Retirement Benefits (Details2) (USD $)	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	$ 2,960,028,000	$ 2,849,479,000
Dividend and interest receivable		4,559,000
Administrative expenses	(1,727,000)
Level 3 Rollforward
Beginning balance as at	85,992,000	61,249,000
Net actual return on plan assets relating to assets still held at the end of the year	3,281,000	6,872,000
Net purchases, sales and settlements	21,184,000	14,343,000
Change in foreign currency exchange rates	(3,035,000)	3,528,000
Beginning balance as at	107,422,000	85,992,000
Level 1 | North America Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	724,282,000	528,339,000
Level 1 | Europe Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	168,856,000	150,878,000
Level 2 | North America Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	1,484,161,000	1,591,916,000
Level 2 | Europe Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	475,307,000	492,354,000
Level 3 | North America Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	62,601,000	50,066,000
Level 3 | Europe Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	44,821,000	35,926,000
Cash [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	20,186,000	21,016,000
Cash [Member] | Level 1 | North America Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	4,342,000	5,837,000
Cash [Member] | Level 1 | Europe Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	15,844,000	15,179,000
Cash Equivalents [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	22,988,000	40,053,000
Cash Equivalents [Member] | Level 2 | North America Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	22,988,000	40,053,000
U.S. large cap companies
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	37,422,000	30,479,000
U.S. large cap companies | Level 1 | North America Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	37,422,000	30,479,000
U.S. mid cap companies
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	72,427,000	73,887,000
U.S. mid cap companies | Level 1 | North America Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	72,427,000	73,887,000
U.S. small cap companies
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	82,686,000	86,199,000
U.S. small cap companies | Level 1 | North America Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	82,686,000	86,199,000
International equities
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	289,877,000	227,727,000
International equities | Level 1 | North America Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	274,893,000	213,275,000
International equities | Level 1 | Europe Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	14,984,000	14,452,000
US Treasury Securities [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	263,753,000	199,646,000
US Treasury Securities [Member] | Level 1 | North America Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	252,512,000	46,660,000
US Treasury Securities [Member] | Level 2 | North America Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	11,241,000	152,986,000
Corporate Debt Securities [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments		541,086,000
Corporate Debt Securities [Member] | Level 2 | North America Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments		428,156,000
Corporate Debt Securities [Member] | Level 2 | Europe Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments		112,930,000
Corporate bonds (S&P rating of A or higher)
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	358,269,000
Corporate bonds (S&P rating of A or higher) | Level 2 | North America Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	236,033,000
Corporate bonds (S&P rating of A or higher) | Level 2 | Europe Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	122,236,000
Corporate bonds (S&P rating of lower than A)
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	248,120,000
Corporate bonds (S&P rating of lower than A) | Level 2 | North America Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	248,120,000
Other Fixed Income [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	183,800,000	269,695,000
Other Fixed Income [Member] | Level 1 | North America Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments		72,002,000
Other Fixed Income [Member] | Level 1 | Europe Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	138,028,000	121,247,000
Other Fixed Income [Member] | Level 2 | North America Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	45,772,000	50,183,000
Other Fixed Income [Member] | Level 2 | Europe Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments		26,263,000
Pooled Funds [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	768,487,000	787,369,000
Pooled Funds [Member] | Level 2 | North America Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	415,416,000	434,208,000
Pooled Funds [Member] | Level 2 | Europe Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	353,071,000	353,161,000
Mutual Funds [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	504,756,000	488,495,000
Mutual Funds [Member] | Level 2 | North America Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	504,756,000	488,495,000
Private Equity Funds [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	91,574,000	68,151,000
Level 3 Rollforward
Beginning balance as at	46,843,000
Net actual return on plan assets relating to assets still held at the end of the year	2,648,000	6,817,000
Net purchases, sales and settlements	21,652,000	13,624,000
Change in foreign currency exchange rates	(877,000)	867,000
Beginning balance as at		46,843,000
Private Equity Funds [Member] | Level 3 | North America Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	62,601,000	50,066,000
Private Equity Funds [Member] | Level 3 | Europe Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	28,973,000	18,085,000
Derivative Assets [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	12,968,000	30,377,000
Derivative Assets [Member] | Level 2 | North America Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	12,968,000	30,377,000
Insurance Contracts [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	15,848,000	17,841,000
Level 3 Rollforward
Beginning balance as at	14,406,000
Net actual return on plan assets relating to assets still held at the end of the year	633,000	55,000
Net purchases, sales and settlements	(468,000)	719,000
Change in foreign currency exchange rates	(2,158,000)	2,661,000
Beginning balance as at		14,406,000
Insurance Contracts [Member] | Level 3 | Europe Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	15,848,000	17,841,000
Total Assets [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	2,973,161,000	2,882,021,000
Total Assets [Member] | Level 1 | North America Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	724,282,000	528,339,000
Total Assets [Member] | Level 1 | Europe Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	168,856,000	150,878,000
Total Assets [Member] | Level 2 | North America Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	1,497,294,000	1,624,458,000
Total Assets [Member] | Level 2 | Europe Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	475,307,000	492,354,000
Total Assets [Member] | Level 3 | North America Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	62,601,000	50,066,000
Total Assets [Member] | Level 3 | Europe Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	44,821,000	35,926,000
Derivative Liabilities [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	13,133,000	32,542,000
Derivative Liabilities [Member] | Level 2 | North America Pension Plans [Member]
Fair Value Of Plan Assets [Abstract]
Net assets held in investments	$ 13,133,000	$ 32,542,000