Long-term Debt

We have issued various senior notes, all of which rank equally with our existing and future senior unsecured indebtedness, which have semi-annual interest payments and no sinking fund requirements. Our Long-term Debt consisted of the following:



	December 31,
(Dollars in millions)	2016		2015
5.50% Senior Notes due 2016	$	—	$	350
6.35% Senior Notes due 2017	89		604
6.00% Senior Notes due 2018	66		498
9.625% Senior Notes due 2019	489		1,012
5.125% Senior Notes due 2020	363		768
5.875% Exchangeable Senior Notes due 2021	1,147		—
7.75% Senior Notes due 2021	739		—
4.50% Senior Notes due 2022	642		642
8.25% Senior Notes due 2023	738		—
9.875% Senior Notes due 2024	528		—
6.50% Senior Notes due 2036	447		446
6.80% Senior Notes due 2037	255		255
7.00% Senior Notes due 2038	456		455
9.875% Senior Notes due 2039	245		245
6.75% Senior Notes due 2040	456		456
5.95% Senior Notes due 2042	368		368
Secured Term Loan due 2020	420		—
4.82% secured borrowing	5		9
Capital and other lease obligations	120		116
Other	7		29
Total Senior Notes and other debt	7,580		6,253
Less amounts due in one year	177		401
Long-term debt	$	7,403	$	5,852

The accrued interest on our borrowings was $127 million and $115 million at December 31, 2016 and 2015, respectively. The following is a summary of scheduled Long-term Debt maturities by year (dollars in millions):



2017	$	177
2018	137
2019	541
2020	675
2021	1,889
Thereafter	4,161
	$	7,580

Secured Term Loan Agreement

As of the fourth quarter of 2016, our borrowings, net of repayments, under the Term Loan Agreement were $425 million. The interest rate under the Term Loan Agreement is variable and is determined by our leverage ratio as of the most recent fiscal quarter, as either (1) the one-month London Interbank Offered Rate (“LIBOR”) plus a variable margin rate ranging from 1.425% to 3.2% or (2) the alternate base rate plus the applicable margin ranging from 0.425% to 2.2%. For the year ended December 31, 2016, the interest rate for the Term Loan Agreement was LIBOR plus a margin rate of 2.3%. The Term Loan Agreement requires a principal repayment of $12.5 million on the last day of each quarter. In the third and fourth quarters of 2016, we paid down $75 million on our Term Loan Agreement.

Exchangeable Senior Notes, Senior Notes and Tender Offers

We have issued various senior notes, all of which rank equally with our existing and future senior unsecured indebtedness, which have semi-annual interest payments and no sinking fund requirements.

Exchangeable Senior Notes

On June 7, 2016, we issued exchangeable notes with a par value of $1.265 billion and an interest rate of 5.875%. The notes have a conversion price of $7.74 per share and are exchangeable into a total of 163.4 million shares of the Company upon the occurrence of certain events on or after January 1, 2021. The notes mature on July 1, 2021. We have the choice to settle an exchange of the notes in any combination of cash or shares. As of December 31, 2016, the if-converted value did not exceed the principal amount of the notes.

The exchange feature is reported with a carrying amount of $97 million in “Capital in Excess of Par Value” on the accompanying Consolidated Balance Sheets. The debt component of the exchangeable notes has been reported separately in “Long-term Debt” on the accompanying Consolidated Balance Sheets with a carrying value of $1.147 billion at December 31, 2016, net of remaining unamortized discount and debt issuance costs of $118 million. The discount on the debt component is being amortized over the remaining maturity of the exchangeable notes at an effective interest rate of 8.4%. During 2016, interest expense on the notes was $54 million, of which $42 million related to accrued interest and $12 million related to amortization of the discount.

Senior Notes

On November 18, 2016, we issued $540 million in aggregate principal amount of 9.875% notes due 2024. On June 17, 2016, we issued $750 million in aggregate principal amount of 7.75% senior notes due 2021 and $750 million in aggregate principal amount of 8.25% senior notes due 2023.

Tender Offers and Early Retirement of Senior Notes

We commenced a cash tender offer on June 1, 2016 (and amended the offer on June 8, 2016 and June 10, 2016), which included an early tender option with an early settlement date of June 17, 2016 and an expiration date of June 30, 2016 with a final settlement date of July 1, 2016 to repurchase a portion of our 6.35% senior notes due 2017, 6.00% senior notes due 2018, 9.625% senior notes due 2019, and 5.125% senior notes due 2020. On June 17, 2016, we settled the early tender offers in cash in the amount of $1.972 billion, retiring an aggregate face value of senior notes tendered of $1.87 billion and accrued interest of $27 million. We recognized a cumulative loss of $78 million on these transactions in “Bond Tender Premium, Net” on the accompanying Consolidated Statements of Operations. On June 30, 2016, we accepted additional tenders of $2 million of debt, which we settled in cash on July 1, 2016.

In 2015, through a series of open market transactions, we repurchased certain of our 4.50% senior notes, 5.125% senior notes, 5.95% senior notes, 6.50% senior notes, 6.75% senior notes, 6.80% senior notes and 7.00% senior notes with a total book value of $527 million. We recognized a cumulative gain of approximately $84 million on these transactions in the line captioned “Other Income (Expense), Net” on the accompanying Consolidated Statements of Operations.