Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.

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Goodwill And Acquisition-Related Intangibles, Net - Narrative (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended		12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Mar. 31, 2023
Finite-Lived Intangible Assets
Impairment of intangible assets (excluding goodwill)		$ 0	$ 22	$ 0	$ 40
Forecast
Finite-Lived Intangible Assets
Impairment of intangible assets (excluding goodwill)	$ 70
Operating expenses
Finite-Lived Intangible Assets
Impairment of intangible assets (excluding goodwill)					28
Revenue Cost
Finite-Lived Intangible Assets
Impairment of intangible assets (excluding goodwill)					$ 12
Minimum
Finite-Lived Intangible Assets
Finite-lived intangible asset, useful life		2 years		2 years
Acquired finite-lived intangible assets, weighted average useful life				4 years 3 months 18 days
Maximum
Finite-Lived Intangible Assets
Finite-lived intangible asset, useful life		7 years		7 years
Acquired finite-lived intangible assets, weighted average useful life						4 years 9 months 18 days