CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Net income	$ 207		$ 246		$ 401		$ 373
Change in derivatives:
Settlements	15	[1]	(28)	[1]	40	[1]	(75)	[1]
Ineffectiveness		[2]	1	[2]	1	[2]	1	[2]
Change in fair value of derivative instruments	5	[3]	68	[3]	(49)	[3]	22	[3]
Total change in derivatives	20		41		(8)		(52)
Change in value of pension and other postretirement liabilities:
Amortization of prior service cost included in net periodic pension cost							1
Change in currency translation adjustment	3		(1)				(2)
Comprehensive income (loss)	$ 230		$ 286		$ 393		$ 320

[1] Net of $10, ($18), $27 and ($50) million in taxes for the three months ended June 30, 2014 and 2013, and six months ended June 30, 2014 and 2013, respectively.

[2] Net of $0, $1, $1 and $0 million in taxes for the three months ended June 30, 2014 and 2013, and six months ended June 30, 2014 and 2013, respectively

[3] Net of $4, $45, ($32) and $15 million in taxes for the three months ended June 30, 2014 and 2013, and six months ended June 30, 2014 and 2013, respectively