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Intangible Assets (Tables)
 3 Months Ended
Mar. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of intangible assets by class
Identifiable intangible assets consisted of the following:
(In millions)Gross
Carrying
Amount		Accumulated
Amortization		Net Book
Value
March 31, 2024
Customer relationships$14,593 $7,846 $6,747 
Acquired software and technology2,121 1,180 941 
Trade names639 370 269 
Purchased software1,078 482 596 
Capitalized software and other intangibles3,544 1,171 2,373 
Total$21,975 $11,049 $10,926 
December 31, 2023
Customer relationships$14,669 $7,594 $7,075 
Acquired software and technology2,148 1,148 1,000 
Trade names641 356 285 
Purchased software1,087 520 567 
Capitalized software and other intangibles3,356 1,073 2,283 
Total$21,901 $10,691 $11,210