XML 73 R98.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Commitments and Contingencies Legal Proceedings (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012
Pension and OPEB, Period Expense, Other | $ 28.7

X
- Definition Represents pension and other postretirement benefits expense recorded to cost of goods sold in the period as a result of our election to apply the provisions of Moving Ahead for Progress in the 21st Century Act (MAP-21) and other actions taken by AAM. This expense represents incremental pension and other postretirement benefits that certain eligble associates will receive as a result of our plant closures during the reporting period. + References No definition available. + Details
Name: | axl_PensionAndOpebPeriodExpenseOther
Namespace Prefix: | axl_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration