Pension and Other Postretirement and Postemployment Benefits (Details 9) (USD $) In Thousands	Jun. 30, 2011	Jun. 30, 2010
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	$ 732,412	$ 656,574
Fair Value, Inputs, Level 1 [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	95,126	77,227
Fair Value, Inputs, Level 1 [Member] | Corporate Debt Securities [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 1 [Member] | Value Funds [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 1 [Member] | Growth Funds [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 1 [Member] | Balanced Funds[ Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 1 [Member] | Common Stock [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	93,403	75,714
Fair Value, Inputs, Level 1 [Member] | US Government Agencies Debt Securities [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 1 [Member] | Foreign Government Debt Securities [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 1 [Member] | Other Fixed Income Securities [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 1 [Member] | Other Investment [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	1,723	1,513
Fair Value, Inputs, Level 2 [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	637,286	579,347
Fair Value, Inputs, Level 2 [Member] | Corporate Debt Securities [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	338,955	364,773
Fair Value, Inputs, Level 2 [Member] | Value Funds [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	92,625	74,532
Fair Value, Inputs, Level 2 [Member] | Growth Funds [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	54,392	42,985
Fair Value, Inputs, Level 2 [Member] | Balanced Funds[ Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	15,798	12,460
Fair Value, Inputs, Level 2 [Member] | Common Stock [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 2 [Member] | US Government Agencies Debt Securities [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	30,236	30,562
Fair Value, Inputs, Level 2 [Member] | Foreign Government Debt Securities [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	27,465	20,627
Fair Value, Inputs, Level 2 [Member] | Other Fixed Income Securities [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	41,043	17,114
Fair Value, Inputs, Level 2 [Member] | Other Investment [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	36,772	16,294
Fair Value, Inputs, Level 3 [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] | Corporate Debt Securities [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] | Value Funds [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] | Growth Funds [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] | Balanced Funds[ Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] | Common Stock [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] | US Government Agencies Debt Securities [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] | Foreign Government Debt Securities [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] | Other Fixed Income Securities [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] | Other Investment [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Corporate Debt Securities [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	338,955	364,773
Value Funds [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	92,625	74,532
Growth Funds [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	54,392	42,985
Balanced Funds[ Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	15,798	12,460
Common Stock [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	93,403	75,714
US Government Agencies Debt Securities [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	30,236	30,562
Foreign Government Debt Securities [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	27,465	20,627
Other Fixed Income Securities [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	41,043	17,114
Other Investment [Member]
Benefit plan assets classified under the appropriate level of the fair value
Defined Benefit Plan, Fair Value of Plan Assets	$ 38,495	$ 17,807