LONG-TERM DEBT

As of December 31, 2017, we had $24.3 billion of unsecured senior notes outstanding (the “Notes”), including $17.0 billion of notes issued and assumed in connection with our August 2017 acquisition of Whole Foods Market. As of December 31, 2016 and 2017, the net unamortized discount on the Notes was $90 million and $99 million. We also have other long-term debt with a carrying amount, including the current portion and borrowings under our credit facility, of $588 million and $692 million as of December 31, 2016 and 2017. The face value of our total long-term debt obligations is as follows (in millions):



	December 31,
	2016			2017
1.200% Notes due on November 29, 2017	$	1,000		$	—
2.600% Notes due on December 5, 2019 (2)	1,000			1,000
1.900% Notes due on August 21, 2020 (3)	—			1,000
3.300% Notes due on December 5, 2021 (2)	1,000			1,000
2.500% Notes due on November 29, 2022 (1)	1,250			1,250
2.400% Notes due on February 22, 2023 (3)	—			1,000
2.800% Notes due on August 22, 2024 (3)	—			2,000
3.800% Notes due on December 5, 2024 (2)	1,250			1,250
5.200% Notes due on December 3, 2025 (4)	—			1,000
3.150% Notes due on August 22, 2027 (3)	—			3,500
4.800% Notes due on December 5, 2034 (2)	1,250			1,250
3.875% Notes due on August 22, 2037 (3)	—			2,750
4.950% Notes due on December 5, 2044 (2)	1,500			1,500
4.050% Notes due on August 22, 2047 (3)	—			3,500
4.250% Notes due on August 22, 2057 (3)	—			2,250
Credit Facility	495			592
Other long-term debt	93			100
Total debt	8,838			24,942
Less current portion of long-term debt	(1,056		)	(100		)
Face value of long-term debt	$	7,782		$	24,842

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(1)	Issued in November 2012, effective interest rate of the 2022 Notes were 2.66%.


(2)	Issued in December 2014, effective interest rates of the 2019, 2021, 2024, 2034, and 2044 Notes were 2.73%, 3.43%, 3.90%, 4.92%, and 5.11%.


(3)	Issued in August 2017, effective interest rates of the 2020, 2023, 2024, 2027, 2037, 2047, and 2057 Notes were 2.16%, 2.56%, 2.95%, 3.25%, 3.94%, 4.13%, and 4.33%.


(4)	Consists of $872 million of 2025 Notes issued in December 2017 in exchange for notes assumed in connection with the acquisition of Whole Foods Market and $128 million of 2025 Notes issued by Whole Foods Market that did not participate in our December 2017 exchange offer. The effective interest rate of the 2025 Notes was 3.02%.

Interest on the Notes issued in 2012 is payable semi-annually in arrears in May and November. Interest on the Notes issued in 2014 is payable semi-annually in arrears in June and December. Interest on the Notes issued in 2017 is payable semi-annually in arrears in February and August. Interest on the 2025 Notes is payable semi-annually in arrears in June and December. We may redeem the Notes at any time in whole, or from time to time, in part at specified redemption prices. We are not subject to any financial covenants under the Notes. The proceeds from the November 2012 and December 2014 Notes were used for general corporate purposes. The proceeds from the August 2017 Notes were used to fund the consideration for the acquisition of Whole Foods Market, to repay the 1.200% Notes due November 2017, and for general corporate purposes. The estimated fair value of the Notes was approximately $8.7 billion and $25.7 billion as of December 31, 2016 and 2017, which is based on quoted prices for our debt as of those dates.

In October 2016, we entered into a $500 million secured revolving credit facility with a lender that is secured by certain seller receivables, which we subsequently increased to $600 million and may from time to time increase in the future subject to lender approval (the “Credit Facility”). The Credit Facility is available for a term of three years, bears interest at the London interbank offered rate (“LIBOR”) plus 1.65%, and has a commitment fee of 0.50% on the undrawn portion. There was $495 million and $592 million of borrowings outstanding under the Credit Facility as of December 31, 2016 and 2017, which had a weighted-average interest rate of 2.3% and 2.7% as of December 31, 2016 and 2017. As of December 31, 2017, we have pledged $686 million of our cash and seller receivables as collateral for debt related to our Credit Facility. The estimated fair value of the Credit Facility, which is based on Level 2 inputs, approximated its carrying value as of December 31, 2016 and 2017.

In December 2017, we conducted an exchange offer related to the $1.0 billion 5.200% senior notes due 2025 assumed in our acquisition of Whole Foods Market. In connection with the exchange offer, we issued $872 million aggregate principal amount of new Amazon 5.200% senior notes due 2025, and $128 million aggregate principal amount of Whole Foods Market’s previously issued notes remained outstanding. We also amended the Whole Foods Market indenture to eliminate substantially all the restrictive covenants and certain events of default from the remaining Whole Foods Market notes.

The other debt, including the current portion, had a weighted-average interest rate of 3.4% and 5.8% as of December 31, 2016 and 2017. We used the net proceeds from the issuance of this debt primarily to fund certain business operations. The estimated fair value of the other long-term debt, which is based on Level 2 inputs, approximated its carrying value as of December 31, 2016 and 2017.

As of December 31, 2017, future principal payments for our total debt were as follows (in millions):



Year Ended December 31,
2018	$	100
2019	1,334
2020	1,258
2021	1,000
2022	1,250
Thereafter	20,000
	$	24,942

In May 2016, we entered into an unsecured revolving credit facility (the “Credit Agreement”) with a syndicate of lenders that provides us with a borrowing capacity of up to $3.0 billion. The Credit Agreement has a term of three years, but it may be extended for up to three additional one-year terms if approved by the lenders. The initial interest rate applicable to outstanding balances under the Credit Agreement is LIBOR plus 0.60%, with a commitment fee of 0.05% on the undrawn portion of the credit facility, under our current credit ratings. If our credit ratings are downgraded these rates could increase to as much as LIBOR plus 1.00% and 0.09%, respectively. There were no borrowings outstanding under the credit agreements as of December 31, 2016 and 2017.