Income Taxes	9 Months Ended
Jun. 30, 2015
Income Taxes [Abstract]
Income Taxes [Text Block]	Note 3. Income Taxes The Company files income tax returns in U.S. federal and state jurisdictions as well as various foreign jurisdictions. As of June 30, 2015, the Company had unrecognized tax benefits, defined as the aggregate tax effect of differences between tax return positions and the benefits recognized in the Company’s financial statements, of $55.5 million ($39.1 million, net of federal benefit). If recognized, these tax benefits would reduce income tax expense and the effective tax rate. Included in this amount is $8.7 million of interest and penalties, which the Company records in income tax expense. During the nine months ended June 30, 2015, unrecognized tax benefits increased by $4.9 million. During the next 12 months, it is reasonably possible that state tax audit resolutions and the expiration of statutes of limitations could result in a reduction of unrecognized tax benefits by approximately $6.7 million. In March 2013, the Company issued Warrants (as defined in Note 6) in connection with various agreements and arrangements with Walgreens Boots Alliance, Inc. (“WBA”), as successor in interest to Walgreen Co. (“Walgreens”) and Alliance Boots GmbH (“Alliance Boots”). As of the date of issuance, the Warrants were valued at $242.4 million, which approximates the amount that will be deductible for income tax purposes. The fair value of the Warrants as of June 30, 2015 was $2,421.5 million. The excess of the fair value of the Warrants over the initial value is not tax deductible. As a result, in periods where the fair value of the Warrants exceeds the initial value, the Company’s effective income tax rate will be higher than its normal historical rate.

Income Taxes

9 Months Ended

Jun. 30, 2015

Note 3. Income Taxes

The Company files income tax returns in U.S. federal and state jurisdictions as well as various foreign jurisdictions. As of June 30, 2015, the Company had unrecognized tax benefits, defined as the aggregate tax effect of differences between tax return positions and the benefits recognized in the Company’s financial statements, of $55.5 million ($39.1 million, net of federal benefit). If recognized, these tax benefits would reduce income tax expense and the effective tax rate. Included in this amount is $8.7 million of interest and penalties, which the Company records in income tax expense. During the nine months ended June 30, 2015, unrecognized tax benefits increased by $4.9 million. During the next 12 months, it is reasonably possible that state tax audit resolutions and the expiration of statutes of limitations could result in a reduction of unrecognized tax benefits by approximately $6.7 million.

In March 2013, the Company issued Warrants (as defined in Note 6) in connection with various agreements and arrangements with Walgreens Boots Alliance, Inc. (“WBA”), as successor in interest to Walgreen Co. (“Walgreens”) and Alliance Boots GmbH (“Alliance Boots”). As of the date of issuance, the Warrants were valued at $242.4 million, which approximates the amount that will be deductible for income tax purposes. The fair value of the Warrants as of June 30, 2015 was $2,421.5 million. The excess of the fair value of the Warrants over the initial value is not tax deductible. As a result, in periods where the fair value of the Warrants exceeds the initial value, the Company’s effective income tax rate will be higher than its normal historical rate.