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166 - Disclosure - Income Taxes - Summary of Activity of Company Total Amounts of Unrecognized Tax Benefits (Detail)
(http://www.iasishealthcare.com/taxonomy/role/DisclosureIncomeTaxesSummaryOfActivityOfCompanyTotalAmountsOfUnrecognizedTaxBenefits)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001294632 (http://www.sec.gov/CIK)
Income Tax Disclosure [Abstract]Period [Axis]
2015-10-01 - 2016-09-30
2014-10-01 - 2015-09-30
2013-10-01 - 2014-09-30
Income Tax Disclosure [Abstract]
 
 
 
Unrecognized tax benefits, beginning balance
14,249,000  
19,207,000  
19,570,000  
Additions resulting from tax positions taken in a prior period
  
811,000  
Reductions resulting from tax positions taken in a prior period
(1,203,000) 
(4,979,000) 
(2,241,000) 
Additions resulting from tax positions taken in the current period
161,000  
21,000  
1,265,000  
Reductions resulting from lapse of statute of limitations
  
(198,000) 
Unrecognized tax benefits, ending balance
13,207,000  
 
14,249,000  
 
19,207,000