(Stated in millions)

	Mar. 31,		Dec. 31,
	2020		2019
3.30% Senior Notes due 2021	$	1,598	$	1,597
3.65% Senior Notes due 2023		1,495		1,495
3.90% Senior Notes due 2028		1,445		1,444
2.40% Senior Notes due 2022		998		998
0.25% Notes due 2027		983		550
0.50% Notes due 2031		972		544
4.00% Senior Notes due 2025		929		929
4.30% Senior Notes due 2029		845		845
3.75% Senior Notes due 2024		746		746
1.00% Guaranteed Notes due 2026		656		665
2.65% Senior Notes due 2022		598		598
0.00% Notes due 2024		548		551
3.63% Senior Notes due 2022		295		294
7.00% Notes due 2038		207		208
5.95% Notes due 2041		114		114
5.13% Notes due 2043		99		99
4.00% Notes due 2023		81		81
3.70% Notes due 2024		55		55
4.20% Senior Notes due 2021		-		600
Commercial paper borrowings		2,745		2,222
Other		-		135
	$	15,409	$	14,770

During the first quarter of 2020, Schlumberger issued €400 million of 0.25% Notes due 2027 and €400 million of 0.50% Notes due 2031.

The estimated fair value of Schlumberger’s Long-term Debt, based on quoted market prices at March 31, 2020 and December 31, 2019, was $15.1 billion and $15.3 billion, respectively.

At March 31, 2020, Schlumberger had separate committed credit facility agreements aggregating $6.25 billion with commercial banks, of which $3.5 billion was available and unused. These committed facilities support commercial paper programs in the United States and Europe, of which $2.75 billion matures in February 2023, $1.5 billion matures in July 2024 and $2.0 billion matures in February 2025. Interest rates and other terms of borrowing under these lines of credit vary by facility.

Subsequent to the end of the first quarter of 2020, Schlumberger entered into a €1.2 billion committed revolving credit facility. This one-year facility can be extended at Schlumberger’s option for up to an additional year. Schlumberger can potentially upsize this facility through syndication. As of April 22, 2020, no amounts have been drawn under this facility.

Borrowings under the commercial paper programs at March 31, 2020 were $2.75 billion, all of which was classified in Long-term debt in the Consolidated Balance Sheet. At December 31, 2019, borrowings under the commercial paper programs were $2.22 billion, all of which was classified in Long-term debt in the Consolidated Balance Sheet.