Debt

Exchange Offers

In January 2017, we completed exchange offers (the "Exchange Offers") to exchange our outstanding 8.50% senior notes due 2019, 6.875% senior notes due 2020 and 4.70% senior notes due 2021 for 8.00% senior notes due 2024 and cash. The Exchange Offers resulted in the tender of $649.5 million aggregate principal amount of our outstanding notes that were settled and exchanged as follows (in millions):



	Aggregate Principal Amount Purchased		8.00% Senior notes due 2024 Consideration		Cash Consideration⁽¹⁾		Total Consideration
8.50% Senior Notes due 2019	$	145.8	$	81.6	$	81.7	$	163.3
6.875% Senior Notes due 2020	129.8		69.3		69.4		138.7
4.70% Senior Notes due 2021	373.9		181.1		181.4		362.5
Total	$	649.5	$	332.0	$	332.5	$	664.5


⁽¹⁾	As of December 31, 2016, the aggregate amount of principal repurchased with cash of $332.5 million, along with associated premiums, was classified as current maturities of long-term debt on our condensed consolidated balance sheet.

During the first quarter of 2017, we recognized a net pre-tax loss on the Exchange Offers of $6.2 million, consisting of a loss of $3.5 million that includes the write-off of premiums on tendered debt and $2.7 million of transaction costs.

Open Market Repurchases

In March 2017, we repurchased $4.4 million of our 4.70% senior notes due 2021 for $4.2 million of cash on the open market and recognized an insignificant pre-tax gain.

In April 2017, we repurchased $34.8 million of our 8.50% senior notes due 2019, 6.875% senior notes due 2020 and 4.70% senior notes due 2021 for $37.9 million of cash. As of March 31, 2017, the aggregate principal amount, along with associated discounts, premiums and debt issuance costs, was classified as current maturities of long-term debt on our condensed consolidated balance sheet. We expect to recognize an insignificant loss from debt extinguishment during the second quarter.

Maturities

After giving effect to the Exchange Offers and open market repurchases, our next debt maturity is $261.0 million during 2019, followed by $550.1 million, $302.0 million and $1.8 billion during 2020, 2021 and 2024, respectively.

Revolving Credit

We have a $2.25 billion senior unsecured revolving credit facility with a syndicate of banks to be used for general corporate purposes, of which $1.12 billion of availability expires on September 30, 2019 and $1.13 billion expires on September 30, 2020 (the "Credit Facility").

Advances under the Credit Facility bear interest at Base Rate or LIBOR plus an applicable margin rate (currently 0.50% per annum for Base Rate advances and 1.50% per annum for LIBOR advances) depending on our credit rating. Also, our quarterly commitment fee is 0.225% per annum on the undrawn portion of the $2.25 billion commitment, which is also based on our credit rating. Recent credit rating actions have resulted in the highest applicable margin rate on borrowings and our quarterly commitment fee.

The Credit Facility requires us to maintain a total debt to total capitalization ratio that is less than or equal to 60%. The Credit Facility also contains customary restrictive covenants, including, among others, prohibitions on creating, incurring or assuming certain debt and liens; entering into certain merger arrangements; selling, leasing, transferring or otherwise disposing of all or substantially all of our assets; making a material change in the nature of the business; and entering into certain transactions with affiliates. We have the right, subject to receipt of commitments from new or existing lenders, to increase the commitments under the Credit Facility by an amount not exceeding $500 million and to extend the maturity of the commitments under the Credit Facility by one additional year.

As of March 31, 2017, we were in compliance in all material respects with our covenants under the Credit Facility. We had no amounts outstanding under the Credit Facility as of March 31, 2017 and December 31, 2016.

Our access to credit and capital markets depends on the credit ratings assigned to our debt. As a result of recent rating actions, we no longer maintain an investment-grade status. Our current credit ratings, and any additional actual or anticipated downgrades in our credit ratings, could limit our available options when accessing credit and capital markets, or when restructuring or refinancing our debt. In addition, future financings or refinancings may result in higher borrowing costs and require more restrictive terms and covenants, which may further restrict our operations. With a credit rating below investment grade, we have no access to the commercial paper market.