v3.26.1
Employee Benefit Plans - Defined Benefit Plans Assets Measured at Fair Value (Details) - Pension Plan - USD ($)
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount $ 6,433,000,000 $ 5,627,000,000  
Assets Measured at NAV | Common Collective Trust      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Investment within plan asset category, amount   $ 116,000,000  
Fixed Income Securities | Assets Measured at NAV | Common Collective Trust      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined benefit plan, plan assets, allocation (percentage)   70.00%  
Equity Securities | Assets Measured at NAV | Common Collective Trust      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined benefit plan, plan assets, allocation (percentage)   30.00%  
U.S.      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount $ 1,845,000,000 $ 1,407,000,000 $ 1,528,000,000
Defined benefit plan, plan assets, allocation (percentage) 100.00% 100.00%  
U.S. | Cash and cash equivalents      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount $ 4,000,000 $ 1,000,000  
U.S. | U.S      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 148,000,000 72,000,000  
U.S. | International      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 280,000,000 197,000,000  
U.S. | U.S. treasury securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 153,000,000 67,000,000  
U.S. | Debt security issued by government agency      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 163,000,000 139,000,000  
U.S. | Corporate bonds      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 739,000,000 599,000,000  
U.S. | Asset backed securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0    
U.S. | Derivatives      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 2,000,000 (30,000,000)  
U.S. | Real estate      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount $ 55,000,000 $ 35,000,000  
Defined benefit plan, plan assets, allocation (percentage) 6.00% 4.00%  
U.S. | Private equity/venture capital      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount $ 158,000,000 $ 167,000,000  
Defined benefit plan, plan assets, allocation (percentage) 5.00% 7.00%  
U.S. | Guaranteed insurance contracts      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount $ 0 $ 0  
U.S. | Other      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount $ 143,000,000 $ 160,000,000  
Defined benefit plan, plan assets, allocation (percentage) 3.00% 2.00%  
U.S. | Level 1      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount $ 177,000,000 $ 142,000,000  
U.S. | Level 1 | Cash and cash equivalents      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 4,000,000 1,000,000  
U.S. | Level 1 | U.S      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 74,000,000 72,000,000  
U.S. | Level 1 | International      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 99,000,000 72,000,000  
U.S. | Level 1 | U.S. treasury securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
U.S. | Level 1 | Debt security issued by government agency      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
U.S. | Level 1 | Corporate bonds      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
U.S. | Level 1 | Asset backed securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0    
U.S. | Level 1 | Derivatives      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
U.S. | Level 1 | Real estate      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
U.S. | Level 1 | Private equity/venture capital      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
U.S. | Level 1 | Guaranteed insurance contracts      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
U.S. | Level 1 | Other      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 (3,000,000)  
U.S. | Level 1 | Other Liabilities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Plan liabilities , non-financial, amount 0 (3,000,000)  
U.S. | Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 873,000,000 775,000,000  
U.S. | Level 2 | Cash and cash equivalents      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
U.S. | Level 2 | U.S      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
U.S. | Level 2 | International      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
U.S. | Level 2 | U.S. treasury securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 84,000,000 67,000,000  
U.S. | Level 2 | Debt security issued by government agency      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 163,000,000 139,000,000  
U.S. | Level 2 | Corporate bonds      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 623,000,000 599,000,000  
U.S. | Level 2 | Asset backed securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0    
U.S. | Level 2 | Derivatives      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 2,000,000 (30,000,000)  
U.S. | Level 2 | Real estate      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
U.S. | Level 2 | Private equity/venture capital      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
U.S. | Level 2 | Guaranteed insurance contracts      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
U.S. | Level 2 | Other      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 1,000,000 0  
U.S. | Level 3      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 23,000,000 24,000,000  
U.S. | Level 3 | Cash and cash equivalents      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
U.S. | Level 3 | U.S      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
U.S. | Level 3 | International      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
U.S. | Level 3 | U.S. treasury securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
U.S. | Level 3 | Debt security issued by government agency      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
U.S. | Level 3 | Corporate bonds      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
U.S. | Level 3 | Asset backed securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0    
U.S. | Level 3 | Derivatives      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
U.S. | Level 3 | Real estate      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 23,000,000 24,000,000 47,000,000
U.S. | Level 3 | Private equity/venture capital      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
U.S. | Level 3 | Guaranteed insurance contracts      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
U.S. | Level 3 | Other      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
U.S. | Assets Measured at NAV      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 772,000,000 466,000,000  
U.S. | Assets Measured at NAV | Cash and cash equivalents      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
U.S. | Assets Measured at NAV | U.S      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 74,000,000 0  
U.S. | Assets Measured at NAV | International      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 181,000,000 125,000,000  
U.S. | Assets Measured at NAV | U.S. treasury securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 69,000,000 0  
U.S. | Assets Measured at NAV | Debt security issued by government agency      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
U.S. | Assets Measured at NAV | Corporate bonds      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 116,000,000 0  
U.S. | Assets Measured at NAV | Asset backed securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0    
U.S. | Assets Measured at NAV | Derivatives      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
U.S. | Assets Measured at NAV | Real estate      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 32,000,000 11,000,000  
U.S. | Assets Measured at NAV | Private equity/venture capital      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 158,000,000 167,000,000  
U.S. | Assets Measured at NAV | Guaranteed insurance contracts      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
U.S. | Assets Measured at NAV | Other      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 142,000,000 163,000,000  
U.S. | Assets Measured at NAV | Common Collective Trust      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Investment within plan asset category, amount $ 104,000,000    
U.S. | Fixed Income Securities | Assets Measured at NAV | Common Collective Trust      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined benefit plan, plan assets, allocation (percentage) 30.00%    
U.S. | Equity Securities | Assets Measured at NAV | Common Collective Trust      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined benefit plan, plan assets, allocation (percentage) 70.00%    
Non-U.S.      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount $ 4,588,000,000 $ 4,220,000,000 4,662,000,000
Defined benefit plan, plan assets, allocation (percentage) 100.00% 100.00%  
Non-U.S. | Cash and cash equivalents      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount $ 445,000,000 $ 246,000,000  
Non-U.S. | U.S      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 31,000,000 34,000,000  
Non-U.S. | International      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 411,000,000 332,000,000  
Non-U.S. | U.S. treasury securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 2,000,000 2,000,000  
Non-U.S. | Debt security issued by government agency      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 663,000,000 670,000,000  
Non-U.S. | Corporate bonds      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 266,000,000 236,000,000  
Non-U.S. | Asset backed securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 4,000,000    
Non-U.S. | Derivatives      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount (11,000,000) 13,000,000  
Non-U.S. | Real estate      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount $ 114,000,000 $ 118,000,000  
Defined benefit plan, plan assets, allocation (percentage) 3.00% 3.00%  
Non-U.S. | Private equity/venture capital      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount $ 45,000,000 $ 258,000,000  
Defined benefit plan, plan assets, allocation (percentage) 1.00% 7.00%  
Non-U.S. | Guaranteed insurance contracts      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount $ 2,498,000,000 $ 2,184,000,000  
Non-U.S. | Other      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount $ 120,000,000 $ 127,000,000  
Defined benefit plan, plan assets, allocation (percentage) 66.00% 59.00%  
Non-U.S. | Level 1      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount $ 857,000,000 $ 626,000,000  
Non-U.S. | Level 1 | Cash and cash equivalents      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 445,000,000 246,000,000  
Non-U.S. | Level 1 | U.S      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 12,000,000 15,000,000  
Non-U.S. | Level 1 | International      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 372,000,000 314,000,000  
Non-U.S. | Level 1 | U.S. treasury securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
Non-U.S. | Level 1 | Debt security issued by government agency      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
Non-U.S. | Level 1 | Corporate bonds      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
Non-U.S. | Level 1 | Asset backed securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0    
Non-U.S. | Level 1 | Derivatives      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
Non-U.S. | Level 1 | Real estate      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
Non-U.S. | Level 1 | Private equity/venture capital      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
Non-U.S. | Level 1 | Guaranteed insurance contracts      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
Non-U.S. | Level 1 | Other      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 28,000,000 51,000,000  
Plan assets, non-financial, amount 28,000,000 51,000,000  
Non-U.S. | Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 967,000,000 952,000,000  
Non-U.S. | Level 2 | Cash and cash equivalents      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
Non-U.S. | Level 2 | U.S      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 19,000,000 19,000,000  
Non-U.S. | Level 2 | International      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 18,000,000 0  
Non-U.S. | Level 2 | U.S. treasury securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 2,000,000 2,000,000  
Non-U.S. | Level 2 | Debt security issued by government agency      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 661,000,000 670,000,000  
Non-U.S. | Level 2 | Corporate bonds      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 266,000,000 236,000,000  
Non-U.S. | Level 2 | Asset backed securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 4,000,000    
Non-U.S. | Level 2 | Derivatives      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount (11,000,000) 13,000,000  
Non-U.S. | Level 2 | Real estate      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
Non-U.S. | Level 2 | Private equity/venture capital      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 3,000,000 0  
Non-U.S. | Level 2 | Guaranteed insurance contracts      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
Non-U.S. | Level 2 | Other      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 5,000,000 12,000,000  
Non-U.S. | Level 3      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 2,568,000,000 2,271,000,000 2,591,000,000
Non-U.S. | Level 3 | Cash and cash equivalents      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
Non-U.S. | Level 3 | U.S      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
Non-U.S. | Level 3 | International      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
Non-U.S. | Level 3 | U.S. treasury securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
Non-U.S. | Level 3 | Debt security issued by government agency      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
Non-U.S. | Level 3 | Corporate bonds      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
Non-U.S. | Level 3 | Asset backed securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0    
Non-U.S. | Level 3 | Derivatives      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
Non-U.S. | Level 3 | Real estate      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 70,000,000 87,000,000 106,000,000
Non-U.S. | Level 3 | Private equity/venture capital      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0 4,000,000
Non-U.S. | Level 3 | Guaranteed insurance contracts      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 2,498,000,000 2,184,000,000 $ 2,481,000,000
Non-U.S. | Level 3 | Other      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
Non-U.S. | Assets Measured at NAV      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 196,000,000 371,000,000  
Non-U.S. | Assets Measured at NAV | Cash and cash equivalents      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
Non-U.S. | Assets Measured at NAV | U.S      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
Non-U.S. | Assets Measured at NAV | International      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 21,000,000 18,000,000  
Non-U.S. | Assets Measured at NAV | U.S. treasury securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
Non-U.S. | Assets Measured at NAV | Debt security issued by government agency      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 2,000,000 0  
Non-U.S. | Assets Measured at NAV | Corporate bonds      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
Non-U.S. | Assets Measured at NAV | Asset backed securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0    
Non-U.S. | Assets Measured at NAV | Derivatives      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
Non-U.S. | Assets Measured at NAV | Real estate      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 44,000,000 31,000,000  
Non-U.S. | Assets Measured at NAV | Private equity/venture capital      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 42,000,000 258,000,000  
Non-U.S. | Assets Measured at NAV | Guaranteed insurance contracts      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 0 0  
Non-U.S. | Assets Measured at NAV | Other      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total plan assets, amount 87,000,000 64,000,000  
Non-U.S. | Assets Measured at NAV | Mortgage Funds      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Investment within plan asset category, amount $ 87,000,000 $ 64,000,000