Commitments and Contingencies Narrative (Details) $ in Billions	3 Months Ended
Mar. 31, 2022 USD ($)
Contingencies [Line Items]
Other Commitments, Description	As of March 31, 2022, the Company has entered into agreements to acquire companies in the health care sector, most notably Change Healthcare (NASDAQ: CHNG) and LHC Group, Inc. (NASDAQ: LHCG), subject to regulatory approval and other customary closing conditions.
Other Commitment	$ 15

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant