v3.26.1
FAIR VALUE MEASUREMENTS - Summary of Assets and Liabilities Recorded at Fair Value (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Assets:    
Available-for-sale debt securities $ 997 $ 3,044
Fair value, recurring    
Assets:    
Total 9,589 11,616
Liabilities:    
Total 710 757
Fair value, recurring | MYR GmbH    
Liabilities:    
Contingent consideration liability 275 278
Level 1 | Fair value, recurring    
Assets:    
Total 8,817 9,741
Liabilities:    
Total 405 406
Level 1 | Fair value, recurring | MYR GmbH    
Liabilities:    
Contingent consideration liability 0 0
Level 2 | Fair value, recurring    
Assets:    
Total 772 1,875
Liabilities:    
Total 30 72
Level 2 | Fair value, recurring | MYR GmbH    
Liabilities:    
Contingent consideration liability 0 0
Level 3 | Fair value, recurring    
Assets:    
Total 0 0
Liabilities:    
Total 275 278
Level 3 | Fair value, recurring | MYR GmbH    
Liabilities:    
Contingent consideration liability 275 278
U.S. treasury securities    
Assets:    
Available-for-sale debt securities 298 1,224
U.S. treasury securities | Fair value, recurring    
Assets:    
Available-for-sale debt securities 298 1,224
U.S. treasury securities | Level 1 | Fair value, recurring    
Assets:    
Available-for-sale debt securities 298 1,224
U.S. treasury securities | Level 2 | Fair value, recurring    
Assets:    
Available-for-sale debt securities 0 0
U.S. treasury securities | Level 3 | Fair value, recurring    
Assets:    
Available-for-sale debt securities 0 0
U.S. government agencies securities    
Assets:    
Available-for-sale debt securities 0 15
U.S. government agencies securities | Fair value, recurring    
Assets:    
Available-for-sale debt securities 0 15
U.S. government agencies securities | Level 1 | Fair value, recurring    
Assets:    
Available-for-sale debt securities 0 0
U.S. government agencies securities | Level 2 | Fair value, recurring    
Assets:    
Available-for-sale debt securities 0 15
U.S. government agencies securities | Level 3 | Fair value, recurring    
Assets:    
Available-for-sale debt securities 0 0
Corporate debt securities    
Assets:    
Available-for-sale debt securities 555 1,398
Corporate debt securities | Fair value, recurring    
Assets:    
Available-for-sale debt securities 555 1,398
Corporate debt securities | Level 1 | Fair value, recurring    
Assets:    
Available-for-sale debt securities 0 0
Corporate debt securities | Level 2 | Fair value, recurring    
Assets:    
Available-for-sale debt securities 555 1,398
Corporate debt securities | Level 3 | Fair value, recurring    
Assets:    
Available-for-sale debt securities 0 0
Residential mortgage and asset-backed securities    
Assets:    
Available-for-sale debt securities 144 407
Residential mortgage and asset-backed securities | Fair value, recurring    
Assets:    
Available-for-sale debt securities 144 407
Residential mortgage and asset-backed securities | Level 1 | Fair value, recurring    
Assets:    
Available-for-sale debt securities 0 0
Residential mortgage and asset-backed securities | Level 2 | Fair value, recurring    
Assets:    
Available-for-sale debt securities 144 407
Residential mortgage and asset-backed securities | Level 3 | Fair value, recurring    
Assets:    
Available-for-sale debt securities 0 0
Money market funds | Fair value, recurring    
Assets:    
Marketable equity securities 5,966 6,150
Money market funds | Level 1 | Fair value, recurring    
Assets:    
Marketable equity securities 5,966 6,150
Money market funds | Level 2 | Fair value, recurring    
Assets:    
Marketable equity securities 0 0
Money market funds | Level 3 | Fair value, recurring    
Assets:    
Marketable equity securities 0 0
Publicly traded equity securities | Fair value, recurring    
Assets:    
Marketable equity securities 2,147 1,961
Publicly traded equity securities | Level 1 | Fair value, recurring    
Assets:    
Marketable equity securities 2,147 1,961
Publicly traded equity securities | Level 2 | Fair value, recurring    
Assets:    
Marketable equity securities 0 0
Publicly traded equity securities | Level 3 | Fair value, recurring    
Assets:    
Marketable equity securities 0 0
Deferred compensation plan | Fair value, recurring    
Assets:    
Marketable equity securities 405 406
Liabilities:    
Deferred compensation plan 405 406
Deferred compensation plan | Level 1 | Fair value, recurring    
Assets:    
Marketable equity securities 405 406
Liabilities:    
Deferred compensation plan 405 406
Deferred compensation plan | Level 2 | Fair value, recurring    
Assets:    
Marketable equity securities 0 0
Liabilities:    
Deferred compensation plan 0 0
Deferred compensation plan | Level 3 | Fair value, recurring    
Assets:    
Marketable equity securities 0 0
Liabilities:    
Deferred compensation plan 0 0
Foreign currency derivative contracts | Fair value, recurring    
Assets:    
Foreign currency derivative contracts 73 56
Liabilities:    
Foreign currency derivative contracts 30 72
Foreign currency derivative contracts | Level 1 | Fair value, recurring    
Assets:    
Foreign currency derivative contracts 0 0
Liabilities:    
Foreign currency derivative contracts 0 0
Foreign currency derivative contracts | Level 2 | Fair value, recurring    
Assets:    
Foreign currency derivative contracts 73 56
Liabilities:    
Foreign currency derivative contracts 30 72
Foreign currency derivative contracts | Level 3 | Fair value, recurring    
Assets:    
Foreign currency derivative contracts 0 0
Liabilities:    
Foreign currency derivative contracts $ 0 $ 0