Stockholders' Equity Stockholders' Equity (Notes)

9 Months Ended

Jun. 30, 2018

Stockholders' Equity Attributable to Parent [Abstract]

Stockholders' Equity Note Disclosure [Text Block]

Stockholders' Equity

Share Repurchases

On April 29, 2013, our Board of Directors approved a share repurchase program for up to $500.0 million, which was increased by $500.0 million on April 29, 2015. Under the terms of the share repurchase program, we have the ability to repurchase shares through a variety of methods, which may include open market purchases, privately negotiated transactions, block trades, accelerated stock repurchase transactions, or any combination of such methods. The share repurchase program does not require us to acquire any specific number of shares and may be modified, suspended, extended or terminated by us at any time without prior notice. The timing and the amount of any purchases will be determined by management based on an evaluation of market conditions, capital allocation alternatives, and other factors.

For the three and nine months endedJune 30, 2018, we repurchased 8.1 million shares of our common stock for $112.0 million under the program. For the nine months endedJune 30, 2017, we repurchased 5.8 million shares of our common stock for $99.1 million under the program. Since the commencement of the program, we have repurchased an aggregate of 54.6 million shares for $918.6 million. The amount paid in excess of par value is recognized in additional paid in capital. Shares were retired upon repurchase. As of June 30, 2018, approximately $81.4 million remained available for future repurchases under the program.

On August 1, 2018, our Board of Directors approved an additional $500.0 million under our share repurchase program. Since the beginning of the fourth quarter of fiscal year 2018, we have repurchased approximately 1.1 million shares of our common stock for approximately $16.0 million.