10. Long-term Debt

A summary of Long-term Debt follows:

(Stated in millions)

	Sept. 30,		Dec. 31,
	2016		2015
4.00% Senior Notes due 2025	$	1,740	$	1,741
3.30% Senior Notes due 2021		1,593		1,597
3.00% Senior Notes due 2020		1,591		1,591
3.65% Senior Notes due 2023		1,490		1,496
2.35% Senior Notes due 2018		1,296		1,297
4.20% Senior Notes due 2021		1,100		1,100
2.40% Senior Notes due 2022		996		999
3.63% Senior Notes due 2022		845		845
0.63% Guaranteed Notes due 2019		668		-
1.50% Guaranteed Notes due 2019		579		566
1.90% Senior Notes due 2017		499		499
6.38% Notes due 2018 ⁽¹⁾		301		-
7.00% Notes due 2038 ⁽¹⁾		215		-
4.50% Notes due 2021⁽¹⁾		138		-
5.95% Notes due 2041⁽¹⁾		116		-
3.60% Notes due 2022 ⁽¹⁾		110		-
5.13% Notes due 2043⁽¹⁾		99		-
4.00% Notes due 2023 ⁽¹⁾		83		-
3.70% Notes due 2024⁽¹⁾		56		-
1.25% Senior Notes due 2017		-		1,000
Commercial paper borrowings		2,849		1,000
Other		1,174		711
	$	17,538	$	14,442

⁽¹⁾ Represents long-term fixed rate debt obligations assumed in connection with the acquisition of Cameron, net of amounts repurchased subsequent to the closing of the transaction.

The estimated fair value of Schlumberger’s Long-term Debt at September 30, 2016 and December 31, 2015, based on quoted market prices, was $18.2 billion and $14.4 billion, respectively.

Borrowings under the commercial paper program at September 30, 2016 were $3.0 billion, of which $2.8 billion was classified within Long-term Debt and $0.2 billion was classified within Long-term debt – current portion in the Consolidated Balance Sheet. At December 31, 2015, borrowings under the commercial paper program were $2.4 billion, of which $1.0 billion was classified within Long-term Debt and $1.4 billion was classified within Long-term debt – current portion in the Consolidated Balance Sheet.