Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings	$ 88,235	$ 88,852
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation	78,075	72,635
Amortization	8,115	7,752
Deferred income taxes	(5,828)	(4,554)
Gain on sales of plant and equipment	(1,731)	(959)
Stock-based compensation expense	13,650	14,830
Changes in assets and liabilities, excluding effects of business acquisitions:
Trade receivables, net	(9,151)	(9,104)
Inventories, net	15,064	347
Prepaid expenses and other current assets	32,548	1,163
Accounts payable, trade	(18,130)	(7,473)
Accrued expenses and other current liabilities	23,211	31,567
Other, net	(315)	1,916
Net cash provided by operating activities	223,743	196,972
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(155,719)	(108,580)
Proceeds from sales of plant and equipment	5,153	5,452
Business acquisitions and holdback settlements	(26,182)	(23,463)
Other, net	917	(1,113)
Net cash used in investing activities	(175,831)	(127,704)
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase (decrease) in short-term debt	89,818	(335,015)
Proceeds from borrowings of long-term debt	28,939	300,528
Repayment of long-term debt	(4,579)	(553)
Financing costs	(29)	(2,133)
Purchase of treasury stock	(103,839)	0
Proceeds from the exercise of stock options	6,977	11,578
Stock issued for the Employee Stock Purchase Plan	4,836	4,602
Excess tax benefit realized from the exercise of stock options	3,891	4,063
Dividends paid to stockholders	(44,873)	(40,914)
Change in cash overdraft	(7,569)	(3,673)
Net cash used in financing activities	(26,428)	(61,517)
Change in cash	21,484	7,751
Cash – Beginning of period	50,724	69,561
Cash – End of period	$ 72,208	$ 77,312