Stock Compensation Plans	9 Months Ended
May. 31, 2015
Stock Compensation Plans [Abstract]
Stock Compensation Plans	13. Stock Compensation Plans The Walgreen Co. Omnibus Incentive Plan (the “Omnibus Plan”) which became effective in fiscal 2013, provides for incentive compensation to the Company’s non-employee directors, officers and employees, and consolidates into a single plan several previously existing equity compensation plans. A total of 60.4 million shares became available for delivery under the Omnibus Plan. In connection with the Reorganization, the Omnibus Plan was assumed by the Company and each Walgreens stock option, restricted stock unit award, performance share award, deferred stock unit award, and common stock converted automatically into an award with respect to the number of shares of common stock of the Company on a one-for-one basis. The Company’s awards continue to be subject to the same terms and conditions as those that were applicable to such award immediately prior to their conversion. The Company did not record any incremental compensation expense related to the conversion. The Company did not grant any stock options under the Omnibus Plan for the three month period ended May 31, 2015 compared to 116,478 stock options granted under the Omnibus Plan in the same three month period ended last year. The Company granted 4,117,968 stock options under the Omnibus Plan for the nine month period ended May 31, 2015, compared to 6,651,240 stock options granted under the Omnibus Plan in the same nine month period ended last year. Stock-based compensation expense, which includes stock option, restricted stock unit, and performance share grants, was $21 million for the three month and $86 million for the nine month periods ended May 31, 2015, compared to $33 million and $85 million for the same periods last year. Compensation expense for any individual quarter may not be representative of compensation expense for the entire fiscal year. Stock options granted in the current fiscal year had a weighted-average grant-date fair value of $14.64 using weighted average volatility, dividend yield and expected option life assumptions of 25.51%, 1.79% and 6.68 years, respectively, using the Black Scholes option pricing model. In accordance with ASC Topic 718 Compensation – Stock Compensation, compensation expense is recognized on a straight-line basis over the employee’s vesting period or to the employee’s retirement eligible date, if earlier. The recognized retiree eligible income recorded in the three and nine month periods ended May 31, 2015, was immaterial, compared to expense of $4 million and $12 million for the same periods in the prior year. The Company granted 5,823 and 1,137,994 restricted stock units under the Omnibus Plan for the three and nine month periods ended May 31, 2015, respectively, compared to 17,749 and 658,758 restricted stock units granted under the Omnibus Plan in the same three and nine month periods last year. Restricted stock units granted in the current fiscal year had a weighted average grant date stock price of $66.09. Dividends issued under the program, paid in the form of additional restricted stock units, totaled 14,097 units for the three months and 51,518 units for the nine months ended May 31, 2015 versus 17,612 units and 58,070 units in the same periods last year. The Company did not grant any performance shares under the Omnibus Plan for the three month period ended May 31, 2015 compared to 2,512 performance shares granted under the Omnibus Plan in the same three month period ended last year. The Company granted 484,011 performance shares under the Omnibus Plan for the nine month period ended May 31, 2015 compared to 705,451 performance shares in the same period last year. Performance shares granted in the current fiscal year had a weighted average grant date stock price of $65.30. In accordance with ASC Topic 718, compensation expense is recognized on a straight line basis based on a three year cliff vesting schedule for restricted stock unit awards and on a straight line basis over a three year performance period, based on performance targets, for performance share awards. For the three and nine month periods ended May 31, 2015, the Company recognized $16 million and $63 million, of expense related to these plans, respectively. In the same periods last year, the Company recognized $17 million and $43 million of expense, respectively. The intrinsic value for options exercised was $94 million for the three month and $320 million for the nine month periods ended May 31, 2015, respectively. The total fair value of options vested for the three month period ended May 31, 2015 was immaterial. The total fair value of options vested for the nine month period ended May 31, 2015, was $52 million. Cash received from the exercise of options was $62 million for the three months and $288 million for the nine months ended May 31, 2015, respectively. The related tax benefit realized was $35 million for the three months and $120 million for the nine months ended May 31, 2015, respectively.

13. Stock Compensation Plans

The Walgreen Co. Omnibus Incentive Plan (the “Omnibus Plan”) which became effective in fiscal 2013, provides for incentive compensation to the Company’s non-employee directors, officers and employees, and consolidates into a single plan several previously existing equity compensation plans. A total of 60.4 million shares became available for delivery under the Omnibus Plan.

In connection with the Reorganization, the Omnibus Plan was assumed by the Company and each Walgreens stock option, restricted stock unit award, performance share award, deferred stock unit award, and common stock converted automatically into an award with respect to the number of shares of common stock of the Company on a one-for-one basis. The Company’s awards continue to be subject to the same terms and conditions as those that were applicable to such award immediately prior to their conversion. The Company did not record any incremental compensation expense related to the conversion.

The Company did not grant any stock options under the Omnibus Plan for the three month period ended May 31, 2015 compared to 116,478 stock options granted under the Omnibus Plan in the same three month period ended last year. The Company granted 4,117,968 stock options under the Omnibus Plan for the nine month period ended May 31, 2015, compared to 6,651,240 stock options granted under the Omnibus Plan in the same nine month period ended last year. Stock-based compensation expense, which includes stock option, restricted stock unit, and performance share grants, was $21 million for the three month and $86 million for the nine month periods ended May 31, 2015, compared to $33 million and $85 million for the same periods last year. Compensation expense for any individual quarter may not be representative of compensation expense for the entire fiscal year. Stock options granted in the current fiscal year had a weighted-average grant-date fair value of $14.64 using weighted average volatility, dividend yield and expected option life assumptions of 25.51%, 1.79% and 6.68 years, respectively, using the Black Scholes option pricing model. In accordance with ASC Topic 718 Compensation – Stock Compensation, compensation expense is recognized on a straight-line basis over the employee’s vesting period or to the employee’s retirement eligible date, if earlier. The recognized retiree eligible income recorded in the three and nine month periods ended May 31, 2015, was immaterial, compared to expense of $4 million and $12 million for the same periods in the prior year.

The Company granted 5,823 and 1,137,994 restricted stock units under the Omnibus Plan for the three and nine month periods ended May 31, 2015, respectively, compared to 17,749 and 658,758 restricted stock units granted under the Omnibus Plan in the same three and nine month periods last year. Restricted stock units granted in the current fiscal year had a weighted average grant date stock price of $66.09. Dividends issued under the program, paid in the form of additional restricted stock units, totaled 14,097 units for the three months and 51,518 units for the nine months ended May 31, 2015 versus 17,612 units and 58,070 units in the same periods last year. The Company did not grant any performance shares under the Omnibus Plan for the three month period ended May 31, 2015 compared to 2,512 performance shares granted under the Omnibus Plan in the same three month period ended last year. The Company granted 484,011 performance shares under the Omnibus Plan for the nine month period ended May 31, 2015 compared to 705,451 performance shares in the same period last year. Performance shares granted in the current fiscal year had a weighted average grant date stock price of $65.30. In accordance with ASC Topic 718, compensation expense is recognized on a straight line basis based on a three year cliff vesting schedule for restricted stock unit awards and on a straight line basis over a three year performance period, based on performance targets, for performance share awards. For the three and nine month periods ended May 31, 2015, the Company recognized $16 million and $63 million, of expense related to these plans, respectively. In the same periods last year, the Company recognized $17 million and $43 million of expense, respectively.

The intrinsic value for options exercised was $94 million for the three month and $320 million for the nine month periods ended May 31, 2015, respectively. The total fair value of options vested for the three month period ended May 31, 2015 was immaterial. The total fair value of options vested for the nine month period ended May 31, 2015, was $52 million.

Cash received from the exercise of options was $62 million for the three months and $288 million for the nine months ended May 31, 2015, respectively. The related tax benefit realized was $35 million for the three months and $120 million for the nine months ended May 31, 2015, respectively.