Debt

Substantially all of our debt is held at the parent, which is reported in the Other segment. The following table summarizes our outstanding debt obligations and their classification in the accompanying consolidated balance sheets:



	March 31, 2018			December 31, 2017
	(In millions)
Current portion of long-term debt:
1.125% Convertible Notes, net of unamortized discount	$	505		$	499
1.625% Convertible Notes, net of unamortized discount	63			157
Lease financing obligations	1			1
Debt issuance costs	(3		)	(4		)
	566			653
Non-current portion of long-term debt:
5.375% Notes	700			700
4.875% Notes	330			330
Credit Facility	300			300
Debt issuance costs	(12		)	(12		)
	1,318			1,318
Lease financing obligations	198			198
	$	2,082		$	2,169

Interest cost recognized relating to our convertible senior notes for the periods presented was as follows:



	Three Months Ended March 31,
	2018		2017
	(In millions)
Contractual interest at coupon rate	$	2	$	3
Amortization of the discount	7		8
	$	9	$	11

Credit Facility

In January 2017, we entered into an amended unsecured $500 million revolving credit facility (Credit Facility). The Credit Facility has a term of five years and all amounts outstanding will be due and payable on January 31, 2022. As of March 31, 2018, $300 million was outstanding under the Credit Facility, and outstanding letters of credit amounting to $6 million reduced our remaining borrowing capacity under the Credit Facility to $194 million.

Borrowings under our Credit Facility bear interest based, at our election, on a base rate or an adjusted London Interbank Offered Rate (LIBOR), plus in each case the applicable margin. In addition to interest payable on the principal amount of indebtedness outstanding from time to time under the Credit Facility, we are required to pay a quarterly commitment fee. The Credit Facility contains customary non-financial and financial covenants, including a net leverage ratio and an interest coverage ratio. As of March 31, 2018, we were in compliance with all financial and non-financial covenants under the Credit Facility and other long-term debt.

Bridge Credit Agreement

In January 2018, we entered into a bridge credit agreement (Bridge Credit Agreement) with several banks. Under the Bridge Credit Agreement, we may borrow up to $550 million to: (i) satisfy conversions of our 1.125% Convertible Notes; (ii) satisfy and/or refinance indebtedness incurred to satisfy conversion of the 1.125% Convertible Notes; (iii) repay or refinance our Credit Facility; and (iv) pay fees and expenses in connection with the foregoing. Subject to the satisfaction of certain conditions, the remaining amount of any borrowing may be used for general corporate purposes.

Borrowings under the Bridge Credit Agreement are reduced by the following:


•	Any future debt and/or equity transactions including term loans, but excluding any Credit Facility drawing (excluding transactions with proceeds used for working capital purposes and acquisition financings up to $300 million); and


•	On August 20, 2018 (the first put date for the 1.625% Convertible Notes), the Bridge Credit Agreement shall permanently be reduced by the greater of $150 million; and the principal amount of the 1.625% Convertible Notes that are exchanged into equity or otherwise defeased on or prior to that date.

The Bridge Credit Agreement matures on January 1, 2019 and, subject to the satisfaction of certain conditions, we may elect to extend twice the initial maturity date by a period of six months each. The amount available for borrowing under the Bridge Credit Agreement at March 31, 2018, was $550 million.

Borrowings under the Bridge Credit Agreement will bear interest based, at our election, at a base rate or an adjusted LIBOR rate, plus in each case the applicable margin. Our wholly owned subsidiaries that guarantee our obligations under the indenture governing the 4.875% Notes, the 5.375% Notes, and the Credit Facility have jointly and severally guaranteed our obligations under the Bridge Credit Agreement.

The Bridge Credit Agreement contains usual and customary (a) affirmative covenants for credit facilities of this type and substantially similar to those contained in the Credit Facility, (b) negative covenants consistent with those contained in the 4.875% Notes and (c) events of default for credit facilities of this type and substantially similar to those contained in the 4.875% Notes.

4.875% Notes due 2025

We have outstanding $330 million aggregate principal amount of senior notes (4.875% Notes) due June 15, 2025, unless earlier redeemed. Interest on the 4.875% Notes is payable semiannually in arrears on June 15 and December 15. Guarantees under the 4.875% Notes mirror those of the Credit Facility. See Note 13, “Supplemental Condensed Consolidating Financial Information,” for more information on the guarantors. The 4.875% Notes contain customary non-financial covenants and change of control provisions.

The 4.875% Notes contain a limitation on the use of proceeds which required us to deposit the net proceeds from their issuance into a segregated deposit account, a current asset reported as “Restricted investments” in our consolidated balance sheets. These funds may be used by us as follows:


•	On or prior to August 20, 2018, to:


◦	Redeem, repurchase, repay, tender for, or acquire for value all or any portion of our 1.625% Convertible Notes, defined and discussed further below, or to satisfy the cash portion of any consideration due upon any conversion of the 1.625% Convertible Notes; and/or


◦	Pay any interest due on all or any portion of the 4.875% Notes.


•	On or after August 20, 2018, to repurchase all or any portion of the 1.625% Convertible Notes that we are obligated to repurchase; and


•	Subsequent to August 20, 2018 (or such earlier date in the event that there are no longer any 1.625% Convertible Notes outstanding), in any other manner not otherwise prohibited in the indenture governing the 4.875% Notes.

The investments that constitute the segregated funds are current assets reported as “Restricted investments” in the accompanying consolidated balance sheets. As a result of the 1.625% Exchange described below, approximately $94 million of such investments were transferred to unrestricted current investments in the first quarter of 2018. As of March 31, 2018, the balance of current restricted investments was $77 million.

5.375% Notes due 2022

We have outstanding $700 million aggregate principal amount of senior notes (5.375% Notes) due November 15, 2022, unless earlier redeemed. Interest on the 5.375% Notes is payable semiannually in arrears on May 15 and November 15. Certain of our wholly owned subsidiaries guarantee our obligations under the 5.375% Notes. Such guarantees mirror those of the Credit Facility. See Note 13, “Supplemental Condensed Consolidating Financial Information,” for more information on the guarantors. The 5.375% Notes contain customary non-financial covenants and change in control provisions.

1.125% Cash Convertible Senior Notes due 2020

We have outstanding $550 million aggregate principal amount of 1.125% cash convertible senior notes due January 15, 2020 (1.125% Convertible Notes), unless earlier repurchased or converted. Interest is payable semiannually in arrears on January 15 and July 15.

The 1.125% Convertible Notes are convertible only into cash, and not into shares of our common stock or any other securities. The initial conversion rate for the 1.125% Convertible Notes is 24.5277 shares of our common stock per $1,000 principal amount, or approximately $40.77 per share of our common stock. Upon conversion, in lieu of receiving shares of our common stock, a holder will receive an amount in cash, per $1,000 principal amount of 1.125% Convertible Notes, equal to the settlement amount, determined in the manner set forth in the indenture. We may not redeem the 1.125% Convertible Notes prior to the maturity date.

The stock price trigger for the 1.125% Convertible Notes is $53.00 per share. The 1.125% Convertible Notes met this trigger in the quarter ended March 31, 2018; therefore, they are convertible into cash and are reported in current portion of long-term debt as of March 31, 2018.

The 1.125% Convertible Notes contain an embedded cash conversion option (the 1.125% Conversion Option), which was separated from the 1.125% Convertible Notes and accounted for separately as a derivative liability, with changes in fair value reported in our consolidated statements of income until the 1.125% Conversion Option settles or expires. The effective interest rate approximating what we would have incurred had nonconvertible debt with otherwise similar terms been issued is approximately 6%. As of March 31, 2018, the 1.125% Convertible Notes had a remaining amortization period of 1.8 years. The 1.125% Convertible Notes’ if-converted value exceeded their principal amount by approximately $527 million and $406 million as of March 31, 2018 and December 31, 2017, respectively.

1.625% Convertible Senior Notes due 2044

In March 2018, we entered into separate, privately negotiated, synthetic exchange agreements (1.625% Exchange) with certain holders of our outstanding 1.625% convertible senior notes due 2044 (1.625% Convertible Notes). In this transaction, we exchanged $97 million aggregate principal amount and accrued interest for 1.8 million shares of our common stock. We recorded a loss on debt extinguishment, including transaction fees, of $10 million, for the transaction, primarily relating to the inducement premium paid to the bondholders, which is recorded in “Other expenses (income), net” in the accompanying consolidated statements of income. We did not receive any proceeds from the 1.625% Exchange.

Following the 1.625% Exchange, we have outstanding $64 million aggregate principal amount of the 1.625% Convertible Notes. The initial conversion rate for the 1.625% Convertible Notes is 17.2157 shares of our common stock per $1,000 principal amount, or approximately $58.09 per share of our common stock. Upon conversion, we will pay cash and, if applicable, deliver shares of our common stock to the converting holder in an amount per $1,000 principal amount of 1.625% Notes equal to the settlement amount (as defined in the related indenture).

The stock price trigger for the 1.625% Convertible Notes is $75.51 per share. The 1.625% Convertible Notes did not meet this stock price trigger in the quarter ended March 31, 2018. However, on contractually specified dates beginning in August 2018, holders of the 1.625% Convertible Notes may require us to repurchase some or all of such notes. In addition, beginning May 15, 2018 until August 19, 2018, holders may convert some or all of the 1.625% Convertible Notes. Because of these put and conversion features, the 1.625% Convertible Notes are reported in current portion of long-term debt as of March 31, 2018. As noted above, because the proceeds from the 4.875% Notes are initially restricted to payments upon conversion or redemption of the 1.625% Convertible Notes, such restricted investments are also classified as current in the accompanying consolidated balance sheets.

The expected life of the 1.625% Convertible Notes is approximately four years, beginning on the issuance date and ending on the first date we may redeem the 1.625% Convertible Notes in August 2018. As of March 31, 2018, the 1.625% Convertible Notes had a remaining amortization period of 0.4 years. The effective interest rate approximating what we would have incurred had nonconvertible debt with otherwise similar terms been issued is approximately 5%. The outstanding 1.625% Convertible Notes’ if-converted value exceeded their principal amount at March 31, 2018 and December 31, 2017 by approximately $19 million and $50 million, respectively. At March 31, 2018 and December 31, 2017, the equity component of the 1.625% Convertible Notes, including the impact of deferred taxes, was $5 million and $12 million, respectively.

Cross-Default Provisions

The indentures governing the 4.875% Notes, the 5.375% Notes, the 1.125% Convertible Notes and the 1.625% Convertible Notes contain cross-default provisions that are triggered upon default by us or any of our subsidiaries on any indebtedness in excess of the amount specified in the applicable indenture.