v2.4.1.9
SHARE-BASED COMPENSATION (Details 4) (USD $)
In Millions, except Share data, unless otherwise specified
1 Months Ended 12 Months Ended 1 Months Ended
May 31, 2014
installment
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
May 31, 2012
May 31, 2013
installment
Aggregate Intrinsic Value            
Number of installments that PRSUs will vest in 3axll_VestingNumberOfInstallments          
Positive adjusted EBITDA for prescribed performance period            
Aggregate Intrinsic Value            
Number of installments that PRSUs will vest in 3axll_VestingNumberOfInstallments
/ axll_PerformanceCriteriaAxis
= axll_PositiveAdjustedEbitdaForPrescribedPerformancePeriodMember
         
Restricted and deferred stock units            
Shares            
Outstanding at the beginning of the period (in shares)   1,009,303us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= axll_RestrictedAndDeferredStockUnitsMember
       
Granted (in shares)   447,608us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= axll_RestrictedAndDeferredStockUnitsMember
450,169us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= axll_RestrictedAndDeferredStockUnitsMember
409,351us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= axll_RestrictedAndDeferredStockUnitsMember
   
Vested and released (in shares)   (421,347)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_AwardTypeAxis
= axll_RestrictedAndDeferredStockUnitsMember
       
Forfeited (in shares)   (62,721)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
/ us-gaap_AwardTypeAxis
= axll_RestrictedAndDeferredStockUnitsMember
       
Outstanding at the end of the period (in shares)   972,843us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= axll_RestrictedAndDeferredStockUnitsMember
1,009,303us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= axll_RestrictedAndDeferredStockUnitsMember
     
Vested or expected to vest at the end of the period (in shares)   927,467axll_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExpectedToVestOutstandingNumber
/ us-gaap_AwardTypeAxis
= axll_RestrictedAndDeferredStockUnitsMember
       
Weighted Average Remaining Contractual Terms            
Outstanding at the end of the period   1 year 1 month 6 days        
Vested or expected to vest at the end of the period   1 year 1 month 6 days        
Weighted Average Grant Date Fair Value            
Outstanding at the beginning of the period (in dollars per share)   $ 35.68us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= axll_RestrictedAndDeferredStockUnitsMember
       
Granted (in dollars per share)   $ 44.38us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= axll_RestrictedAndDeferredStockUnitsMember
$ 45.20us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= axll_RestrictedAndDeferredStockUnitsMember
$ 30.18us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= axll_RestrictedAndDeferredStockUnitsMember
   
Vested and released (in dollars per share)   $ 32.32us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= axll_RestrictedAndDeferredStockUnitsMember
       
Forfeited (in dollars per share)   $ 41.64us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= axll_RestrictedAndDeferredStockUnitsMember
       
Outstanding at the end of the period (in dollars per share)   $ 41.30us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= axll_RestrictedAndDeferredStockUnitsMember
$ 35.68us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= axll_RestrictedAndDeferredStockUnitsMember
     
Vested or expected to vest at the end of the period (in dollars per share)   $ 41.21axll_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExpectedToVestOutstandingWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= axll_RestrictedAndDeferredStockUnitsMember
       
Aggregate Intrinsic Value            
Outstanding at the end of the period (in dollars)   $ 40.2axll_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValue
/ us-gaap_AwardTypeAxis
= axll_RestrictedAndDeferredStockUnitsMember
       
Vested or expected to vest at the end of the period (in dollars)   39.4axll_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExpectedToVestOutstandingIntrinsicValue
/ us-gaap_AwardTypeAxis
= axll_RestrictedAndDeferredStockUnitsMember
       
Total intrinsic value of share awards vested (in dollars)   $ 19.5axll_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalIntrinsicValue
/ us-gaap_AwardTypeAxis
= axll_RestrictedAndDeferredStockUnitsMember
$ 6.1axll_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalIntrinsicValue
/ us-gaap_AwardTypeAxis
= axll_RestrictedAndDeferredStockUnitsMember
$ 15.8axll_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalIntrinsicValue
/ us-gaap_AwardTypeAxis
= axll_RestrictedAndDeferredStockUnitsMember
   
Restricted stock surrendered in satisfaction of required minimum tax withholding obligations (in shares)   163,404us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation
/ us-gaap_AwardTypeAxis
= axll_RestrictedAndDeferredStockUnitsMember
36,846us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation
/ us-gaap_AwardTypeAxis
= axll_RestrictedAndDeferredStockUnitsMember
152,759us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation
/ us-gaap_AwardTypeAxis
= axll_RestrictedAndDeferredStockUnitsMember
   
Restricted and deferred stock units | Minimum            
Aggregate Intrinsic Value            
Vesting period   1 year        
Restricted and deferred stock units | Maximum            
Aggregate Intrinsic Value            
Vesting period   3 years        
PRSUs            
Weighted average assumptions used in the Monte Carlo simulation model            
Risk-free interest rate (as a percent)   0.79%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= axll_PerformanceBasedRestrictedStockUnitsMember
  0.44%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= axll_PerformanceBasedRestrictedStockUnitsMember
   
Expected life   3 years   3 years    
Expected volatility (as a percent)   43.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= axll_PerformanceBasedRestrictedStockUnitsMember
  45.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= axll_PerformanceBasedRestrictedStockUnitsMember
   
Expected dividend yield (as a percent)   1.07%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
/ us-gaap_AwardTypeAxis
= axll_PerformanceBasedRestrictedStockUnitsMember
  1.07%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
/ us-gaap_AwardTypeAxis
= axll_PerformanceBasedRestrictedStockUnitsMember
   
PRSUs | Stock price performance measured against specified performance targets | Minimum            
Aggregate Intrinsic Value            
Percentage multiplied to target award for determining the number of shares subject to award         0.00%axll_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPercentageMultipliedToTargetAwardForDeterminingNumberOfSharesSubjectToAward
/ us-gaap_AwardTypeAxis
= axll_PerformanceBasedRestrictedStockUnitsMember
/ axll_PerformanceCriteriaAxis
= axll_StockPricePerformanceMeasuredAgainstSpecifiedPerformanceTargetsMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
 
PRSUs | Stock price performance measured against specified performance targets | Maximum            
Aggregate Intrinsic Value            
Percentage multiplied to target award for determining the number of shares subject to award         150.00%axll_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPercentageMultipliedToTargetAwardForDeterminingNumberOfSharesSubjectToAward
/ us-gaap_AwardTypeAxis
= axll_PerformanceBasedRestrictedStockUnitsMember
/ axll_PerformanceCriteriaAxis
= axll_StockPricePerformanceMeasuredAgainstSpecifiedPerformanceTargetsMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
 
PRSUs | Contingent on achievement of certain synergies relating to the Merger            
Aggregate Intrinsic Value            
Percentage of PRSUs vesting on second anniversary           50.00%axll_PercentageVestingOnSecondAnniversary
/ us-gaap_AwardTypeAxis
= axll_PerformanceBasedRestrictedStockUnitsMember
/ axll_PerformanceCriteriaAxis
= axll_ContingentOnAchievementOfCertainSynergiesRelatingToMergerMember
Percentage of PRSUs vesting on third anniversary           50.00%axll_PercentageVestingOnThirdAnniversary
/ us-gaap_AwardTypeAxis
= axll_PerformanceBasedRestrictedStockUnitsMember
/ axll_PerformanceCriteriaAxis
= axll_ContingentOnAchievementOfCertainSynergiesRelatingToMergerMember
Number of installments that PRSUs will vest in           3axll_VestingNumberOfInstallments
/ us-gaap_AwardTypeAxis
= axll_PerformanceBasedRestrictedStockUnitsMember
/ axll_PerformanceCriteriaAxis
= axll_ContingentOnAchievementOfCertainSynergiesRelatingToMergerMember
PRSUs | Contingent on achievement of certain synergies relating to the Merger | Minimum            
Aggregate Intrinsic Value            
Percentage multiplied to target award for determining the number of shares subject to award           0.00%axll_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPercentageMultipliedToTargetAwardForDeterminingNumberOfSharesSubjectToAward
/ us-gaap_AwardTypeAxis
= axll_PerformanceBasedRestrictedStockUnitsMember
/ axll_PerformanceCriteriaAxis
= axll_ContingentOnAchievementOfCertainSynergiesRelatingToMergerMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
PRSUs | Contingent on achievement of certain synergies relating to the Merger | Maximum            
Aggregate Intrinsic Value            
Percentage multiplied to target award for determining the number of shares subject to award           200.00%axll_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPercentageMultipliedToTargetAwardForDeterminingNumberOfSharesSubjectToAward
/ us-gaap_AwardTypeAxis
= axll_PerformanceBasedRestrictedStockUnitsMember
/ axll_PerformanceCriteriaAxis
= axll_ContingentOnAchievementOfCertainSynergiesRelatingToMergerMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
PRSUs | Company relative total shareholder return as compared to peer companies            
Aggregate Intrinsic Value            
Percentage of PRSUs vesting on third anniversary 100.00%axll_PercentageVestingOnThirdAnniversary
/ us-gaap_AwardTypeAxis
= axll_PerformanceBasedRestrictedStockUnitsMember
/ axll_PerformanceCriteriaAxis
= axll_CompanyRelativeTotalShareholderReturnAsComparedToPeerCompaniesMember
         
PRSUs | Company relative total shareholder return as compared to peer companies | Minimum            
Aggregate Intrinsic Value            
Percentage multiplied to target award for determining the number of shares subject to award 0.00%axll_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPercentageMultipliedToTargetAwardForDeterminingNumberOfSharesSubjectToAward
/ us-gaap_AwardTypeAxis
= axll_PerformanceBasedRestrictedStockUnitsMember
/ axll_PerformanceCriteriaAxis
= axll_CompanyRelativeTotalShareholderReturnAsComparedToPeerCompaniesMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
         
PRSUs | Company relative total shareholder return as compared to peer companies | Maximum            
Aggregate Intrinsic Value            
Percentage multiplied to target award for determining the number of shares subject to award 200.00%axll_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPercentageMultipliedToTargetAwardForDeterminingNumberOfSharesSubjectToAward
/ us-gaap_AwardTypeAxis
= axll_PerformanceBasedRestrictedStockUnitsMember
/ axll_PerformanceCriteriaAxis
= axll_CompanyRelativeTotalShareholderReturnAsComparedToPeerCompaniesMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember