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Contingencies (Health Care Cost Recovery Litigation) (Details) | 1 Months Ended | 3 Months Ended |  |
--- | --- | --- | --- | ---
Nov. 30, 1998 USD ($) state | Mar. 31, 2017 USD ($) case | Mar. 31, 2016 USD ($) | Apr. 25, 2016 case | Apr. 20, 2015 case
Loss Contingencies [Line Items] |  |  |  |  |
Litigation settlement, amount | $ |  |  | $ 1,200,000,000 |  |
Health Care Cost Recovery Actions [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Number of cases pending |  |  |  | 1 | 1
Number of states with settled litigation | state | 46 |  |  |  |
State Settlement Agreements annual payments | $ | $ 9,400,000,000 |  |  |  |
State Settlement Agreements attorney fees annual cap | $ | $ 500,000,000 |  |  |  |
Litigation settlement, amount | $ |  | $ 1,100,000,000 |  |  |
NEW YORK [Member] | Health Care Cost Recovery Actions, Medicare as Secondary Payer Case [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Number of claims dismissed |  | 2 |  |  |
Florida [Member] | Health Care Cost Recovery Actions, Medicare as Secondary Payer Case [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Number of claims dismissed |  | 2 |  |  |
Massachusetts [Member] | Health Care Cost Recovery Actions, Medicare as Secondary Payer Case [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Number of claims dismissed |  | 1 |  |  |
Canada [Member] | Threatened Litigation [Member] | Health Care Cost Recovery Actions [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Number of cases pending |  | 10 |  |  |

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- Definition Litigation Settlement, Annual Legal Fees Payable, Maximum + References No definition available. + Details
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- Definition Litigation Settlement, Annual Payment Amount + 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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- Definition Number of pending claims pertaining to a loss contingency. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 + Details
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