Number of contracts.

No definition available.

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- Definition

Represents the percentage of total membership represented by a group.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

The number of days required for a customer to have the right to terminate a contract for cause.

+ References

No definition available.

+ Details

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- Definition

Represents the number of days required for a customer to have the right to terminate a contract without cause after January 1, 2014.

+ References

No definition available.

+ Details

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- Definition

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.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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General - Customers Exceeding Ten Percent of Consolidated Net Revenues (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) contract	Sep. 30, 2017 USD ($)
Operating results by business segment
Revenues	$ 1,853,506	$ 1,419,406	$ 5,469,506	$ 4,144,168
Florida Contract
Operating results by business segment
Termination notice			1 day
Termination notice period without cause			30 days
Revenues			$ 482,400	457,700
Regions 2, 6, 9, 10 and 11
Operating results by business segment
Percentage of total current membership under the existing Florida Contract	60.00%		60.00%
Healthcare \| Customer A
Operating results by business segment
Revenues			$ 534,483	131,539
Healthcare \| Customer B
Operating results by business segment
Revenues			$ 506,204
Healthcare \| Customer B \| Minimum
Operating results by business segment
Number of contracts \| contract			1
Pharmacy Management \| Customer C
Operating results by business segment
Revenues			$ 259,514	$ 266,795