Health Care Organization, Number of Members

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- Definition

Health Care Organization, Premium Revenue, Average Monthly

+ References

No definition available.

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- Definition

Operating Lease, Number of Renewal Option

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- Definition

Period for health and welfare benefits under employment agreements for termination without cause.

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- Definition

Related Party Transaction, Extension Term

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- Definition

Related Party Transaction, Terms

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- Definition

Sale Leaseback Transaction, Lease Renewal Term

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- Definition

Sale Leaseback Transaction, Term of Lease

+ References

No definition available.

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- Definition

Amount of restricted net assets of consolidated and unconsolidated subsidiaries as of the end of the most recently completed fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e)(3)(ii))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

Amount of insurance premium revenue recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(e))
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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- Definition

Term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

The amount of loss pertaining to the specified contingency that was charged against earnings in the period, including the effects of revisions in previously reported estimates.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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- Definition

The estimated maximum amount of possible loss from the contingency.

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-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
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- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717

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- Definition

The current cash, cash equivalents and investments that are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. Includes current cash equivalents and investments that are similarly restricted as to withdrawal, usage or disposal.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.1)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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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.

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- Definition

The amount of statutory capital and surplus (stockholders' equity) as of the balance sheet date using prescribed or permitted statutory accounting practices (rather than GAAP, if different) of the state or country.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.23(c))
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 24
-Subparagraph c
-Article 7

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Amount of statutory capital required to be maintained as of the balance sheet date under prescribed or permitted statutory accounting practices.

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-Name Accounting Standards Codification
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Commitments and Contingencies (Details) member in Thousands, $ in Millions	3 Months Ended									6 Months Ended		12 Months Ended
	Jun. 30, 2016 USD ($)	Dec. 31, 2015 USD ($) member Lease_Renewal_Option	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Mar. 31, 2014 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Dec. 31, 2015 USD ($) member Lease_Renewal_Option	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2009
Sale Leaseback Transaction [Line Items]
Rental expense related to leases												$ 44	$ 32	$ 25
Premium revenue	$ 4,029	$ 3,589	$ 3,377	$ 3,304	$ 2,971	$ 2,599	$ 2,317	$ 2,167	$ 1,940	$ 8,024	$ 6,275	13,241	9,023	$ 6,179
Net assets of subsidiaries subject to restrictions	1,299	1,229				859				1,299		1,229	859
Aggregate statutory capital and surplus	1,384	1,350								1,384		1,350
Required minimum statutory capital surplus	854	776								854		776
Parent Company
Sale Leaseback Transaction [Line Items]
Restricted cash and investments	$ 466	$ 612				$ 203				$ 466		$ 612	203
Executive Officer \| Employment Contracts
Sale Leaseback Transaction [Line Items]
Automatically extension term															1 year
Period of employment agreements														1 year	1 year
Minimum
Sale Leaseback Transaction [Line Items]
Operating lease terms												5 years
Operating lease renewal options \| Lease_Renewal_Option		1										1
Minimum \| Executive Officer \| Employment Contracts
Sale Leaseback Transaction [Line Items]
Employment agreements terms															1 year
Maximum
Sale Leaseback Transaction [Line Items]
Operating lease terms												10 years
Operating lease renewal options \| Lease_Renewal_Option		2										2
Maximum \| Executive Officer \| Employment Contracts
Sale Leaseback Transaction [Line Items]
Employment agreements terms															3 years
June 2013 Transactions
Sale Leaseback Transaction [Line Items]
Sale leaseback lease term														25 years
June 2013 Transactions \| Minimum
Sale Leaseback Transaction [Line Items]
Sale leaseback lease term												16 years 6 months
Lease renewal terms												10 years
June 2013 Transactions \| Maximum
Sale Leaseback Transaction [Line Items]
Sale leaseback lease term												25 years
Lease renewal terms												25 years
Termination of hospital management agreement
Sale Leaseback Transaction [Line Items]
Settlement charge		$ 15
Illinois
Sale Leaseback Transaction [Line Items]
Number of members served, approximately (in member) \| member		98										98
Premium revenue												$ 397	153	$ 8
Puerto Rico
Sale Leaseback Transaction [Line Items]
Number of members served, approximately (in member) \| member		348										348
Premium revenue		$ 192										$ 567	$ 0	$ 0
Approximate premium revenue, monthly												64
Puerto Rico \| Collectibility of premium receivables
Sale Leaseback Transaction [Line Items]
Premium revenue being withheld by Commonwealth		$ 12										$ 12