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v2.4.0.6

Long-Term Debt (Details 1) | 6 Months Ended
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Jun. 30, 2012
Financial covenants include required specified ratios |
Required consolidated liquidity ratio | 1.05
Required consolidated fixed charge coverage ratio | 1.20
Required Consolidated Total Lease Adjusted Leverage Ratio | 5.50
Actual consolidated liquidity ratio | 1.16
Actual consolidated fixed charge coverage ratio | 1.56
Actual consolidated lease adjusted leverage ratio | 3.88

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- Definition Actual consolidated fixed charge coverage ratio. + References No definition available. + Details
Name: | sah_ActualConsolidatedFixedChargeCoverageRatio
Namespace Prefix: | sah_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

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- Definition Actual consolidated lease adjusted leverage ratio. + References No definition available. + Details
Name: | sah_ActualConsolidatedLeaseAdjustedLeverageRatio
Namespace Prefix: | sah_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

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- Definition Actual consolidated liquidity ratio. + References No definition available. + Details
Name: | sah_ActualConsolidatedLiquidityRatio
Namespace Prefix: | sah_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: | sah_
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Balance Type: | na
Period Type: | duration

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- Definition Maximum required consolidated lease adjusted leverage ratio. + References No definition available. + Details
Name: | sah_MaximumRequiredConsolidatedLeaseAdjustedLeverageRatio
Namespace Prefix: | sah_
Data Type: | xbrli:pureItemType
Balance Type: | na
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- Definition Minimum required consolidated fixed charge coverage ratio. + References No definition available. + Details
Name: | sah_MinimumRequiredConsolidatedFixedChargeCoverageRatio
Namespace Prefix: | sah_
Data Type: | xbrli:pureItemType
Balance Type: | na
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- Definition Minimum required consolidated liquidity ratio. + References No definition available. + Details
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Namespace Prefix: | sah_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant