Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings	$ 186,269	$ 187,164
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation	157,326	145,795
Amortization	16,736	15,657
Deferred income taxes	(11,705)	(6,702)
Gain on sales of plant and equipment	(2,365)	(1,338)
Stock-based compensation expense	19,572	20,833
Changes in assets and liabilities, excluding effects of business acquisitions:
Trade receivables, net	(5,971)	(12,812)
Inventories, net	6,632	(7,226)
Prepaid expenses and other current assets	17,957	(5,395)
Accounts payable, trade	(11,732)	6,513
Accrued expenses and other current liabilities	2,923	2,514
Other, net	(3,981)	(3,085)
Net cash provided by operating activities	371,661	341,918
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(269,982)	(220,872)
Proceeds from sales of plant and equipment	10,665	10,634
Business acquisitions and holdback settlements	(98,144)	(29,834)
Other, net	763	716
Net cash used in investing activities	(356,698)	(239,356)
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase in short-term debt	230,667	45,112
Proceeds from borrowings of long-term debt	467,617	306,254
Repayment of long-term debt	(259,305)	(403,757)
Financing costs	(3,044)	(2,398)
Purchase of treasury stock	(374,706)	0
Proceeds from the exercise of stock options	12,406	19,830
Stock issued for the Employee Stock Purchase Plan	9,614	8,994
Excess tax benefit realized from the exercise of stock options	4,233	5,091
Dividends paid to stockholders	(88,515)	(81,942)
Change in cash overdraft	(6,580)	(3,595)
Net cash used in financing activities	(7,613)	(106,411)
Change in cash	7,350	(3,849)
Cash – Beginning of period	50,724	69,561
Cash – End of period	$ 58,074	$ 65,712