Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Net income		$ 207,070	$ 183,636
Other comprehensive income:
Net loss on cash flow hedges(1)	[1]	(12,478)	(15,465)
Reclassification of net loss on cash flow hedges to income(1)	[1]	388	200
Amortization of prior service credit(2)	[2]	(973)	(928)
Amortization of actuarial loss(2)	[2]	1,401	1,572
Total other comprehensive loss		(11,662)	(14,621)
Comprehensive income		$ 195,408	$ 169,015

[1] See Note 8–Derivative Financial Instruments for details of the amount of gain/loss recognized in accumulated other comprehensive loss (“AOCL”) for derivative financial instruments and the amount of gain/loss reclassified from AOCL into income.

[2] See Note 6–Employee Benefit Plans for details of the changes in employee benefit plan assets and benefit obligations recognized in AOCL.