Stock-Based Compensation (Tables)

3 Months Ended

Jun. 30, 2015

Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]

Stock-Based Compensation Expense Recognized [Table Text Block]

The following table summarizes stock-based compensation expense recognized by the Company for the three months ended June 30, 2015 and 2014:

	Three Months Ended
	June 30,
(In thousands)	2015			2014
Stock-based compensation expense related to:
Equity Incentive Plan (a)	$	12,495		$	13,772
Employee Stock Purchase Plan - options to purchase stock	1,155			1,058
	13,650			14,830
Tax benefit	(4,964		)	(5,509		)
Stock-based compensation expense, net of tax	$	8,686		$	9,321

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^(a) Stock-based compensation expense related to stock options granted under the Company’s Equity Incentive Plan is highest during the Company’s fiscal first quarter ended June 30^th relative to other quarters during the year. This is primarily due to a retirement-eligible vesting provision under the plan and the timing of the majority of the Company’s stock option awards each year during its fiscal first quarter.

Summary of Stock Option Activity [Table Text Block]

The following table summarizes the stock option activity during the three months endedJune 30, 2015:

(In thousands, except per share amounts)	Number of Stock Options		Weighted-Average Exercise Price
Outstanding at March 31, 2015	4,974		$	79.76
Granted	963		$	103.62
Exercised	(178	)	$	45.74
Forfeited	(26	)	$	98.22
Outstanding at June 30, 2015	5,733		$	84.73
Vested or expected to vest at June 30, 2015	5,701		$	84.62
Exercisable at June 30, 2015	3,492		$	73.15

ESPP - Purchase Option Activity [Table Text Block]

The following table summarizes the activity of the ESPP during the three months endedJune 30, 2015:

(In thousands, except per share amounts)	Number of Purchase Options		Weighted-Average Exercise Price
Outstanding at March 31, 2015	54		$	86.47
Granted	218		$	89.33
Exercised	(54	)	$	89.33
Outstanding at June 30, 2015	218		$	88.62