Consolidated Statements of Comprehensive Income (Parentheticals) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Other Comprehensive Income (Loss), Tax	$ 12,084	$ 14,025	$ (5,509)	$ 36,551
Adjustment For Actuarially Determined Liabilities [Member]
Other Comprehensive Income (Loss), Tax	(107,383)	(15,422)	(108,154)	(70,161)
Cash Flow Hedging [Member]
Other Comprehensive Income (Loss), Tax	$ (25,722)	$ (8,536)	$ 13,161	$ (26,036)