BASIS OF PRESENTATION AND SIGNIFICANT EVENTS (Details) $ in Billions	Feb. 14, 2017 USD ($)
Settled litigation \| U.S. Department Of Justice vs. Humana and Aetna
Business Acquisition [Line Items]
Break up fee to be received	$ 1

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.

No definition available.

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Balance Type:	na
Period Type:	duration