Share-Based Payments (Tables)

3 Months Ended

Dec. 31, 2017

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

Summary of Option Activity

Stock Options

The following table summarizes option activity during the quarter ended December 31, 2017:

	Shares		Weighted-average Exercise Price		Weighted-average Remaining Contractual Term	Aggregate Intrinsic Value
	(In thousands)				(In years)	(In thousands)
Outstanding at October 1, 2017	1,230		$	56.54
Granted	3		157.31
Exercised	(21	)	33.10
Outstanding at December 31, 2017	1,212		$	57.19	2.90	$	116,380
Exercisable at December 31, 2017	1,051		$	53.34	2.68	$	105,003
Vested and expected to vest at December 31, 2017	1,207		$	57.06	2.89	$	116,081

Summary of Restricted Stock Unit Activity

Restricted Stock Units

The following table summarizes restricted stock unit activity during the quarter ended December 31, 2017:

	Shares		Weighted- average Grant-date Fair Value
	(In thousands)
Outstanding at October 1, 2017	1,144		$	97.95
Granted	358		157.11
Released	(351	)	86.88
Forfeited	(5	)	109.08
Outstanding at December 31, 2017	1,146		$	119.76

Summary of Performance Share Unit Activity

Performance Share Units

The following table summarizes performance share unit activity during the quarter ended December 31, 2017:

	Shares		Weighted- average Grant-date Fair Value
	(In thousands)
Outstanding at October 1, 2017	204		$	105.37
Granted	51		157.03
Released	(95	)	98.15
Outstanding at December 31, 2017	160		$	126.27

Summary of Market Share Unit Activity

Market Share Units

The following table summarizes market share unit activity during the quarter ended December 31, 2017:

	Shares		Weighted- average Grant-date Fair Value
	(In thousands)
Outstanding at October 1, 2017	131		$	123.82
Granted	102		151.78
Released	(119	)	113.70
Outstanding at December 31, 2017	114		$	159.34