Amounts related to early debt extinguishment during the three months and six months ended June 30, 2016 and 2015 were as follows:



	Three Months Ended June 30,				Six Months Ended June 30,
In millions	2016		2015		2016		2015
Early debt reductions (a)	$	—	$	1,172	$	—	$	1,389
Pre-tax early debt extinguishment costs	—		207		—		208


(a)	Reductions related to notes with interest rates ranging from 4.70% to 9.38% with original maturities from 2018 to 2030 for the three months ended June 30, 2015 and from 4.70% to 9.38% with original maturities from 2015 to 2030 for the six months ended June 30, 2015.