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Commitments and Contingencies Product Liability (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Movement in Standard Product Warranty Accrual [Roll Forward]
Beginning balance	$ 14.3us-gaap_ProductWarrantyAccrual	$ 29.1us-gaap_ProductWarrantyAccrual
Accruals	9.3us-gaap_ProductWarrantyAccrualWarrantiesIssued	12.8us-gaap_ProductWarrantyAccrualWarrantiesIssued
Settlements	(2.2)us-gaap_ProductWarrantyAccrualPayments	(12.3)us-gaap_ProductWarrantyAccrualPayments
Adjustments to prior period accruals	(8.7)us-gaap_ProductWarrantyAccrualPreexistingIncreaseDecrease	(15.0)us-gaap_ProductWarrantyAccrualPreexistingIncreaseDecrease
Foreign currency translation and other	(0.3)us-gaap_ProductWarrantyAccrualCurrencyTranslationIncreaseDecrease	(0.3)us-gaap_ProductWarrantyAccrualCurrencyTranslationIncreaseDecrease
Ending balance	12.4us-gaap_ProductWarrantyAccrual	14.3us-gaap_ProductWarrantyAccrual
Field Action [Member]
Movement in Standard Product Warranty Accrual [Roll Forward]
Accruals		2.3us-gaap_ProductWarrantyAccrualWarrantiesIssued / us-gaap_LossContingenciesByNatureOfContingencyAxis = axl_FieldActionMember	9.9us-gaap_ProductWarrantyAccrualWarrantiesIssued / us-gaap_LossContingenciesByNatureOfContingencyAxis = axl_FieldActionMember
Settlements		$ (11.3)us-gaap_ProductWarrantyAccrualPayments / us-gaap_LossContingenciesByNatureOfContingencyAxis = axl_FieldActionMember

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.15(5))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 15

-Subparagraph 5

-Article 9



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 8

-Subparagraph ((c)(5))

-URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249

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- Definition

Total Increase or Decrease in the standard and extended product warranty liability due to currency translation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 8

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249

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- Definition

Represents the aggregate decrease in the liability related to payments to satisfy claims for standard and extended product warranties.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 8

-Subparagraph ((c)(2))

-URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249

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- Definition

Represents the aggregate Increase or Decrease in the liability during the reporting period for accruals related to preexisting standard and extended product warranties (including adjustments for changes in estimates).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 8

-Subparagraph ((c)(4))

-URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249

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- Definition

Represents the aggregate increase in the liability for accruals related to standard and extended product warranties issued during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 8

-Subparagraph ((c)(3))

-URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249

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