on anticipated dividend payouts.

Share-based Compensation, Stock Options, Activity

Changes in the Company's stock options for the six months ended September 1, 2018 were as follows:



(Shares in thousands)	Number of Stock Options		Weighted Average Exercise Price
Options outstanding, beginning of period	4,241		$	55.76
Granted	1,065		16.85
Exercised	—		—
Forfeited or expired	(781	)	48.13
Options outstanding, end of period	4,525		$	47.92
Options exercisable, end of period	2,439		$	61.75

Schedule of Share-based Compensation, Restricted Stock Awards Activity

Changes in the Company's restricted stock for the six months ended September 1, 2018 were as follows:



(Shares in thousands)	Number of Restricted Shares		Weighted Average Grant-Date Fair Value
Unvested restricted stock, beginning of period	4,311		$	48.07
Granted	659		18.27
Vested	(737	)	58.34
Forfeited	(210	)	43.06
Unvested restricted stock, end of period	4,023		$	41.57

Share-based Compensation, Performance Stock Units Activity

Changes in the Company's PSUs for the six months ended September 1, 2018 were as follows:



(Shares in thousands)	Number of Performance Stock Units		Weighted Average Grant-Date Fair Value
Unvested performance stock units, beginning of period	1,352		$	46.06
Granted	1,274		16.90
Vested	(492	)	50.82
Forfeited	(52	)	43.28
Unvested performance stock units, end of period	2,082		$	27.16