Outstanding Debt

Outstanding debt as of September 30, 2017 consisted of the following (in thousands):



September 30, 2017	Outstanding Principal Amount		Unamortized Debt Discount and Debt Issuance Cost			Carrying Value
Short-term debt:
1.0% Convertible Senior Notes due March 2018	$	910,438	$	(10,636	)	$	899,802
Long-term debt:
0.35% Convertible Senior Notes due June 2020	$	1,000,000	$	(71,257	)	$	928,743
0.9% Convertible Senior Notes due September 2021	1,000,000		(88,664		)	911,336
0.8% (€1 Billion) Senior Notes due March 2022	1,182,200		(6,574		)	1,175,626
2.15% (€750 Million) Senior Notes due November 2022	886,650		(4,885		)	881,765
2.75% Senior Notes due March 2023	500,000		(3,364		)	496,636
2.375% (€1 Billion) Senior Notes due September 2024	1,182,200		(12,544		)	1,169,656
3.65% Senior Notes due March 2025	500,000		(3,400		)	496,600
3.6% Senior Notes due June 2026	1,000,000		(7,035		)	992,965
1.8% (€1 Billion) Senior Notes due March 2027	1,182,200		(5,270		)	1,176,930
3.55% Senior Notes due March 2028	500,000		(3,578		)	496,422
Total long-term debt	$	8,933,250	$	(206,571	)	$	8,726,679

Outstanding debt as of December 31, 2016 consisted of the following (in thousands):



December 31, 2016	Outstanding Principal Amount		Unamortized Debt Discount and Debt Issuance Cost			Carrying Value
Short-term debt:
1.0% Convertible Senior Notes due March 2018	$	1,000,000	$	(32,266	)	$	967,734
Long-term debt:
0.35% Convertible Senior Notes due June 2020	$	1,000,000	$	(90,251	)	$	909,749
0.9% Convertible Senior Notes due September 2021	1,000,000		(104,592		)	895,408
2.15% (€750 Million) Senior Notes due November 2022	791,063		(5,336		)	785,727
2.375% (€1 Billion) Senior Notes due September 2024	1,054,750		(12,861		)	1,041,889
3.65% Senior Notes due March 2025	500,000		(3,727		)	496,273
3.6% Senior Notes due June 2026	1,000,000		(7,619		)	992,381
1.8% (€1 Billion) Senior Notes due March 2027	1,054,750		(5,655		)	1,049,095
Total long-term debt	$	6,400,563	$	(230,041	)	$	6,170,522