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Network
2404402 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (AOCI by Components) (Details)
(http://www.cmc.com/role/AccumulatedOtherComprehensiveIncomeLossAociByComponentsDetails)
TableAccumulated Other Comprehensive Income (Loss) [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000022444 (http://www.sec.gov/CIK)
Accumulated Other Comprehensive Income (Loss) [Line Items]Period [Axis]
2015-09-01 - 2016-08-31
2014-09-01 - 2015-08-31
2013-09-01 - 2014-08-31
Equity Components [Axis]Equity Components [Axis]Equity Components [Axis]
Foreign Currency TranslationUnrealized Gain (Loss) on DerivativesDefined Benefit ObligationTotal Accumulated Other Comprehensive Income (Loss)Foreign Currency TranslationUnrealized Gain (Loss) on DerivativesDefined Benefit ObligationTotal Accumulated Other Comprehensive Income (Loss)Foreign Currency TranslationUnrealized Gain (Loss) on DerivativesDefined Benefit ObligationTotal Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
 
 
 
 
 
 
 
 
 
 
 
 
Balance
(113,081,000) 
2,305,000  
(2,759,000) 
(113,535,000) 
(19,891,000) 
3,014,000  
(2,632,000) 
(19,509,000) 
(27,477,000) 
3,594,000  
(3,293,000) 
(27,176,000) 
Other comprehensive income (loss) before reclassifications
(11,771,000) 
1,618,000  
(132,000) 
(10,285,000) 
(83,063,000) 
(2,467,000) 
(169,000) 
(85,699,000) 
7,586,000  
(1,848,000) 
(489,000) 
5,249,000  
Amounts reclassified from AOCI
12,597,000  
(1,737,000) 
46,000  
10,906,000  
(10,127,000) 
1,758,000  
42,000  
(8,327,000) 
0  
1,268,000  
1,150,000  
2,418,000  
Other comprehensive income (loss)
826,000  
 
(119,000) 
 
(86,000) 
 
621,000  
 
(93,190,000) 
 
(709,000) 
 
(127,000) 
 
(94,026,000) 
 
7,586,000  
 
(580,000) 
 
661,000  
 
7,667,000  
 
Balance
(112,255,000) 
 
2,186,000  
 
(2,845,000) 
 
(112,914,000) 
 
(113,081,000) 
 
2,305,000  
 
(2,759,000) 
 
(113,535,000) 
 
(19,891,000) 
 
3,014,000  
 
(2,632,000) 
 
(19,509,000)