Financing Arrangements	6 Months Ended
Nov. 30, 2012
Financing Arrangements [Abstract]
Financing Arrangements	(2) Financing Arrangements In September 2012, we filed a shelf registration statement with the SEC that allows us to sell, in one or more future offerings, any combination of our unsecured debt securities and common stock. During the second quarter of 2013, we made principal payments of $116 million related to capital lease obligations. During the first quarter of 2013, we repaid our $300 million 9.65% unsecured notes that matured on June 15, 2012 using cash from operations. In July 2012, we issued $1 billion of senior unsecured debt under a then current shelf registration statement, comprised of $500 million of 2.625% fixed-rate notes due in August 2022 and $500 million of 3.875% fixed-rate notes due in August 2042. Interest on these notes is payable semi-annually. We are utilizing the net proceeds for working capital and general corporate purposes. A $1 billion revolving credit facility is available to finance our operations and other cash flow needs and to provide support for the issuance of commercial paper. The revolving credit agreement expires in April 2016. The agreement contains a financial covenant, which requires us to maintain a leverage ratio of adjusted debt (long-term debt, including the current portion of such debt, plus six times our last four fiscal quarters' rentals and landing fees) to capital (adjusted debt plus total common stockholders' investment) that does not exceed 70%. Our leverage ratio of adjusted debt to capital was 53% at November 30, 2012. We believe the leverage ratio covenant is our only significant restrictive covenant in our revolving credit agreement. Our revolving credit agreement contains other customary covenants that do not, individually or in the aggregate, materially restrict the conduct of our business. We are in compliance with the leverage ratio covenant and all other covenants of our revolving credit agreement and do not expect the covenants to affect our operations, including our liquidity or expected funding needs. As of November 30, 2012, no commercial paper was outstanding, and the entire $1 billion under the revolving credit facility was available for future borrowings. Long-term debt, exclusive of capital leases, had a carrying value of $2.2 billion compared with an estimated fair value of $2.6 billion at November 30, 2012 and $1.5 billion compared with an estimated fair value of $2.0 billion at May 31, 2012. The estimated fair values were determined based on quoted market prices and the current rates offered for debt with similar terms and maturities. The fair value of our long-term debt is classified as Level 2 within the fair value hierarchy. This classification is defined as a fair value determined using market-based inputs other than quoted prices that are observable for the liability, either directly or indirectly.

Financing Arrangements

6 Months Ended

Nov. 30, 2012

(2) Financing Arrangements

In September 2012, we filed a shelf registration statement with the SEC that allows us to sell, in one or more future offerings, any combination of our unsecured debt securities and common stock.

During the second quarter of 2013, we made principal payments of $116 million related to capital lease obligations. During the first quarter of 2013, we repaid our $300 million 9.65% unsecured notes that matured on June 15, 2012 using cash from operations.

In July 2012, we issued $1 billion of senior unsecured debt under a then current shelf registration statement, comprised of $500 million of 2.625% fixed-rate notes due in August 2022 and $500 million of 3.875% fixed-rate notes due in August 2042. Interest on these notes is payable semi-annually. We are utilizing the net proceeds for working capital and general corporate purposes.

A $1 billion revolving credit facility is available to finance our operations and other cash flow needs and to provide support for the issuance of commercial paper. The revolving credit agreement expires in April 2016. The agreement contains a financial covenant, which requires us to maintain a leverage ratio of adjusted debt (long-term debt, including the current portion of such debt, plus six times our last four fiscal quarters' rentals and landing fees) to capital (adjusted debt plus total common stockholders' investment) that does not exceed 70%. Our leverage ratio of adjusted debt to capital was 53% at November 30, 2012. We believe the leverage ratio covenant is our only significant restrictive covenant in our revolving credit agreement. Our revolving credit agreement contains other customary covenants that do not, individually or in the aggregate, materially restrict the conduct of our business. We are in compliance with the leverage ratio covenant and all other covenants of our revolving credit agreement and do not expect the covenants to affect our operations, including our liquidity or expected funding needs. As of November 30, 2012, no commercial paper was outstanding, and the entire $1 billion under the revolving credit facility was available for future borrowings.

Long-term debt, exclusive of capital leases, had a carrying value of $2.2 billion compared with an estimated fair value of $2.6 billion at November 30, 2012 and $1.5 billion compared with an estimated fair value of $2.0 billion at May 31, 2012. The estimated fair values were determined based on quoted market prices and the current rates offered for debt with similar terms and maturities. The fair value of our long-term debt is classified as Level 2 within the fair value hierarchy. This classification is defined as a fair value determined using market-based inputs other than quoted prices that are observable for the liability, either directly or indirectly.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References+ Details