Accumulated Other Comprehensive Income/(Loss) (Other - Narrative) (Details) - Jun. 30, 2015 - USD ($) $ in Thousands	Total	Total
ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncome [Line Items]
Total employee benefit amounts reclassified from accumulated other comprehensive income/(loss), net		$ 75,120
Minimum
ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncome [Line Items]
Remaining unrecognized loss to be amortized, amortization period		1 year 6 months
Remaining net prior service credit to be amortized, amortization period		1 year 8 months 19 days
Maximum
ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncome [Line Items]
Remaining unrecognized loss to be amortized, amortization period		12 years 1 month 6 days
Remaining net prior service credit to be amortized, amortization period		24 years 10 months 24 days
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Defined Benefit Plans Adjustment
ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncome [Line Items]
Amortization of actuarial loss	$ 34,724	$ 51,615
Amortization of prior service credit	(90,413)	(126,733)
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements	(2)	(2)
Total employee benefit amounts reclassified from accumulated other comprehensive income/(loss)	(55,691)	(75,120)
Tax benefit (b)	0	0
Total employee benefit amounts reclassified from accumulated other comprehensive income/(loss), net	$ (55,691)	$ (75,120)