Debt And Lines Of Credit (Tables)

12 Months Ended

Dec. 31, 2018

Debt Instruments [Abstract]

Debt Extinguishment [Table Text Block]

Amounts related to early debt extinguishment during the years ended December 31, 2018, 2017 and 2016 were as follows:

In millions	2018		2017		2016
Debt reductions (a)	$	780	$	993	$	266
Pre-tax early debt extinguishment costs (b)	10		83		29

(a) Reductions related to notes with interest rates ranging from 1.57% to 9.38% with original maturities from 2018 to 2032 for the years ended December 31, 2018, 2017 and 2016.

(b) Amounts are included in Restructuring and other charges in the accompanying consolidated statements of operations.

Summary Of Long-Term Debt [Table Text Block]

A summary of long-term debt follows:

In millions at December 31	2018		2017
8.7% note – due 2038	$	264	$	264
7.5% note – due 2021	406		409
7.3% note – due 2039	721		721
6 7/8% notes – due 2023 – 2029	131		131
6.65% note – due 2037	4		4
6.4% to 7.75% debentures due 2025 – 2027	144		143
6.0% note – due 2041	585		585
5.00% to 5.15% notes – due 2035 – 2046	1,288		1,281
4.8% note – due 2044	799		796
4.75% note – due 2022	355		817
3.00% to 4.40% notes – due 2024 – 2048	4,481		4,775
Floating rate notes – due 2018 – 2023 (a)	908		650
Environmental and industrial development bonds – due 2018 – 2035 (b)	566		585
Other (c)	2		(4		)
Total (d)	10,654		11,157
Less: current maturities	639		311
Long-term debt	$	10,015	$	10,846

(a) The weighted average interest rate on these notes was 3.5% in 2018 and 2.6% in 2017.

(b) The weighted average interest rate on these bonds was 5.5% in 2018 and 6.0% in 2017.

(c) Includes $60 million and $70 million of debt issuance costs as of December 31, 2018 and 2017, respectively.

(d) The fair market value was approximately $10.6 billion at December 31, 2018 and $12.3 billion at December 31, 2017.