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