XML 102 R54.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Significant Accounting Policies - Schedule of Premium Revenue (Details) - Health Plans - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Schedule of Premium Revenue by Health Plan Type [Line Items] |  |  |
Premium revenue percentage | 100.00% | 100.00% | 100.00%
Medical care costs |  |  |
Schedule of Premium Revenue by Health Plan Type [Line Items] |  |  |
Premium revenue | $ 17,612 | $ 18,854 | $ 16,445
California |  |  |
Schedule of Premium Revenue by Health Plan Type [Line Items] |  |  |
Premium revenue percentage | 12.20% | 14.30% | 14.40%
California | Medical care costs |  |  |
Schedule of Premium Revenue by Health Plan Type [Line Items] |  |  |
Premium revenue | $ 2,150 | $ 2,701 | $ 2,378
Florida |  |  |
Schedule of Premium Revenue by Health Plan Type [Line Items] |  |  |
Premium revenue percentage | 10.20% | 13.60% | 11.80%
Florida | Medical care costs |  |  |
Schedule of Premium Revenue by Health Plan Type [Line Items] |  |  |
Premium revenue | $ 1,790 | $ 2,568 | $ 1,938
Illinois |  |  |
Schedule of Premium Revenue by Health Plan Type [Line Items] |  |  |
Premium revenue percentage | 4.50% | 3.10% | 3.70%
Illinois | Medical care costs |  |  |
Schedule of Premium Revenue by Health Plan Type [Line Items] |  |  |
Premium revenue | $ 793 | $ 593 | $ 603
Michigan |  |  |
Schedule of Premium Revenue by Health Plan Type [Line Items] |  |  |
Premium revenue percentage | 9.10% | 8.50% | 9.30%
Michigan | Medical care costs |  |  |
Schedule of Premium Revenue by Health Plan Type [Line Items] |  |  |
Premium revenue | $ 1,601 | $ 1,596 | $ 1,527
New Mexico |  |  |
Schedule of Premium Revenue by Health Plan Type [Line Items] |  |  |
Premium revenue percentage | 7.70% | 7.30% | 7.90%
New Mexico | Medical care costs |  |  |
Schedule of Premium Revenue by Health Plan Type [Line Items] |  |  |
Premium revenue | $ 1,356 | $ 1,368 | $ 1,305
Ohio |  |  |
Schedule of Premium Revenue by Health Plan Type [Line Items] |  |  |
Premium revenue percentage | 13.60% | 11.80% | 12.00%
Ohio | Medical care costs |  |  |
Schedule of Premium Revenue by Health Plan Type [Line Items] |  |  |
Premium revenue | $ 2,388 | $ 2,216 | $ 1,967
Puerto Rico |  |  |
Schedule of Premium Revenue by Health Plan Type [Line Items] |  |  |
Premium revenue percentage | 3.90% | 3.90% | 4.40%
Puerto Rico | Medical care costs |  |  |
Schedule of Premium Revenue by Health Plan Type [Line Items] |  |  |
Premium revenue | $ 696 | $ 732 | $ 726
South Carolina |  |  |
Schedule of Premium Revenue by Health Plan Type [Line Items] |  |  |
Premium revenue percentage | 2.80% | 2.40% | 2.30%
South Carolina | Medical care costs |  |  |
Schedule of Premium Revenue by Health Plan Type [Line Items] |  |  |
Premium revenue | $ 495 | $ 445 | $ 378
Texas |  |  |
Schedule of Premium Revenue by Health Plan Type [Line Items] |  |  |
Premium revenue percentage | 18.40% | 14.90% | 15.00%
Texas | Medical care costs |  |  |
Schedule of Premium Revenue by Health Plan Type [Line Items] |  |  |
Premium revenue | $ 3,244 | $ 2,813 | $ 2,461
Washington |  |  |
Schedule of Premium Revenue by Health Plan Type [Line Items] |  |  |
Premium revenue percentage | 13.40% | 13.80% | 13.50%
Washington | Medical care costs |  |  |
Schedule of Premium Revenue by Health Plan Type [Line Items] |  |  |
Premium revenue | $ 2,361 | $ 2,608 | $ 2,222
Other |  |  |
Schedule of Premium Revenue by Health Plan Type [Line Items] |  |  |
Premium revenue percentage | 4.20% | 6.40% | 5.70%
Other | Medical care costs |  |  |
Schedule of Premium Revenue by Health Plan Type [Line Items] |  |  |
Premium revenue | $ 738 | $ 1,214 | $ 940

X
- Definition Health Care Organization, Revenue Percentage + References No definition available. + Details
Name: | moh_HealthCareOrganizationRevenuePercentage
Namespace Prefix: | moh_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule of premium revenue by health plan type. + References No definition available. + Details
Name: | moh_ScheduleOfPremiumRevenueByHealthPlanTypeLineItems
Namespace Prefix: | moh_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045 + Details
Name: | us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=moh_HealthPlansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_HealthCarePremiumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_CA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_FL
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_IL
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_MI
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_NM
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_OH
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=country_PR
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_SC
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_TX
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_WA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=moh_OtherHealthPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |