Retirement Benefits (Tables)

9 Months Ended

Mar. 31, 2015

Pension Plans, Defined Benefit

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Schedule of Defined Benefit Plans Disclosures

Net pension benefit cost recognized included the following components:

	Three Months Ended						Nine Months Ended
	March 31,						March 31,
	2015			2014			2015			2014
Service cost	$	24,506		$	24,935		$	74,163		$	74,621
Interest cost	44,447			48,034			135,245			143,043
Expected return on plan assets	(54,658		)	(56,657		)	(164,847		)	(169,619		)
Amortization of prior service cost	2,306			2,949			6,903			8,843
Amortization of net actuarial loss	38,171			39,914			114,896			119,593
Amortization of initial net obligation	4			5			13			15
Net pension benefit cost	$	54,776		$	59,180		$	166,373		$	176,496

Other Postretirement Benefit Plans, Defined Benefit

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Schedule of Defined Benefit Plans Disclosures

Net postretirement benefit cost recognized included the following components:

	Three Months Ended						Nine Months Ended
	March 31,						March 31,
	2015			2014			2015			2014
Service cost	$	163		$	54		$	475		$	466
Interest cost	558			811			2,042			2,229
Amortization of prior service benefit	(29		)	(41		)	(91		)	(93		)
Amortization of net actuarial loss	327			56			829			756
Net postretirement benefit cost	$	1,019		$	880		$	3,255		$	3,358