Debt

Our debt consists of the following:



	September 30, 2012						December 31, 2011
	Debt			Interest Rate			Debt			Interest Rate
(millions, except percentages)
Credit Facility, due October 14, 2016 ⁽¹⁾	$	—		—			$	—		—
CONSOL Installment Payments, due September 30, 2012 and 2013	328			1.79	%	⁽²⁾	656			1.76	%	⁽²⁾
FPSO Lease Obligation	322			—			355			—
5¼% Senior Notes, due April 15, 2014	200			5.25	%		200			5.25	%
8¼% Senior Notes, due March 1, 2019	1,000			8.25	%		1,000			8.25	%
4.15% Senior Notes, due December 15, 2021	1,000			4.15	%		1,000			4.15	%
7¼% Senior Notes, due October 15, 2023	100			7.25	%		100			7.25	%
8% Senior Notes, due April 1, 2027	250			8.00	%		250			8.00	%
6% Senior Notes, due March 1, 2041	850			6.00	%		850			6.00	%
7¼% Senior Debentures, due August 1, 2097	84			7.25	%		84			7.25	%
Total	4,134						4,495
Unamortized Discount	(17		)				(26		)
Total Debt, Net of Discount	4,117						4,469
Less Amounts Due Within One Year
Current portion of CONSOL Installment Payment, net of discount	(322		)				(324		)
FPSO Lease Obligation	(48		)				(45		)
Long-Term Debt Due After One Year	$	3,747					$	4,100


⁽¹⁾	Our Credit Agreement provides for a $4.0 billion unsecured revolving Credit Facility. The Credit Facility is available for general corporate purposes.


⁽²⁾	Imputed rate based on the prevailing market rates for similar debt instruments at the date of assessment.

On September 28, 2012 we exercised our option to increase the Credit Facility's overall commitment amount from $3.0 billion to $4.0 billion. Debt issuance costs of approximately $4 million were incurred and are being amortized to expense over the remaining term of the Credit Facility.

See Note 7. Fair Value Measurements and Disclosures for a discussion of methods and assumptions used to estimate the fair values of debt.