Debt And Lines Of Credit (Tables)

12 Months Ended

Dec. 31, 2021

Debt Instruments [Abstract]

Debt Extinguishment [Table Text Block]

Amounts related to early debt extinguishment during the years ended December 31, 2021, 2020 and 2019 were as follows: 

In millions	2021		2020		2019
Early debt reductions (a)	$	2,472	$	1,640	$	614
Pre-tax early debt extinguishment costs (b)	461		196		21

(a)Reductions related to notes with interest rates ranging from 3.00% to 9.50% with original maturities from 2021 to 2048 for the years ended December 31, 2021, 2020 and 2019.

(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	2021		2020
6.875% notes – due 2023	94		94
7.350% notes – due 2025	44		44
7.750% notes – due 2025	31		31
3.800% notes – due 2026	—		517
7.200% notes – due 2026	58		58
6.400% notes – due 2026	5		5
3.000% notes – due 2027	—		477
7.150% notes – due 2027	7		7
3.550% notes – due 2029	—		200
6.875% notes – due 2029	37		37
5.000% notes – due 2035	407		600
6.650% notes – due 2037	4		4
8.700% notes – due 2038	265		265
7.300% notes – due 2039	722		722
6.000% notes – due 2041	585		585
4.800% notes – due 2044	686		800
5.150% notes – due 2046	449		700
4.400% notes – due 2047	648		1,084
4.350% notes – due 2048	744		938
Floating rate notes – due 2020 – 2024 (a)	222		245
Environmental and industrial development bonds – due 2022 – 2035 (b)	489		579
Total principal	5,497		7,992
Capitalized leases	66		71
Premiums, discounts, and debt issuance costs	(48)		(80)
Terminated interest rate swaps	58		80
Other (c)	6		5
Total (d)	5,579		8,068
Less: current maturities	196		26
Long-term debt	$	5,383	$	8,042

(a)The weighted average interest rate on these notes was 1.4% in 2021 and 1.3% in 2020.

(b)The weighted average interest rate on these bonds was 3.2% in 2021 and 3.5% in 2020.

(c)Includes $1 million and $4 million of fair market value adjustments as of December 31, 2021 and 2020, respectively.

(d)The fair market value was approximately $7.1 billion at December 31, 2021 and $10.5 billion at December 31, 2020.