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Note 19 - Retirement Plans - Fair Value Measurement of Plan Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Major US Plans [Member]        
Fair Value of Plan Assets $ 3,546 $ 3,659    
Major US Plans [Member] | Cash and Cash Equivalents [Member]        
Fair Value of Plan Assets 164 251 [1]    
Major US Plans [Member] | Government Bonds [Member]        
Fair Value of Plan Assets 32 39 [2]    
Major US Plans [Member] | Investment Grade Bonds [Member]        
Fair Value of Plan Assets 682 717 [2]    
Major US Plans [Member] | Real Estate [Member]        
Fair Value of Plan Assets 18 29    
Major US Plans [Member] | Hedge Funds [Member]        
Fair Value of Plan Assets 1,552 1,528    
Major US Plans [Member] | Private Equity Funds [Member]        
Fair Value of Plan Assets 1,097 1,095    
Major US Plans [Member] | Derivatives With Unrealized Gains [Member]        
Fair Value of Plan Assets 1      
Major Non-US Plans [Member]        
Fair Value of Plan Assets 527 526    
Major Non-US Plans [Member] | Cash and Cash Equivalents [Member]        
Fair Value of Plan Assets 13 21    
Major Non-US Plans [Member] | Equity Securities [Member]        
Fair Value of Plan Assets 33 31    
Major Non-US Plans [Member] | Investment Grade Bonds [Member]        
Fair Value of Plan Assets 80 80    
Major Non-US Plans [Member] | Real Estate [Member]        
Fair Value of Plan Assets 11 11    
Major Non-US Plans [Member] | Global High Yield & Emerging Market Debt [Member]        
Fair Value of Plan Assets 2 2    
Major Non-US Plans [Member] | Hedge Funds [Member]        
Fair Value of Plan Assets 29 20    
Major Non-US Plans [Member] | Private Equity Funds [Member]        
Fair Value of Plan Assets 42 43    
Major Non-US Plans [Member] | Insurance Contracts [Member]        
Fair Value of Plan Assets 317 318    
Derivatives With Unrealized Gains [Member] | Insurance Contracts [Member]        
Fair Value of Plan Assets 1      
Fair Value, Inputs, Level 1 [Member] | Major US Plans [Member]        
Fair Value of Plan Assets 165 251    
Fair Value, Inputs, Level 1 [Member] | Major US Plans [Member] | Cash and Cash Equivalents [Member]        
Fair Value of Plan Assets 164 251 [1]    
Fair Value, Inputs, Level 1 [Member] | Major US Plans [Member] | Government Bonds [Member]        
Fair Value of Plan Assets 0 0 [2]    
Fair Value, Inputs, Level 1 [Member] | Major US Plans [Member] | Investment Grade Bonds [Member]        
Fair Value of Plan Assets 0 0 [2]    
Fair Value, Inputs, Level 1 [Member] | Major US Plans [Member] | Real Estate [Member]        
Fair Value of Plan Assets 0 0    
Fair Value, Inputs, Level 1 [Member] | Major US Plans [Member] | Hedge Funds [Member]        
Fair Value of Plan Assets 0 0    
Fair Value, Inputs, Level 1 [Member] | Major US Plans [Member] | Private Equity Funds [Member]        
Fair Value of Plan Assets 0 0    
Fair Value, Inputs, Level 1 [Member] | Major US Plans [Member] | Derivatives With Unrealized Gains [Member]        
Fair Value of Plan Assets 1      
Fair Value, Inputs, Level 1 [Member] | Major Non-US Plans [Member]        
Fair Value of Plan Assets 83 89    
Fair Value, Inputs, Level 1 [Member] | Major Non-US Plans [Member] | Cash and Cash Equivalents [Member]        
Fair Value of Plan Assets 13 21    
Fair Value, Inputs, Level 1 [Member] | Major Non-US Plans [Member] | Equity Securities [Member]        
Fair Value of Plan Assets 33 31    
Fair Value, Inputs, Level 1 [Member] | Major Non-US Plans [Member] | Investment Grade Bonds [Member]        
Fair Value of Plan Assets 35 35    
Fair Value, Inputs, Level 1 [Member] | Major Non-US Plans [Member] | Real Estate [Member]        
Fair Value of Plan Assets 0 0    
Fair Value, Inputs, Level 1 [Member] | Major Non-US Plans [Member] | Global High Yield & Emerging Market Debt [Member]        
Fair Value of Plan Assets 2 2    
Fair Value, Inputs, Level 1 [Member] | Major Non-US Plans [Member] | Hedge Funds [Member]        
Fair Value of Plan Assets 0 0    
Fair Value, Inputs, Level 1 [Member] | Major Non-US Plans [Member] | Private Equity Funds [Member]        
Fair Value of Plan Assets 0 0    
Fair Value, Inputs, Level 1 [Member] | Major Non-US Plans [Member] | Insurance Contracts [Member]        
Fair Value of Plan Assets 0 0    
Fair Value, Inputs, Level 1 [Member] | Derivatives With Unrealized Gains [Member] | Insurance Contracts [Member]        
Fair Value of Plan Assets 1      
Fair Value, Inputs, Level 2 [Member] | Major US Plans [Member]        
Fair Value of Plan Assets 714 756    
Fair Value, Inputs, Level 2 [Member] | Major US Plans [Member] | Cash and Cash Equivalents [Member]        
Fair Value of Plan Assets 0 0 [1]    
Fair Value, Inputs, Level 2 [Member] | Major US Plans [Member] | Government Bonds [Member]        
Fair Value of Plan Assets 32 39 [2]    
Fair Value, Inputs, Level 2 [Member] | Major US Plans [Member] | Investment Grade Bonds [Member]        
Fair Value of Plan Assets 682 717 [2]    
Fair Value, Inputs, Level 2 [Member] | Major US Plans [Member] | Real Estate [Member]        
Fair Value of Plan Assets 0 0    
Fair Value, Inputs, Level 2 [Member] | Major US Plans [Member] | Hedge Funds [Member]        
Fair Value of Plan Assets 0 0    
Fair Value, Inputs, Level 2 [Member] | Major US Plans [Member] | Private Equity Funds [Member]        
Fair Value of Plan Assets 0 0    
Fair Value, Inputs, Level 2 [Member] | Major US Plans [Member] | Derivatives With Unrealized Gains [Member]        
Fair Value of Plan Assets 0      
Fair Value, Inputs, Level 2 [Member] | Major Non-US Plans [Member]        
Fair Value of Plan Assets 75 74    
Fair Value, Inputs, Level 2 [Member] | Major Non-US Plans [Member] | Cash and Cash Equivalents [Member]        
Fair Value of Plan Assets 0 0    
Fair Value, Inputs, Level 2 [Member] | Major Non-US Plans [Member] | Equity Securities [Member]        
Fair Value of Plan Assets 0 0    
Fair Value, Inputs, Level 2 [Member] | Major Non-US Plans [Member] | Investment Grade Bonds [Member]        
Fair Value of Plan Assets 45 45    
Fair Value, Inputs, Level 2 [Member] | Major Non-US Plans [Member] | Real Estate [Member]        
Fair Value of Plan Assets 0 0    
Fair Value, Inputs, Level 2 [Member] | Major Non-US Plans [Member] | Global High Yield & Emerging Market Debt [Member]        
Fair Value of Plan Assets 0 0    
Fair Value, Inputs, Level 2 [Member] | Major Non-US Plans [Member] | Hedge Funds [Member]        
Fair Value of Plan Assets 0 0    
Fair Value, Inputs, Level 2 [Member] | Major Non-US Plans [Member] | Private Equity Funds [Member]        
Fair Value of Plan Assets 0 0    
Fair Value, Inputs, Level 2 [Member] | Major Non-US Plans [Member] | Insurance Contracts [Member]        
Fair Value of Plan Assets 30 29    
Fair Value, Inputs, Level 2 [Member] | Derivatives With Unrealized Gains [Member] | Insurance Contracts [Member]        
Fair Value of Plan Assets 0      
Fair Value, Inputs, Level 3 [Member] | Major US Plans [Member]        
Fair Value of Plan Assets 3 3 $ 0 $ 5
Fair Value, Inputs, Level 3 [Member] | Major US Plans [Member] | Cash and Cash Equivalents [Member]        
Fair Value of Plan Assets 0 0 [1]    
Fair Value, Inputs, Level 3 [Member] | Major US Plans [Member] | Government Bonds [Member]        
Fair Value of Plan Assets 0 0 [2]    
Fair Value, Inputs, Level 3 [Member] | Major US Plans [Member] | Investment Grade Bonds [Member]        
Fair Value of Plan Assets 0 0 [2]    
Fair Value, Inputs, Level 3 [Member] | Major US Plans [Member] | Real Estate [Member]        
Fair Value of Plan Assets 0 0    
Fair Value, Inputs, Level 3 [Member] | Major US Plans [Member] | Hedge Funds [Member]        
Fair Value of Plan Assets 0 0    
Fair Value, Inputs, Level 3 [Member] | Major US Plans [Member] | Private Equity Funds [Member]        
Fair Value of Plan Assets 3 3 0 5
Fair Value, Inputs, Level 3 [Member] | Major US Plans [Member] | Derivatives With Unrealized Gains [Member]        
Fair Value of Plan Assets 0      
Fair Value, Inputs, Level 3 [Member] | Major Non-US Plans [Member]        
Fair Value of Plan Assets 287 289 342 291
Fair Value, Inputs, Level 3 [Member] | Major Non-US Plans [Member] | Cash and Cash Equivalents [Member]        
Fair Value of Plan Assets 0 0    
Fair Value, Inputs, Level 3 [Member] | Major Non-US Plans [Member] | Equity Securities [Member]        
Fair Value of Plan Assets 0 0    
Fair Value, Inputs, Level 3 [Member] | Major Non-US Plans [Member] | Investment Grade Bonds [Member]        
Fair Value of Plan Assets 0 0    
Fair Value, Inputs, Level 3 [Member] | Major Non-US Plans [Member] | Real Estate [Member]        
Fair Value of Plan Assets 0 0    
Fair Value, Inputs, Level 3 [Member] | Major Non-US Plans [Member] | Global High Yield & Emerging Market Debt [Member]        
Fair Value of Plan Assets 0 0    
Fair Value, Inputs, Level 3 [Member] | Major Non-US Plans [Member] | Hedge Funds [Member]        
Fair Value of Plan Assets 0 0    
Fair Value, Inputs, Level 3 [Member] | Major Non-US Plans [Member] | Private Equity Funds [Member]        
Fair Value of Plan Assets 0 0    
Fair Value, Inputs, Level 3 [Member] | Major Non-US Plans [Member] | Insurance Contracts [Member]        
Fair Value of Plan Assets 287 289 $ 342 $ 291
Fair Value, Inputs, Level 3 [Member] | Derivatives With Unrealized Gains [Member] | Insurance Contracts [Member]        
Fair Value of Plan Assets 0      
Fair Value Measured at Net Asset Value Per Share [Member] | Major US Plans [Member]        
Fair Value of Plan Assets 2,664 2,649    
Fair Value Measured at Net Asset Value Per Share [Member] | Major US Plans [Member] | Cash and Cash Equivalents [Member]        
Fair Value of Plan Assets 0 0 [1]    
Fair Value Measured at Net Asset Value Per Share [Member] | Major US Plans [Member] | Government Bonds [Member]        
Fair Value of Plan Assets 0 0 [2]    
Fair Value Measured at Net Asset Value Per Share [Member] | Major US Plans [Member] | Investment Grade Bonds [Member]        
Fair Value of Plan Assets 0 0 [2]    
Fair Value Measured at Net Asset Value Per Share [Member] | Major US Plans [Member] | Real Estate [Member]        
Fair Value of Plan Assets 18 29    
Fair Value Measured at Net Asset Value Per Share [Member] | Major US Plans [Member] | Hedge Funds [Member]        
Fair Value of Plan Assets 1,552 1,528    
Fair Value Measured at Net Asset Value Per Share [Member] | Major US Plans [Member] | Private Equity Funds [Member]        
Fair Value of Plan Assets 1,094 1,092    
Fair Value Measured at Net Asset Value Per Share [Member] | Major US Plans [Member] | Derivatives With Unrealized Gains [Member]        
Fair Value of Plan Assets 0      
Fair Value Measured at Net Asset Value Per Share [Member] | Major Non-US Plans [Member]        
Fair Value of Plan Assets 82 74    
Fair Value Measured at Net Asset Value Per Share [Member] | Major Non-US Plans [Member] | Cash and Cash Equivalents [Member]        
Fair Value of Plan Assets 0 0    
Fair Value Measured at Net Asset Value Per Share [Member] | Major Non-US Plans [Member] | Equity Securities [Member]        
Fair Value of Plan Assets 0 0    
Fair Value Measured at Net Asset Value Per Share [Member] | Major Non-US Plans [Member] | Investment Grade Bonds [Member]        
Fair Value of Plan Assets 0 0    
Fair Value Measured at Net Asset Value Per Share [Member] | Major Non-US Plans [Member] | Real Estate [Member]        
Fair Value of Plan Assets 11 11    
Fair Value Measured at Net Asset Value Per Share [Member] | Major Non-US Plans [Member] | Global High Yield & Emerging Market Debt [Member]        
Fair Value of Plan Assets 0 0    
Fair Value Measured at Net Asset Value Per Share [Member] | Major Non-US Plans [Member] | Hedge Funds [Member]        
Fair Value of Plan Assets 29 20    
Fair Value Measured at Net Asset Value Per Share [Member] | Major Non-US Plans [Member] | Private Equity Funds [Member]        
Fair Value of Plan Assets 42 43    
Fair Value Measured at Net Asset Value Per Share [Member] | Major Non-US Plans [Member] | Insurance Contracts [Member]        
Fair Value of Plan Assets 0 $ 0    
Fair Value Measured at Net Asset Value Per Share [Member] | Derivatives With Unrealized Gains [Member] | Insurance Contracts [Member]        
Fair Value of Plan Assets $ 0      
[1] Cash and cash equivalents are primarily held in short term investment funds and are used for benefit and fee payments, as well as for margin and liquidity requirements associated with the U.S. Plan’s derivative instrument contracts.
[2] Debt securities are traded on an active market and are valued using a market approach based on the closing price on the last business day of the year.