Share-Based Compensation (Tables)

3 Months Ended

Dec. 31, 2015

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

Summary of Share-based Compensation Arrangements

A summary of our share-based compensation expense during the three months endedDecember 31, 2015 and 2014 is as follows:

	Three Months Ended December 31,
(In thousands, except average service periods)	2015		2014
Share-based compensation recognized	$	2,371	$	4,024
Unrecognized compensation cost, net of estimated forfeitures	25,940		29,089
Remaining weighted-average service period (years)	2.3		2.3

Schedule of Restricted Stock Activity

A summary of our restricted stock activity for the three months endedDecember 31, 2015 is as follows:

	Number of Shares (000s)		Weighted Average Fair Value
Unvested at October 1, 2015	711		$	43.14
Granted	569		15.28
Vested	(162	)	46.99
Forfeited	(18	)	44.58
Unvested at December 31, 2015	1,100		28.14

Schedule of Performance-based Units Activity

A summary of performance unit stock activity for the three months endedDecember 31, 2015 is as follows:

	Number of Shares (000s)	Weighted Average Fair Value
Unvested at October 1, 2015	240	$	43.73
Granted	254	15.63
Vested	—	—
Forfeited	—	—
Unvested at December 31, 2015	494	29.26

Summary of Stock Option Activity

A summary of stock option activity for the three months endedDecember 31, 2015 is as follows:

	Number of Options (000s)		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value  (000s)
Outstanding at October 1, 2015	685		$	34.90
Granted	—		—
Exercised	—		—			—
Forfeited	—		—
Expired	(10	)	18.58
Outstanding at December 31, 2015	675		35.15		4.1	(16,822	)
Exercisable at December 31, 2015	675		35.15		4.1	(16,822	)