Goodwill, Other Intangibles and Property and Equipment - Narrative (Details) - USD ($) $ in Billions	Dec. 31, 2023	Dec. 31, 2022
Schedule Of Goodwill, Other Intangible Assets And Property, Plant And Equipment [Line Items]
Indefinite-lived intangible assets	$ 8.5	$ 8.5
Minimum
Schedule Of Goodwill, Other Intangible Assets And Property, Plant And Equipment [Line Items]
Amortization period, other intangible assets	3 years
Maximum
Schedule Of Goodwill, Other Intangible Assets And Property, Plant And Equipment [Line Items]
Amortization period, other intangible assets	30 years
Buildings and Improvements | Minimum
Schedule Of Goodwill, Other Intangible Assets And Property, Plant And Equipment [Line Items]
Estimated useful life, property, plant and equipment	10 years
Buildings and Improvements | Maximum
Schedule Of Goodwill, Other Intangible Assets And Property, Plant And Equipment [Line Items]
Estimated useful life, property, plant and equipment	40 years
Purchased and internally developed software | Minimum
Schedule Of Goodwill, Other Intangible Assets And Property, Plant And Equipment [Line Items]
Estimated useful life, property, plant and equipment	3 years
Purchased and internally developed software | Maximum
Schedule Of Goodwill, Other Intangible Assets And Property, Plant And Equipment [Line Items]
Estimated useful life, property, plant and equipment	5 years
Furniture and Equipment (including Computer Equipment) | Minimum
Schedule Of Goodwill, Other Intangible Assets And Property, Plant And Equipment [Line Items]
Estimated useful life, property, plant and equipment	3 years
Furniture and Equipment (including Computer Equipment) | Maximum
Schedule Of Goodwill, Other Intangible Assets And Property, Plant And Equipment [Line Items]
Estimated useful life, property, plant and equipment	10 years
Leasehold Improvements
Schedule Of Goodwill, Other Intangible Assets And Property, Plant And Equipment [Line Items]
Estimated useful life, leasehold improvements	Useful Life, Shorter of Lease Term or Asset Utility [Member]