Changes in Equity (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010
Stockholders Equity Note [Line Items]
Beginning Balance	$ 5,113,488	$ 4,992,577	$ 5,488,336	$ 4,459,400
Net income	242,343	231,818	540,501	480,848
Other comprehensive income (loss):
Foreign currency translation (net of tax of $3,371 in 3 months ended 2011, $19,566 in 6 months ended 2011, $12,397 in 3 months ended 2010 and $17,487 in 6 months ended 2010)	(60,992)	11,638	(350,267)	295,376
Retirement benefits plan activity (net of tax of $11,640 in 3 months ended 2011, $22,524 in 6 months ended 2011, $11,647 in 3 months ended 2010 and $22,289 in 6 months ended 2010)	19,106	19,844	37,296	38,062
Net realized loss (net of tax of $25 in 3 months ended 2011, $50 in 6 months ended 2011, $32 in 3 months ended 2010 and $68 in 6 months ended 2010)	51	51	102	110
Total comprehensive income	200,508	263,351	227,632	814,396
Dividends paid	(56,027)	(47,259)	(119,031)	(90,907)
Stock incentive plan activity	17,934	25,924	39,832	61,704
Acquisition activity			(68,894)
Shares purchased at cost	(20,000)	(20,000)	(311,972)	(30,000)
Ending Balance	5,255,903	5,214,593	5,255,903	5,214,593
Stockholders' Equity
Stockholders Equity Note [Line Items]
Beginning Balance	5,017,264	4,894,945	5,383,854	4,367,965
Net income	240,766	230,180	537,784	477,351
Other comprehensive income (loss):
Foreign currency translation (net of tax of $3,371 in 3 months ended 2011, $19,566 in 6 months ended 2011, $12,397 in 3 months ended 2010 and $17,487 in 6 months ended 2010)	(60,982)	9,301	(351,759)	288,701
Retirement benefits plan activity (net of tax of $11,640 in 3 months ended 2011, $22,524 in 6 months ended 2011, $11,647 in 3 months ended 2010 and $22,289 in 6 months ended 2010)	19,106	19,844	37,296	38,062
Net realized loss (net of tax of $25 in 3 months ended 2011, $50 in 6 months ended 2011, $32 in 3 months ended 2010 and $68 in 6 months ended 2010)	51	51	102	110
Total comprehensive income	198,941	259,376	223,423	804,224
Dividends paid	(56,013)	(46,984)	(112,091)	(90,632)
Stock incentive plan activity	17,934	25,924	39,832	61,704
Acquisition activity			(64,920)
Shares purchased at cost	(20,000)	(20,000)	(311,972)	(30,000)
Ending Balance	5,158,126	5,113,261	5,158,126	5,113,261
Noncontrolling Interests
Stockholders Equity Note [Line Items]
Beginning Balance	96,224	97,632	104,482	91,435
Net income	1,577	1,638	2,717	3,497
Other comprehensive income (loss):
Foreign currency translation (net of tax of $3,371 in 3 months ended 2011, $19,566 in 6 months ended 2011, $12,397 in 3 months ended 2010 and $17,487 in 6 months ended 2010)	(10)	2,337	1,492	6,675
Total comprehensive income	1,567	3,975	4,209	10,172
Dividends paid	(14)	(275)	(6,940)	(275)
Acquisition activity			(3,974)
Ending Balance	$ 97,777	$ 101,332	$ 97,777	$ 101,332