(Stated in millions)

	Sept. 30,		Dec. 31,
	2019		2018
3.30% Senior Notes due 2021	$	1,597	$	1,596
3.65% Senior Notes due 2023		1,494		1,493
3.90% Senior Notes due 2028		1,442		-
4.20% Senior Notes due 2021		1,100		1,100
2.40% Senior Notes due 2022		998		997
4.00% Senior Notes due 2025		929		1,742
4.30% Senior Notes due 2029		845		-
3.75% Senior Notes due 2024		746		-
1.00% Guaranteed Notes due 2026		654		678
2.65% Senior Notes due 2022		598		598
0.00% Notes due 2024		544		-
0.25% Notes due 2027		543		-
0.50% Notes due 2031		536		-
2.20% Senior Notes due 2020		499		499
3.00% Senior Notes due 2020		415		1,596
3.63% Senior Notes due 2022		294		847
7.00% Notes due 2038		209		210
4.50% Notes due 2021		130		132
5.95% Notes due 2041		114		115
3.60% Notes due 2022		108		109
5.13% Notes due 2043		99		99
4.00% Notes due 2023		81		82
3.70% Notes due 2024		55		55
Commercial paper borrowings		2,128		2,433
Other		175		263
	$	16,333	$	14,644

During the third quarter of 2019, Schlumberger issued €500 million of 0.00% Notes due 2024, €500 million of 0.25% Notes due 2027 and €500 million of 0.50% Notes due 2031.

In September 2019, Schlumberger repurchased $783 million of its 3.00% Senior Notes due 2020 and $321 million of its 3.625% Senior Notes due 2022. Schlumberger paid a premium of $29 million in connection with these repurchases. This premium was classified as Impairments & other in the Consolidated Statement of Income (Loss). (See Note 2 - Charges and Credits.)

In April 2019, Schlumberger completed a debt exchange offer, pursuant to which it issued $1.500 billion in principal of 3.90% Senior Notes due 2028 (the “New Notes”) in exchange for $401 million of 3.00% Senior Notes due 2020, $234 million of 3.63% Senior Notes due 2022 and $817 million of 4.00% Senior Notes due 2025. In connection with the exchange of principal, Schlumberger paid a premium of $48 million, substantially all of which was in the form of New Notes. This premium is being amortized as additional interest expense over the term of the New Notes.

The estimated fair value of Schlumberger’s Long-term Debt, based on quoted market prices at September 30, 2019 and December 31, 2018, was $16.9 billion and $14.6 billion, respectively.

At September 30, 2019, Schlumberger had separate committed credit facility agreements aggregating $6.5 billion with commercial banks, of which $4.1 billion was available and unused. These committed facilities support commercial paper programs in the United States and Europe, of which $1.0 billion matures in February 2020, $2.0 billion matures in February 2023, $2.0 billion matures in February 2024 and $1.5 billion matures in July 2024. Interest rates and other terms of borrowing under these lines of credit vary by facility.

Borrowings under Schlumberger’s commercial paper programs at September 30, 2019 were $2.4 billion, of which $0.3 billion was classified in Short-term borrowings and current portion of long-term debt and the remaining $2.1 billion was classified in Long-term Debt in the Consolidated Balance Sheet. At December 31, 2018, borrowings under the commercial paper programs were $2.4 billion, all of which was classified in Long-term debt in the Consolidated Balance Sheet.