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Debt (Tables)
 6 Months Ended
Jun. 30, 2022
Debt Disclosure [Abstract]  
Long-term debt outstanding Long-term debt outstanding was as follows:
 
Weighted
Average
Interest
Rate at
June 30, 2022
June 30, 2022June 30, 2021December 31, 2021
 (In thousands)
Senior Notes due on dates ranging from October 22, 2022 to June 15, 2062
4.29 %$2,365,000 $1,950,000 $2,125,000 
Commercial paper supported by revolving credit agreements1.96 %495,400 297,400 450,300 
Credit agreements due on June 7, 20244.75 %29,860 48,550 127,500 
Medium-Term Notes due on dates ranging from September 15, 2027 to March 16, 2029
7.32 %35,000 35,000 35,000 
Term Loan Agreement due on September 3, 20322.00 %7,700 8,400 7,700 
Other notes due on dates ranging from January 1, 2024 to January 1, 2061
.95 %2,411 3,232 2,564 
Less unamortized debt issuance costs6,809 5,505 6,090 
Less discount595 28 74 
Total long-term debt2,927,967 2,337,049 2,741,900 
Less current maturities214,453 1,549 148,053 
Net long-term debt$2,713,514 $2,335,500 $2,593,847 
Schedule of debt maturities Long-term debt maturities, which excludes unamortized debt issuance costs and discount, at June 30, 2022, were as follows:
Remainder of
2022
2023202420252026Thereafter
(In thousands)
Long-term debt maturities$147,953 $77,923 $586,064 $177,802 $140,802 $1,804,827