XML 122 R99.htm IDEA: XBRL DOCUMENT v3.25.0.1
Fair Value Of Financial Instruments (Pension Plan Assets Measured At Fair Value On Recurring Basis) (Details) - Pension [Member] - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total investments at fair value $ 2,280 $ 2,150
Interest in Registered Investment Companies   54
Limited Liability Companies 65 81
Interest and Dividend Receivable 2 5
Due from Broker for Securities Sold 14 11
Value of Funds Held in Insurance Co. 4 5
Due to Broker for Securities Purchased (37) (38)
Total Plan Assets, at Fair Value 2,328 2,268
Cash and Cash Equivalents [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total investments at fair value 127 128
U.S. Government Obligations [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total investments at fair value 394 300
Corporate and Other Obligations [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total investments at fair value   160
Common Stock [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total investments at fair value 2 90
Interest in Limited Partnerships and Limited Liability Corporations [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total investments at fair value 161 162
Comingled Funds [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total investments at fair value 1,596 1,310
Fair Value, Inputs, Level 1 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total investments at fair value 129 218
Fair Value, Inputs, Level 1 [Member] | Cash and Cash Equivalents [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total investments at fair value 127 128
Fair Value, Inputs, Level 1 [Member] | Common Stock [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total investments at fair value 2 90
Fair Value, Inputs, Level 2 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total investments at fair value 1,990 1,770
Fair Value, Inputs, Level 2 [Member] | U.S. Government Obligations [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total investments at fair value 394 300
Fair Value, Inputs, Level 2 [Member] | Corporate and Other Obligations [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total investments at fair value   160
Fair Value, Inputs, Level 2 [Member] | Comingled Funds [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total investments at fair value 1,596 1,310
Fair Value, Inputs, Level 3 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total investments at fair value 161 162
Fair Value, Inputs, Level 3 [Member] | Interest in Limited Partnerships and Limited Liability Corporations [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total investments at fair value $ 161 $ 162