Consolidated Statement Of Cash Flows (USD $) In Thousands	6 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings	$ 152,544	$ 131,364
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities:
Depreciation	120,649	110,479
Amortization	12,404	12,413
Impairment	2,500
Deferred income taxes	21,675	19,650
(Gain) loss on sales of plant and equipment	(532)	1,149
Stock-based compensation expense	17,070	15,269
Losses on the extinguishment of debt		4,162
Changes in assets and liabilities, excluding effects of business acquisitions:
Securitization of trade receivables		(295,000)
Trade receivables, net	(43,248)	(38,251)
Inventories, net	(6,815)	(3,370)
Prepaid expenses and other current assets	(4)	5,787
Accounts payable, trade	(9,692)	(4,406)
Accrued expenses and other current liabilities	(66,009)	28,099
Other non-current assets	2,067	1,492
Other non-current liabilities	(1,357)	(5,394)
Net cash provided by (used in) operating activities	201,252	(16,557)
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(166,812)	(117,337)
Proceeds from sales of plant and equipment	8,387	6,448
Business acquisitions and holdback settlements	(93,943)	(6,936)
Other, net	(443)	(523)
Net cash used in investing activities	(252,811)	(118,348)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from borrowings	1,063,083	750,544
Repayment of debt	(704,220)	(595,319)
Financing costs	(4,203)	(8,009)
Premium paid on redemption of senior subordinated notes		(3,175)
Purchase of treasury stock	(300,000)
Proceeds from the exercise of stock options	10,862	13,057
Stock issued for the Employee Stock Purchase Plan	7,381	7,374
Tax benefit realized from the exercise of stock options	4,722	4,286
Dividends paid to stockholders	(46,474)	(39,315)
Change in cash overdraft	(109)	11,813
Net cash provided by financing activities	31,042	141,256
Change in cash	(20,517)	6,351
Cash - Beginning of period	57,218	47,001
Cash - End of period	$ 36,701	$ 53,352