XML 66 R61.htm IDEA: XBRL DOCUMENT v3.24.1.u1
Components of Accumulated Other Comprehensive Income (Changes in Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Accumulated Other Comprehensive Income Loss [Line Items]    
Balance, beginning of period $ 2,171,098 $ 2,263,153
Reclassifications from AOCI to earnings:    
Balance, end of period 2,153,272 2,228,263
Pension and Other Postretirement Employee Benefits [Member]    
Accumulated Other Comprehensive Income Loss [Line Items]    
Balance, beginning of period (18,925) (28,494)
Unrecognized gains (losses) arising in AOCI during the period:    
Gross 0 0
Tax effect 0 0
Reclassifications from AOCI to earnings:    
Other [1] (306) (176)
Tax effect 77 45
Net of tax amount (229) (131)
Balance, end of period (19,154) (28,625)
Cash Flow Hedges [Member]    
Accumulated Other Comprehensive Income Loss [Line Items]    
Balance, beginning of period 121,957 126,146
Unrecognized gains (losses) arising in AOCI during the period:    
Gross 21,872 (13,881)
Tax effect (352) 290
Reclassifications from AOCI to earnings:    
Gross [2] (5,719) (3,837)
Tax effect 124 93
Net of tax amount 15,925 (17,335)
Balance, end of period 137,882 108,811
Accumulated Other Comprehensive Income [Member]    
Accumulated Other Comprehensive Income Loss [Line Items]    
Balance, beginning of period 103,032 97,652
Reclassifications from AOCI to earnings:    
Balance, end of period $ 118,728 $ 80,186
[1] Included in the computation of net periodic pension costs.
[2] Included in Interest expense, net on the Condensed Consolidated Statement of Operations.