Debt and Credit Arrangements

Long-Term Debt

A summary of the carrying amounts and fair values of our long-term debt is listed below.



	Effective Interest Rate			June 30, 2011				December 31, 2010
	Effective Interest Rate			Book Value		Fair Value ²		Book Value		Fair Value ²
7.25% Senior Unsecured Notes due 2011	7.25	%	¹	$	36.3	$	36.3	$	36.3	$	37.0
6.25% Senior Unsecured Notes due 2014 (less unamortized discount of $0.3)	6.29	%	¹	355.0		385.9		353.3		378.0
10.00% Senior Unsecured Notes due 2017 (less unamortized discount of $10.0)	10.38	%		590.0		703.5		589.4		705.0
4.75% Convertible Senior Notes due 2023 (plus unamortized premium of $3.8)	3.50	%		203.8		249.1		205.0		235.0
4.25% Convertible Senior Notes due 2023 (plus unamortized premium of $10.2)	0.58	%		410.2		452.5		417.4		444.4
Other notes payable and capitalized leases				21.1				20.8
Total long-term debt				1,616.4				1,622.2
Less: current portion ³				448.6				38.9
Long-term debt, excluding current portion				$	1,167.8			$	1,583.3


1	Excludes the effect of related interest rate swaps.


2	Fair values are derived from trading quotes by institutions making a market in the securities and estimations of value by those institutions using proprietary models.


3	On March 15, 2012, holders of our 4.25% Convertible Senior Notes due 2023 (the “4.25% Notes”) may require us to repurchase their notes for cash at par and as such, we included these notes in the current portion of long-tern debt on our June 30, 2011 unaudited Consolidated Balance Sheet. Any 4.25% Notes not repurchased on March 15, 2012 will be reclassified to long-term debt.

Interest Rate Swaps

In March 2011, we entered into an interest rate swap agreement related to our 6.25% Senior Unsecured Notes due 2014 (the “2014 Notes”) to effectively convert $100.0 notional amount of our $350.0 2014 Notes from fixed rate to floating rate debt. In April 2011, we entered into an additional interest rate swap agreement related to the 2014 Notes to effectively convert an additional $100.0 notional amount of our 2014 Notes from fixed to floating rate debt. In May 2011, we terminated all of the interest rate swaps related to the 2014 Notes, which were settled for a total of $2.7, received in cash, which included accrued and unpaid interest. Upon termination of these swaps, a debt premium equal to the swaps' fair value of $2.3 was recorded as an adjustment to the carrying value of the debt and will be amortized as a reduction to interest expense over the remaining term of the 2014 Notes, resulting in an annual effective interest rate of 5.8%.

Credit Facilities

On May 31, 2011, we entered into an amendment and restatement of our credit agreement originally dated as of July 18, 2008 (the “Credit Agreement”), increasing the commitments of the lenders to $1,000.0 from $650.0, and extending the Credit Agreement's expiration to May 31, 2016. Additionally, the amendments modified our financial covenants, and provided additional flexibility with respect to, or eliminated, certain covenants such as restrictions on acquisitions, capital expenditures and restricted payments. In addition, the cost structure was reduced.

We were in compliance with all of our covenants in the Credit Agreement as of June 30, 2011. The financial covenants in the Credit Agreement require that we maintain, as of the end of each fiscal quarter, certain financial measures for the four quarters then ended. As of June 30, 2011, we had received investment-grade ratings from two of the major credit ratings agencies, and consequently we are not required to satisfy a minimum EBITDA financial covenant and no longer have limitations on restricted payments. The table below sets forth the financial covenants in effect as of June 30, 2011.



	Q2 2011	Q3 2011	Q4 2011 & Thereafter
Interest coverage ratio (not less than): ¹	4.50x	5.00x	5.00x
Leverage ratio (not greater than): ²	3.25x	3.00x	2.75x


1	The interest coverage ratio is defined as EBITDA, as defined in the Credit Agreement, to net interest expense plus cash dividends on convertible preferred stock for the four quarters then ended.


2	The leverage ratio is defined as debt as of the last day of such fiscal quarter to EBITDA, as defined in the Credit Agreement, for the four quarters then ended.

Convertible Senior Notes

The conversion rates of our 4.25% Notes and 4.75% Convertible Senior Notes due 2023 (the "4.75% Notes," and, together with the 4.25% Notes, the "Convertible Notes") are subject to adjustment in specified circumstances, including any payment of cash dividends on our common stock. As of June 30, 2011, the conversion rate for our Convertible Notes has been adjusted from 80.5153 to 81.3289 as a result of the cumulative effect of the cash dividends declared and paid on our common stock during the first half of 2011, resulting in a corresponding adjustment of the conversion price from $12.42 to $12.30. The conversion rate of our 5 1/4% Series B Cumulative Convertible Perpetual Preferred Stock is also subject to adjustment for the payment of cash dividends on our common stock, but has not been adjusted as the applicable threshold for adjustment has not been reached.

Capped Call

In November 2010 we purchased capped call options to hedge the risk of price appreciation on the shares of our common stock into which our 4.75% Notes are convertible. During the second quarter of 2011, the strike price and cap price related to the capped call options were adjusted due to the payment of cash dividends on our common stock. As of June 30, 2011, the options give us the right to purchase up to 16.3 shares of our common stock at a strike price of $12.30 per share (previously $12.42), except that the economic value of the net proceeds of exercising the options will not exceed the difference between the strike price and the adjusted cap price of $18.08 per share (previously $18.26).