CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Net income	$ 211		$ 186		$ 612		$ 559
Change in derivatives:
Settlements	(11)	[1]	(56)	[1]	29	[1]	(131)	[1]
Ineffectiveness	(2)	[2]	1	[2]	(1)	[2]	1	[2]
Change in fair value of derivative instruments	48	[3]	7	[3]	(1)	[3]	30	[3]
Total change in derivatives	35		(48)		27		(100)
Change in value of pension and other postretirement liabilities:
Amortization of prior service cost included in net periodic pension cost							1	[4]
Change in currency translation adjustment	(4)		1		(4)		(2)
Comprehensive income	$ 242		$ 139		$ 635		$ 458

[1] Net of $(7), $(37), $19 and $(87) million in taxes for the three months ended September 30, 2014 and 2013, and nine months ended September 30, 2014 and 2013, respectively.

[2] Net of $(1), $0, $0 and $1 million in taxes for the three months ended September 30, 2014 and 2013, and nine months ended September 30, 2014 and 2013, respectively.

[3] Net of $32, $5, $(1) and $21 million in taxes for the three months ended September 30, 2014 and 2013, and nine months ended September 30, 2014 and 2013, respectively.

[4] Net of $0, $0, $0 and $1 million in taxes for the three months ended September 30, 2014 and 2013, and nine months ended September 30, 2014 and 2013, respectively.