Debt

6 Months Ended

Jun. 30, 2011

Debt [Abstract]

Debt

8. Debt

Total debt, including the current portion of long-term debt, consisted of the following:

	As of		As of
	June 30,		December 31,
(millions)	2011		2010
6.3% senior notes due 2016	$	500	$	500
7.75% senior notes due 2018, net of discount		499		499
8.375% senior notes due 2018		350		350
9.75% senior notes due 2014, net of discount		296		296
10% convertible senior notes due 2018, net of discount		382		382
Ship mortgage facility (includes $7 million of current portion of long-term debt)		40		42
Industrial revenue bonds (due 2028 through 2034)		239		239
Total	$	2,306	$	2,308

CREDIT FACILITY

Our credit facility allows for revolving loans and letters of credit (up to $250 million) in an aggregate principal amount not to exceed the lesser of (a) $400 million or (b) a borrowing base determined by reference to the trade receivables and inventory of USG and its significant domestic subsidiaries. The maximum allowable borrowings may be increased at our request with the agreement of the lenders providing increased or new lending commitments, provided that the maximum allowable borrowings after giving effect to the increase may not exceed $600 million. The credit facility is guaranteed by our significant domestic subsidiaries and secured by their and USG’s trade receivables and inventory. It is available to fund working capital needs and for other general corporate purposes.

     Borrowings under the credit facility bear interest at a floating rate based on an alternate base rate or, at our option, at adjusted LIBOR plus 3.00%. We are also required to pay annual facility fees of 0.75% on the entire facility, whether drawn or undrawn, and fees on outstanding letters of credit. We have the ability to repay amounts outstanding under the credit agreement at any time without prepayment premium or penalty. The credit facility matures on December 21, 2015 unless terminated earlier in accordance with its terms, including if by May 2, 2014 our 9.75% senior notes due in 2014 are not repaid, their payment is not provided for or their maturity has not been extended until at least 2016 unless we then have liquidity of at least $500 million.

     The credit agreement contains a single financial covenant that would require us to maintain a minimum fixed charge coverage ratio of 1.1-to-1.0 if and for so long as the excess of the borrowing base over the outstanding borrowings under the credit agreement is less than the greater of (a) $40 million and (b) 15% of the lesser of (i) the aggregate revolving commitments at such time and (ii) the borrowing base at such time. As of June 30, 2011, our fixed charge coverage ratio was (0.19)-to-1. Because we do not currently satisfy the required fixed charge coverage ratio, we must maintain borrowing availability of at least $44 million under the credit facility. The credit agreement contains other covenants and events of default that are customary for similar agreements and may limit our ability to take various actions.

     Taking into account the most recent borrowing base calculation delivered under the credit facility, which reflects trade receivables and inventory as of June 30, 2011, outstanding letters of credit and the current borrowing availability requirement of $44 million, borrowings available under the credit facility were approximately $167 million. As of June 30, 2011 and during the quarter then-ended, there were no borrowings under the facility. Had there been any borrowings as of that date, the applicable interest rate would have been 3.2%. Outstanding letters of credit totaled $80 million as of June 30, 2011.

SENIOR NOTES

We have $300 million in aggregate principal amount of 9.75% senior notes due 2014 that are recorded on the condensed consolidated balance sheets at $296 million as of June 30, 2011 and December 31, 2010, net of debt discount of $4 million. Our obligations under the notes are guaranteed on a senior unsecured basis by certain of our domestic subsidiaries.

     We have $350 million in aggregate principal amount of 8.375% senior notes due 2018. Our obligations under these notes are guaranteed on a senior unsecured basis by the same domestic subsidiaries that have guaranteed the 9.75% senior notes.

     We have $500 million of 7.75% senior notes due 2018 that are recorded on the condensed consolidated balance sheets at $499 million, net of debt discount of $1 million. The interest rate payable on these notes is subject to adjustment from time to time by up to 2% in the aggregate if the debt ratings assigned to the notes are upgraded or thereafter downgraded. At our current credit ratings, the interest rate on these notes is at the maximum level of 9.75%.

     We also have $500 million of 6.3% senior notes due 2016. The 9.75% senior notes, 8.375% senior notes, 7.75% senior notes and 6.3% senior notes are senior unsecured obligations and rank equally with all of our other existing and future unsecured senior indebtedness. The indentures governing the notes contain events of default, covenants and restrictions that are customary for similar transactions, including a limitation on our ability and the ability of certain of our subsidiaries to create or incur secured indebtedness.

     The 9.75% and 8.375% senior notes contain a provision requiring us to offer to purchase those notes at a premium of 101% of their principal amount (plus accrued and unpaid interest) in the event of a change in control. The 7.75% and 6.3% senior notes contain a provision requiring us to offer to purchase those notes at a premium of 101% of their principal amount (plus accrued and unpaid interest) in the event of a change in control and a related downgrade of the rating on the notes to below investment grade by both Moody’s Investors Service and Standard & Poor’s Financial Services LLC.

     The 9.75%, 7.75% and 6.3% senior notes contain a provision that allows us to redeem the notes in whole at any time, or in part from time to time, at our option, at a redemption price equal to the greater of (1) 100% of the principal amount of the notes being redeemed and (2) the sum of the present value of the remaining scheduled payments of principal and interest on the notes being redeemed discounted to the redemption date on a semi-annual basis at the applicable U.S. Treasury rate plus a spread (as outlined in the respective indentures), plus, in each case, any accrued and unpaid interest on the principal amount being redeemed to the redemption date. The 8.375% senior notes contain a similar provision that allows us to redeem those notes, in whole or in part from time to time, at our option, beginning on October 15, 2014 at stated redemption prices, plus any accrued and unpaid interest. In addition, we may redeem the 8.375% senior notes in whole or in part from time to time, at our option, prior to October 15, 2014 at a redemption price equal to 100% of the principal amount of the notes redeemed plus a premium (as specified in the supplemental indenture with respect to those notes), plus any accrued and unpaid interest.

CONVERTIBLE SENIOR NOTES

We have $400 million aggregate principal amount of 10% convertible senior notes due 2018 that are recorded on the condensed consolidated balance sheets at $382 million as of June 30, 2011 and December 31, 2010, net of debt discount of $18 million as a result of an embedded derivative. The notes bear cash interest at the rate of 10% per year until maturity, redemption or conversion. The notes are initially convertible into 87.7193 shares of our common stock per $1,000 principal amount of notes which is equivalent to an initial conversion price of $11.40 per share, or a total of 35.1 million shares. The notes contain anti-dilution provisions that are customary for convertible notes issued in transactions similar to that in which the notes were issued. The notes mature on December 1, 2018 and are not callable until December 1, 2013, after which we may elect to redeem all or part of the notes at stated redemption prices, plus accrued and unpaid interest.

     The notes are senior unsecured obligations and rank equally with all of our other existing and future unsecured senior indebtedness. The indenture governing the notes contains events of default, covenants and restrictions that are customary for similar transactions, including a limitation on our ability and the ability of certain of our subsidiaries to create or incur secured indebtedness. The notes also contain a provision requiring us to offer to purchase the notes at a premium of 105% of their principal amount (plus accrued and unpaid interest) in the event of a change in control or the termination of trading of our common stock on a national securities exchange.

SHIP MORTGAGE FACILITY

Our subsidiary, Gypsum Transportation Limited, or GTL, has a secured loan facility agreement with DVB Bank SE, as lender, agent and security trustee. Both advances provided for under the secured loan facility have been drawn, and the total outstanding loan balances under the facility were $40 million as of June 30, 2011 and $42 million as of December 31, 2010. Of the total amounts outstanding as of June 30, 2011 and December 31, 2010, $7 million was classified as current portion of long-term debt on our condensed consolidated balance sheets.

     The loan balance under the secured loan facility bears interest at a floating rate based on LIBOR plus a margin of 1.65%. The interest rate was 2.09% as of June 30, 2011. Each advance is repayable in quarterly installments in amounts determined in accordance with the secured loan facility agreement, with the balance of each advance repayable eight years after the date it was advanced, or October 31, 2016 and May 22, 2017. The secured loan facility agreement contains affirmative and negative covenants affecting GTL and certain customary events of default. GTL has granted DVB Bank SE a security interest in the Gypsum Centennial and Gypsum Integrity ships and related insurance, contract, account and other rights as security for borrowings under the secured loan facility. USG Corporation has guaranteed the obligations of GTL under the secured loan facility and has agreed to maintain liquidity of at least $175 million.

CGC CREDIT FACILITY

Our Canadian subsidiary, CGC Inc., or CGC, has a Can. $30 million credit agreement with The Toronto-Dominion Bank. The credit agreement allows for revolving loans and letters of credit (up to Can. $3 million in aggregate) in an aggregate principal amount not to exceed Can. $30 million. The credit agreement is available for the general corporate purposes of CGC, excluding hostile acquisitions. The credit agreement is secured by a general security interest in substantially all of CGC’s assets other than intellectual property.

     Revolving loans under the agreement may be made in Canadian dollars or U.S. dollars. Revolving loans made in Canadian dollars bear interest at a floating rate based on the prime rate plus 1.50% or the Bankers’ Acceptance Discount Rate plus 3.00%, at the option of CGC. Revolving loans made in U.S. dollars bear interest at a floating rate based upon a base rate plus 1.50% or the LIBOR rate plus 3.00%, at the option of CGC. CGC may prepay the revolving loans at its discretion without premium or penalty and may be required to repay revolving loans under certain circumstances. The credit agreement matures on June 1, 2012, unless terminated earlier in accordance with its terms. The credit agreement contains customary representations and warranties, affirmative and negative covenants that may limit CGC’s ability to take certain actions and events of default. Borrowings under the credit agreement are subject to acceleration upon the occurrence of an event of default.

     As of June 30, 2011 and during the quarter then ended, there were no borrowings outstanding under this credit agreement. Had there been any borrowings as of that date, the applicable interest rate would have been 4.3%. As of June 30, 2011, outstanding letters of credit totaled Can. $0.4 million. The U.S. dollar equivalent of borrowings available under this agreement as of June 30, 2011 was $31 million.

INDUSTRIAL REVENUE BONDS

Our $239 million of industrial revenue bonds have fixed interest rates ranging from 5.5% to 6.4%. The weighted average rate of interest on our industrial revenue bonds is 5.875%. These bonds mature during the years 2028 through 2034.

OTHER INFORMATION

The fair value of our debt was $2.504 billion as of June 30, 2011 and $2.564 billion as of December 31, 2010. The fair value was based on quoted market prices of our debt or, where quoted market prices were not available, on quoted market prices of instruments with similar terms and maturities or internal valuation models. Interest accrued on our debt as of June 30, 2011 and December 31, 2010 was $52 million and $49 million, respectively.

     As of June 30, 2011, we were in compliance with the covenants contained in our credit facilities.