	June 30,		December 31,
(In millions)	2011		2010
Short-term:
Commercial paper	$	100	$	100
Current maturities of long-term debt		230		452
Total short-term debt	$	330	$	552
Long-term:
Uncollateralized debt:
5.375% Notes due 2017	$	250	$	250
6.35% Notes due 2018		131		131
8.5% Notes due 2019		251		251
4.375% Notes due 2020		249		249
5.125% Notes due 2020		299		299
4.5% Notes due 2021		298		-
6.37% Notes due 2021		78		78
7.65% Notes due 2023		100		100
8.3% Notes due 2023		17		17
7.875% Debentures due 2027		300		300
8.3% Step Down Notes due 2033		83		83
6.15% Notes due 2036		500		500
5.875% Notes due 2041		298		-
Other		29		30
Total long-term debt	$	2,883	$	2,288

In June 2011, the Company entered into a new five-year revolving credit and letter of credit agreement for $1.5 billion, which permits up to $500 million to be used for letters of credit. This agreement is diversified among 16 banks, with 3 banks each having 12% of the commitment and the other 13 banks having the remaining 64% of the commitment. The credit agreement includes options, which are subject to consent by the administrative agent and the committing banks, to increase the commitment amount to $2.0 billion and to extend the term past June of 2016. The credit agreement is available for general corporate purposes, including commercial paper backstop and the issuance of letters of credit. This agreement includes certain covenants, including a financial covenant requiring the Company to maintain a total debt to adjusted capital ratio at or below 0.50 to 1.00. As of June 30, 2011, the Company had $1.4 billion of borrowing capacity within the maximum debt coverage covenant in the agreement in addition to the $3.2 billion of debt outstanding. There were letters of credit of $118 million issued as of June 30, 2011.

On March 7, 2011, the Company issued $300 million of 10-Year Notes due March 15, 2021 at a stated interest rate of 4.5% ($298 million, net of discount, with an effective interest rate of 4.683% per year) and $300 million of 30-Year Notes due March 15, 2041 at a stated interest rate of 5.875% ($298 million, net of discount, with an effective interest rate of 6.008% per year). Interest is payable on March 15 and September 15 of each year beginning September 15, 2011. The proceeds of this debt will be used for general corporate purposes, including the repayment of debt maturing in 2011.

The Company may redeem these Notes, at any time, in whole or in part, at a redemption price equal to the greater of: