XML 136 R121.htm IDEA: XBRL DOCUMENT v3.22.0.1
PENSION AND OTHER POSTRETIREMENT BENEFIT PROGRAMS - Fair Value of Pension Plan Assets and Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets $ 3,784 $ 3,434  
Quoted prices in active markets for identical assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 758 764  
Significant other observable inputs (Level 2)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 1,928 1,933  
Significant unobservable inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 9 11  
Fair Value, Measured at NAV      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 1,089 726  
Cash and cash equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 368 265  
Cash and cash equivalents | Quoted prices in active markets for identical assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 50 91  
Cash and cash equivalents | Significant other observable inputs (Level 2)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 318 174  
Cash and cash equivalents | Significant unobservable inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 0 0  
Cash and cash equivalents | Fair Value, Measured at NAV      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 0 0  
U.S. government and government agency issues      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 271 280  
U.S. government and government agency issues | Quoted prices in active markets for identical assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 0 0  
U.S. government and government agency issues | Significant other observable inputs (Level 2)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 271 280  
U.S. government and government agency issues | Significant unobservable inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 0 0  
U.S. government and government agency issues | Fair Value, Measured at NAV      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 0 0  
Corporate bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 573 744  
Corporate bonds | Quoted prices in active markets for identical assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 0 0  
Corporate bonds | Significant other observable inputs (Level 2)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 573 744  
Corporate bonds | Significant unobservable inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 0 0  
Corporate bonds | Fair Value, Measured at NAV      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 0 0  
Common stock      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 452 453  
Common stock | Quoted prices in active markets for identical assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 452 453  
Common stock | Significant other observable inputs (Level 2)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 0 0  
Common stock | Significant unobservable inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 0 0  
Common stock | Fair Value, Measured at NAV      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 0 0  
Mutual funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 521 510  
Mutual funds | Quoted prices in active markets for identical assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 235 217  
Mutual funds | Significant other observable inputs (Level 2)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 286 293  
Mutual funds | Significant unobservable inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 0 0  
Mutual funds | Fair Value, Measured at NAV      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 0 0  
Common/collective trust funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 1,118 771  
Common/collective trust funds | Quoted prices in active markets for identical assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 0 0  
Common/collective trust funds | Significant other observable inputs (Level 2)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 358 341  
Common/collective trust funds | Significant unobservable inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 0 0  
Common/collective trust funds | Fair Value, Measured at NAV      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 760 430  
Partnership investments      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 329 296  
Partnership investments | Quoted prices in active markets for identical assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 0 0  
Partnership investments | Significant other observable inputs (Level 2)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 0 0  
Partnership investments | Significant unobservable inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 0 0  
Partnership investments | Fair Value, Measured at NAV      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 329 296  
Other holdings      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 152 115  
Other holdings | Quoted prices in active markets for identical assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 21 22  
Other holdings | Significant other observable inputs (Level 2)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 122 82  
Other holdings | Significant unobservable inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 9 11 $ 10
Other holdings | Fair Value, Measured at NAV      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets $ 0 0  
Collateral held on loaned securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets   19  
Collateral held on loaned securities | Quoted prices in active markets for identical assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets   0  
Collateral held on loaned securities | Significant other observable inputs (Level 2)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets   19  
Collateral held on loaned securities | Significant unobservable inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets   0  
Collateral held on loaned securities | Fair Value, Measured at NAV      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets   0  
Collateral to be paid on loaned securities      
Defined Benefit Plan Disclosure [Line Items]      
Collateral to be paid on loaned securities   (19)  
Collateral to be paid on loaned securities | Quoted prices in active markets for identical assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Collateral to be paid on loaned securities   (19)  
Collateral to be paid on loaned securities | Significant other observable inputs (Level 2)      
Defined Benefit Plan Disclosure [Line Items]      
Collateral to be paid on loaned securities   0  
Collateral to be paid on loaned securities | Significant unobservable inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Collateral to be paid on loaned securities   0  
Collateral to be paid on loaned securities | Fair Value, Measured at NAV      
Defined Benefit Plan Disclosure [Line Items]      
Collateral to be paid on loaned securities   $ 0