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Network
41601 - Disclosure - Other Comprehensive Income (Schedule of Changes in Accumulated Other Comprehensive Income (Loss) by Component) (Details)
(http://chs.net/role/DisclosureOtherComprehensiveIncomeScheduleOfChangesInAccumulatedOtherComprehensiveIncomeLossByComponentDetails)
TableAccumulated Other Comprehensive Income (Loss) [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001108109 (http://www.sec.gov/CIK)
Accumulated Other Comprehensive Income (Loss) [Line Items]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
2014-01-01 - 2014-12-31
Equity Components [Axis]Equity Components [Axis]Equity Components [Axis]
Change in Fair Value of Interest Rate Swaps [Member]Change in Fair Value of Available for Sale Securities [Member]Change in Unrecognized Pension Cost Components [Member]Equity Component [Domain]Change in Fair Value of Interest Rate Swaps [Member]Change in Fair Value of Available for Sale Securities [Member]Change in Unrecognized Pension Cost Components [Member]Equity Component [Domain]Change in Fair Value of Interest Rate Swaps [Member]Change in Fair Value of Available for Sale Securities [Member]Change in Unrecognized Pension Cost Components [Member]Equity Component [Domain]
Accumulated Other Comprehensive Income (Loss), Beginning Balance
(48,000,000) 
1,000,000  
(26,000,000) 
(73,000,000) 
(43,000,000) 
7,000,000  
(27,000,000) 
(63,000,000) 
    
Other comprehensive (loss) income before reclassifications
(17,000,000) 
2,000,000  
1,000,000  
(14,000,000) 
(32,000,000) 
(6,000,000) 
(1,000,000) 
(39,000,000) 
    
Amounts reclassified from accumulated other comprehensive income (loss)
34,000,000  
(13,000,000) 
2,000,000  
23,000,000  
27,000,000  
xsi:nil  
2,000,000  
29,000,000  
    
Other comprehensive income (loss)
17,000,000  
 
(11,000,000) 
 
3,000,000  
 
9,000,000  
 
(5,000,000) 
 
(6,000,000) 
 
1,000,000  
 
(10,000,000) 
 
 
 
 
 
 
 
4,000,000  
 
AOCI distributed to QHC in spin-off
  
2,000,000  
2,000,000  
        
Accumulated Other Comprehensive Income (Loss), Ending Balance
(31,000,000) 
 
(10,000,000) 
 
(21,000,000) 
 
(62,000,000) 
 
(48,000,000) 
 
1,000,000  
 
(26,000,000) 
 
(73,000,000) 
 
(43,000,000) 
 
7,000,000  
 
(27,000,000) 
 
(63,000,000)