Amount cash consideration payable.

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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 number of businesses acquired by the entity during the period.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Acquisitions & Divestitures - (Details) $ in Millions	12 Months Ended
Acquisitions & Divestitures - (Details) $ in Millions	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($) item	Dec. 31, 2021 USD ($) item	Dec. 31, 2020
2022 Acquisitions
Acquisitions
Number of acquisitions \| item		8
Aggregate acquisitions cost		$ 2,650
Cash consideration payable		$ 238
2022 Acquisitions \| Expected
Acquisitions
Cash to be remitted	$ 139
Acquisitions 2022, 2021, and 2020
Acquisitions
Percentage of business acquired (as a percent)		100.00%	100.00%	100.00%
2021 Acquisitions
Acquisitions
Number of acquisitions \| item			15
Aggregate acquisitions cost			$ 3,341