15. Debt

The Company’s debt at March 31, 2017 and December 31, 2016 consisted of the following:

	March 31,			December 31,
	2017			2016
Borrowings under the Credit Agreement	$	40.0		$	185.0
11.25% senior notes due February 1, 2019 _(a)		172.2			172.2
7.625% senior notes due June 15, 2020		350.0			350.0
7.875% senior notes due March 15, 2021		448.9			448.8
8.875% debentures due April 15, 2021		80.9			80.9
7.00% senior notes due February 15, 2022		140.0			140.0
6.50% senior notes due November 15, 2023		350.0			350.0
6.00% senior notes due April 1, 2024		400.0			400.0
6.625% debentures due April 15, 2029		199.5			199.5
8.820% debentures due April 15, 2031		69.0			69.0
Other _(b)		12.6			8.5
Unamortized debt issuance costs		(15.8	)		(16.5	)
Total debt		2,247.3			2,387.4
Less: current portion		(12.4	)		(8.2	)
Long-term debt	$	2,234.9		$	2,379.2

(a)	As of March 31, 2017 and December 31, 2016, the interest rate on the 11.25% senior notes due February 1, 2019 was 13.25%, the maximum rate on these notes, as a result of ratings downgrades.

(b)	Includes miscellaneous debt obligations and capital leases.

The fair values of the senior notes and debentures, which were determined using the market approach based upon interest rates available to the Company for borrowings with similar terms and maturities, were determined to be Level 2 under the fair value hierarchy. The fair value of the Company’s debt was greater than its book value by approximately $35.5 million and $4.3 million at March 31, 2017 and December 31, 2016, respectively.

The Company’s $800.0 million senior secured revolving credit facility (the “Credit Agreement”) contains a number of restrictive covenants, including a maximum leverage ratio, as defined in and calculated pursuant to the Credit Agreement, that, in part, restrict the Company’s ability to incur additional indebtedness, create liens, engage in mergers and consolidations, make restricted payments and dispose of certain assets. The Credit Agreement generally allows annual dividend payments of up to $60.0 million in aggregate, though additional dividends may be permitted subject to certain conditions.

The weighted average interest rate on borrowings under the Credit Agreement was 3.5% during the three months ended March 31, 2017. The weighted average interest rate on the borrowing under the prior credit agreement was 2.3% during the three months ended March 31, 2016.

Interest income was $0.9 million for both the three months ended March 31, 2017 and 2016.