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Debt and Credit Agreements (Tables)
3 Months Ended
Mar. 31, 2022
Debt Disclosure [Abstract]  
Schedule of debt and credit agreement components
The Company’s debt and credit agreements consisted of the following:
(In millions)March 31,
2022
December 31,
2021
Total debt
6.51% weighted-average private placement senior notes
$37 $37 
5.58% weighted-average private placement senior notes (1)
87 87 
3.65% weighted-average private placement senior notes
825 825 
4.375% senior notes due June 1, 2024
750 750 
3.90% senior notes due May 15, 2027
750 750 
4.375% senior notes due March 15, 2029
500 500 
Revolving credit facility— — 
Net premium (discount)175 185 
Unamortized debt issuance costs(9)(9)
$3,115 $3,125 
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(1) Includes $25 million of current portion of long-term debt at March 31, 2022 due in January 2023.