XML 103 R88.htm IDEA: XBRL DOCUMENT v3.20.4
Retirement Plans and Post Retirement Benefits Asset Allocation and Fair Value of Plan Assets (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount $ 310 $ 294 $ 275
Target Allocations [Abstract]      
Target Plan Asset Allocation 2018 0.00%    
Defined Benefit Plan, Actual Plan Asset Allocation 1.00% 0.00%  
Quoted Prices in Active Markets for Identical Assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount $ 167 $ 156  
Fair Value Measured at Net Asset Value Per Share [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 115 116  
Fair Value, Inputs, Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 28 22  
Significant Unobservable Inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Domestic stock funds      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 56 54  
Domestic stock funds | Quoted Prices in Active Markets for Identical Assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 56 54  
Domestic stock funds | Fair Value Measured at Net Asset Value Per Share [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Domestic stock funds | Fair Value, Inputs, Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Domestic stock funds | Significant Unobservable Inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
International stock funds      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 46 40  
International stock funds | Quoted Prices in Active Markets for Identical Assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 46 40  
International stock funds | Fair Value Measured at Net Asset Value Per Share [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
International stock funds | Fair Value, Inputs, Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
International stock funds | Significant Unobservable Inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Domestic bond funds      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 94 93  
Domestic bond funds | Quoted Prices in Active Markets for Identical Assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 17 15  
Domestic bond funds | Fair Value Measured at Net Asset Value Per Share [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 77 78  
Domestic bond funds | Fair Value, Inputs, Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Domestic bond funds | Significant Unobservable Inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
International bond funds      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 64 52  
International bond funds | Quoted Prices in Active Markets for Identical Assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
International bond funds | Fair Value Measured at Net Asset Value Per Share [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 38 32  
International bond funds | Fair Value, Inputs, Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 26 20  
International bond funds | Significant Unobservable Inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Multi-strategy Funds      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 48 53  
Multi-strategy Funds | Quoted Prices in Active Markets for Identical Assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 48 47  
Multi-strategy Funds | Fair Value Measured at Net Asset Value Per Share [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 6  
Multi-strategy Funds | Fair Value, Inputs, Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Multi-strategy Funds | Significant Unobservable Inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Cash and Cash Equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 2 2  
Cash and Cash Equivalents | Quoted Prices in Active Markets for Identical Assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Cash and Cash Equivalents | Fair Value Measured at Net Asset Value Per Share [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Cash and Cash Equivalents | Fair Value, Inputs, Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 2 2  
Cash and Cash Equivalents | Significant Unobservable Inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount $ 0 $ 0  
UNITED STATES      
Target Allocations [Abstract]      
Target Plan Asset Allocation 2018 100.00%    
Defined Benefit Plan, Actual Plan Asset Allocation 100.00% 100.00%  
UNITED STATES | Equity Securities      
Target Allocations [Abstract]      
Target Plan Asset Allocation 2018 33.00%    
Defined Benefit Plan, Actual Plan Asset Allocation 41.00% 40.00%  
UNITED STATES | Debt Securities      
Target Allocations [Abstract]      
Target Plan Asset Allocation 2018 50.00%    
Defined Benefit Plan, Actual Plan Asset Allocation 38.00% 40.00%  
UNITED STATES | Multi-strategy Funds      
Target Allocations [Abstract]      
Target Plan Asset Allocation 2018 17.00%    
Defined Benefit Plan, Actual Plan Asset Allocation 20.00% 20.00%  
Non-US      
Target Allocations [Abstract]      
Target Plan Asset Allocation 2018 100.00%    
Defined Benefit Plan, Actual Plan Asset Allocation 100.00% 100.00%  
Non-US | Debt Securities      
Target Allocations [Abstract]      
Target Plan Asset Allocation 2018 40.00%    
Defined Benefit Plan, Actual Plan Asset Allocation 40.00% 90.00%  
Non-US | Cash and Cash Equivalents      
Target Allocations [Abstract]      
Target Plan Asset Allocation 2018 60.00%    
Defined Benefit Plan, Actual Plan Asset Allocation 60.00% 10.00%