American Axle & Manufacturing (AXL) 10-Q 29 Jul 16 2016 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information Document - shares	6 Months Ended
	Jun. 30, 2016	Jul. 27, 2016
Entity Registrant Name	AMERICAN AXLE & MANUFACTURING HOLDINGS INC
Entity Central Index Key	1,062,231
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q2
Document Period End Date	Jun. 30, 2016
Amendment Flag	false
Document Type	10-Q
Entity Well-known Seasoned Issuer	Yes
Entity Common Stock, Shares Outstanding		76,445,220
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Net sales	$ 1,025.4	$ 1,004	$ 1,994.6	$ 1,973.1
Cost of goods sold	834	839.5	1,629.2	1,655.8
Gross profit	191.4	164.5	365.4	317.3
Selling, general and administrative expenses	79.9	70.6	155.5	139.1
Operating income	111.5	93.9	209.9	178.2
Interest expense	(23.4)	(24.8)	(47)	(49.9)
Investment income	1.5	0.6	2.1	1.4
Other income, net	2.1	1.8	3.1	4.2
Income before income taxes	91.7	71.5	168.1	133.9
Income tax expense	20.7	12.9	36	22.1
Net income	$ 71	$ 58.6	$ 132.1	$ 111.8
Basic earnings per share	$ 0.91	$ 0.75	$ 1.69	$ 1.44
Diluted earnings per share	$ 0.90	$ 0.75	$ 1.68	$ 1.43

Condensed Consolidated Stateme3

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Net income	$ 71	$ 58.6	$ 132.1	$ 111.8
Other comprehensive income (loss)
Defined benefit plans, net of tax (a)	0.5	0.9	4.7	4.8
Foreign currency translation adjustments	0.8	3	15.8	(28.5)
Changes in cash flow hedges	(5.7)	(1.2)	(2.3)	(1.7)
Other comprehensive income (loss)	(4.4)	2.7	18.2	(25.4)
Comprehensive income	$ 66.6	$ 61.3	$ 150.3	$ 86.4

Condensed Consolidated Stateme4

Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Other comprehensive income (loss), pension and other postretirement benefit plans, tax	$ (0.4)	$ (0.4)	$ (2.7)	$ (2.4)

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Current assets
Cash and cash equivalents	$ 388.4	$ 282.5
Accounts receivable, net	641.7	539.1
Inventories, net	226.9	230.5
Prepaid expenses and other	77.4	72.1
Total current assets	1,334.4	1,124.2
Property, plant and equipment, net	1,080.7	1,046.2
Deferred income taxes	352.2	373.6
Goodwill	154.4	154.4
GM postretirement cost sharing asset	238.2	243.2
Other assets and deferred charges	272.8	261.1
Total assets	3,432.7	3,202.7
Current liabilities
Current portion of long-term debt	3.4	3.3
Accounts payable	503.8	412.7
Accrued compensation and benefits	113	128
Deferred revenue	24.1	22.9
Accrued expenses and other	107.6	132.3
Total current liabilities	751.9	699.2
Long-term debt, net	1,403.3	1,375.7
Deferred revenue	57.1	65.7
Postretirement benefits and other long-term liabilities	763	760.6
Total liabilities	2,975.3	2,901.2
Stockholders' equity
Common stock, par value $0.01 per share	0.9	0.8
Paid-in capital	649.4	638.9
Retained earnings	336.3	204.2
Treasury stock at cost, 6.5 million shares as of June 30, 2016 and 6.2 million shares as of December 31, 2015	(190.9)	(185.9)
Accumulated other comprehensive loss
Defined benefit plans, net of tax	(219.2)	(223.9)
Foreign currency translation adjustments	(103.4)	(119.2)
Unrecognized loss on cash flow hedges	(15.7)	(13.4)
Total stockholders’ equity	457.4	301.5
Total liabilities and stockholders' equity	$ 3,432.7	$ 3,202.7

Condensed Consolidated Balance6

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares shares in Millions	Jun. 30, 2016	Dec. 31, 2015
Common stock, par or stated value per share	$ 0.01	$ 0.01
Treasury stock, shares	6.5	6.2

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Operating activities
Net income	$ 132.1	$ 111.8
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	100.5	100.6
Deferred income taxes	20.9	10.1
Stock-based compensation	10.5	7.7
Pensions and other postretirement benefits, net of contributions	(2.4)	0.2
Loss on disposal of property, plant and equipment, net	1.1	0.8
Changes in operating assets and liabilities
Accounts receivable	(100.6)	(110.7)
Inventories	6.3	8.3
Accounts payable and accrued expenses	74.8	59.9
Deferred revenue	(7.5)	(20.4)
Other assets and liabilities	(52.2)	(14)
Net cash provided by operating activities	183.5	154.3
Investing activities
Purchases of property, plant and equipment	(105.7)	(91.4)
Proceeds from sale of property, plant and equipment	0.6	0.1
Proceeds from government grants	2.8	0
Final distribution of Reserve Yield Plus Fund	1	0
Net cash used in investing activities	(101.3)	(91.3)
Financing activities
Payments of long-term debt and capital lease obligations	(3.8)	(17.3)
Proceeds from issuance of long-term debt	29.6	12.9
Purchase of treasury stock	(5)	(2.7)
Employee stock option exercises	0.1	0.4
Net cash provided by (used in) financing activities	20.9	(6.7)
Effect of exchange rate changes on cash	2.8	(4.2)
Net increase in cash and cash equivalents	105.9	52.1
Cash and cash equivalents at beginning of period	282.5	249.2
Cash and cash equivalents at end of period	388.4	301.3
Supplemental cash flow information
Interest paid	43.9	47.2
Income taxes paid, net of refunds	$ 38.1	$ 7.9

Organization and Basis of Prese

Organization and Basis of Presentation	6 Months Ended
	Jun. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	1. ORGANIZATION AND BASIS OF PRESENTATION Organization American Axle & Manufacturing Holdings, Inc. (Holdings) and its subsidiaries (collectively, we, our, us or AAM) is a Tier I supplier to the automotive industry. We manufacture, engineer, design and validate driveline and drivetrain systems and related components and chassis modules for light trucks, sport utility vehicles (SUVs), passenger cars, crossover vehicles and commercial vehicles. Driveline and drivetrain systems include components that transfer power from the transmission and deliver it to the drive wheels. Our driveline, drivetrain and related products include axles, chassis modules, driveshafts, power transfer units, transfer cases, chassis and steering components, driveheads, transmission parts, electric drive systems and metal-formed products. In addition to locations in the United States (U.S.) (Michigan, Ohio and Indiana), we also have offices or facilities in Brazil, China, Germany, India, Japan, Luxembourg, Mexico, Poland, Scotland, South Korea, Sweden and Thailand. Basis of Presentation We have prepared the accompanying interim condensed consolidated financial statements in accordance with the instructions to Form 10-Q under the Securities Exchange Act of 1934. These condensed consolidated financial statements are unaudited but include all normal recurring adjustments, which we consider necessary for a fair presentation of the information set forth herein. Results of operations for the periods presented are not necessarily indicative of the results for the full fiscal year. The balance sheet at December 31, 2015 presented herein has been derived from the audited consolidated financial statements at that date but does not include all of the information and footnotes required by accounting principles generally accepted in the United States of America (GAAP) for complete consolidated financial statements. In order to prepare the accompanying interim condensed consolidated financial statements, we are required to make estimates and assumptions that affect the reported amounts and disclosures in our interim condensed consolidated financial statements. Actual results could differ from those estimates. For further information, refer to the audited consolidated financial statements and notes included in our Annual Report on Form 10-K for the year ended December 31, 2015 . Effect of New Accounting Standards On March 31, 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2016-09 - Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. The update is intended to simplify the current guidance for stock-based compensation for a range of issues including: the timing of income statement impact for tax benefits or deficiencies in excess of compensation cost, the classification of tax-related cash flows resulting from share based payments, the allowable threshold for tax withholding without resulting in liability award classification, and a policy election for estimating forfeiture rates or recognizing forfeitures as they occur. This guidance becomes effective at the beginning of our 2017 fiscal year, however as permitted, we plan to early adopt this guidance in the fourth quarter of 2016. The guidance requires a retrospective, modified-retrospective, or prospective transition method depending on the applicable section of the ASU. We estimate the effect of implementing this ASU on our Consolidated Balance Sheet would increase our deferred tax assets and retained earnings by approximately $5.1 million as of January 1, 2016, using the modified-retrospective transition method, for the cumulative-effect adjustment of excess tax benefits that were not previously recognized because the related tax deduction had not reduced current taxes payable. We have evaluated the aspects of this new guidance and, other than this one-time increase in deferred tax assets and retained earnings, the adoption of this ASU will not have a material impact on our accounting for share-based payments. On February 25, 2016, the FASB issued ASU 2016-02 - Leases (Topic 842), which supersedes the existing lease accounting guidance and establishes new criteria for recognizing lease assets and liabilities. The most significant impact of the update, to AAM, is that a lessee will be required to recognize a "right-of-use" asset and lease liability for operating lease agreements that were not previously included on the balance sheet under the existing lease guidance. A lessee will be permitted to make a policy election, excluding recognition of the right-of-use asset and associated liability for lease terms of 12 months or less. Expense recognition in the statement of income along with cash flow statement classification for both financing (capital) and operating leases under the new standard will not be significantly changed from existing lease guidance. Accounting for leases as a lessor under the new guidance remains also largely unchanged. This guidance becomes effective for AAM at the beginning of our 2019 fiscal year and requires transition under a modified retrospective method. We are currently assessing the impact that this standard will have on our condensed consolidated financial statements. On May 1, 2015, the FASB issued ASU 2015-07 - Fair Value Measurement (Topic 820): Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (or Its Equivalent) , which changes the disclosure requirements for investments in certain entities that calculate net asset value (NAV) per share. Under current accounting standards entities are permitted to estimate the fair value of certain investments using the investment's NAV as a practical expedient. The current disclosure guidance also permits entities to disclose the investment at NAV in the fair value hierarchy table as either Level 2 or Level 3, based upon certain criteria. The measurement basis utilizing NAV is different than the measurement criteria of all other investments which utilize inputs to calculate fair value. Due to this inconsistency, the FASB issued this ASU which prohibits entities from categorizing investments measured at NAV within the fair value hierarchy. Other than the change in presentation, which requires retrospective application, the adoption of this new guidance will not have an impact on our condensed consolidated financial statements. AAM adopted this policy on January 1, 2016. In 2014, the FASB issued ASU 2014-09 - Revenue from Contracts with Customers (Topic 606) , which outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The guidance is based on the principle that an entity should recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments and assets recognized from costs incurred to fulfill a contract. Entities have the option of using either a full retrospective or a modified retrospective approach for the adoption of the new standard. On March 17, 2016, the FASB issued ASU 2016-08 - Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross Versus Net), to further clarify the new standard's guidance on identifying gross versus net reporting in the context of a contract. Based on the clarification, an entity should analyze the principal versus agent relationship for each specified good or service within a contract. On April 14, 2016, the FASB issued ASU 2016-10 - Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing, which better articulates the principle for determining whether promised goods or services are separately identifiable in the context of the contract. The guidance also excludes from an entity's performance obligation analysis, the requirement to assess certain promised contract goods and services deemed immaterial in the context of the contract. On May 9, 2016, the FASB issued ASU 2016-12 - Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients , which addresses improvements to the guidance on collectibility, non-cash consideration, and completed contracts at transition. The update also provides a practical expedient for contract modifications at transition and a policy election related to the presentation of sales taxes and other similar taxes collected from customers. On August 12, 2015, the FASB issued ASU 2015-14 - Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date , to formally defer the initial standard's effective date by one-year, making this guidance effective for AAM at the beginning of our 2018 fiscal year. We are currently assessing the impact that this standard will have on our condensed consolidated financial statements. Share Repurchase Program In the second quarter of 2016, AAM's Board of Directors authorized a share repurchase program of up to $100 million of AAM's common shares through December 31, 2018 as part of AAM's overall capital allocation strategy. The repurchase of shares may be made in the open market or in privately negotiated transactions and will be funded through available cash balances and cash flow from operations. The timing and amount of any share repurchases will be determined based on market and economic conditions, share price, alternative uses of capital and other factors. During the second quarter of 2016, we completed an initial share repurchase of 100,000 shares for $1.5 million under the authorized share repurchase program.

Inventories

Inventories	6 Months Ended
	Jun. 30, 2016
Inventory Disclosure [Abstract]
Inventory Disclosure [Text Block]	2. INVENTORIES We state our inventories at the lower of cost or market. The cost of our inventories is determined using the FIFO method. When we determine that our gross inventories exceed usage requirements, or if inventories become obsolete or otherwise not saleable, we record a provision for such loss as a component of our inventory accounts. Inventories consist of the following: June 30, 2016 December 31, 2015 (in millions) Raw materials and work-in-progress $ 221.3 $ 228.7 Finished goods 34.2 31.1 Gross inventories 255.5 259.8 Inventory valuation reserves (28.6 ) (29.3 ) Inventories, net $ 226.9 $ 230.5

Long-Term Debt

Long-Term Debt	6 Months Ended
	Jun. 30, 2016
Debt Disclosure [Abstract]
Long-term Debt [Text Block]	3. LONG-TERM DEBT Long-term debt consists of the following: June 30, 2016 December 31, 2015 (in millions) Revolving Credit Facility $ — $ — 7.75% Notes 200.0 200.0 6.625% Notes 550.0 550.0 6.25% Notes 400.0 400.0 5.125% Notes 200.0 200.0 Foreign credit facilities 64.6 38.0 Capital lease obligations 5.3 5.6 Total debt 1,419.9 1,393.6 Less: Current portion of long-term debt 3.4 3.3 Long-term debt 1,416.5 1,390.3 Less: Debt issuance costs 13.2 14.6 Long-term debt, net $ 1,403.3 $ 1,375.7 Revolving Credit Facility As of June 30, 2016 , the revolving credit facility provided up to $523.5 million of revolving bank financing commitments through September 13, 2018. At June 30, 2016 , we had $513.1 million available under the revolving credit facility. This availability reflects a reduction of $10.4 million for standby letters of credit issued against the facility. The revolving credit facility provides back-up liquidity for our foreign credit facilities. We intend to use the availability of long-term financing under the revolving credit facility to refinance any current maturities related to such debt agreements that are not otherwise refinanced on a long-term basis in their local markets, except where otherwise reclassified to current portion of long-term debt on our Condensed Consolidated Balance Sheet. Foreign credit facilities We utilize local currency credit facilities to finance the operations of certain foreign subsidiaries. During the six months ended June 30, 2016, we increased the borrowings on our foreign credit facilities, primarily to fund capital expenditures and working capital in preparation for the launch of programs in China. At June 30, 2016 , $64.6 million was outstanding under our foreign credit facilities and an additional $62.9 million was available. The weighted-average interest rate of our long-term debt outstanding was 6.6% at June 30, 2016 and 6.5% at December 31, 2015 .

Fair Value

Fair Value	6 Months Ended
	Jun. 30, 2016
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Text Block]	4. FAIR VALUE The fair value accounting guidance defines fair value as “the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.” The definition is based on an exit price rather than an entry price, regardless of whether the entity plans to hold or sell the asset. This guidance also establishes a fair value hierarchy to prioritize inputs used in measuring fair value as follows: • Level 1: Observable inputs such as quoted prices in active markets; • Level 2: Inputs, other than quoted prices in active markets, that are observable either directly or indirectly; and • Level 3: Unobservable inputs in which there is little or no market data, which require the reporting entity to develop its own assumptions. Financial instruments The estimated fair value of our financial assets and liabilities that are recognized at fair value on a recurring basis, using available market information and other observable data, are as follows: June 30, 2016 December 31, 2015 Carrying Amount Fair Value Carrying Amount Fair Value Input (in millions) Balance Sheet Classification Cash equivalents $ 97.7 $ 97.7 $ 61.7 $ 61.7 Level 1 Currency forward contracts - Prepaid expenses and other Nondesignated currency forward contracts 0.4 0.4 0.2 0.2 Level 2 Currency forward contracts - Other assets and deferred charges Cash flow hedges 0.4 0.4 — — Level 2 Currency forward contracts - Accrued expenses and other Cash flow hedges 8.8 8.8 7.5 7.5 Level 2 Nondesignated currency forward contracts 1.3 1.3 1.9 1.9 Level 2 Currency forward contracts - Postretirement benefits and other long-term liabilities Cash flow hedges 7.3 7.3 5.9 5.9 Level 2 The carrying values of our cash, accounts receivable, accounts payable and accrued liabilities approximate their fair values due to the short-term maturities of these instruments. The carrying values of our borrowings under the foreign credit facilities approximate their fair value due to the frequent resetting of the interest rates. We estimated the fair value of the amounts outstanding on our debt using available market information and other observable data, to be as follows: June 30, 2016 December 31, 2015 Carrying Amount Fair Value Carrying Amount Fair Value Input (in millions) Revolving Credit Facility $ — $ — $ — $ — Level 2 7.75% Notes 200.0 222.0 200.0 218.5 Level 2 6.625% Notes 550.0 578.9 550.0 574.8 Level 2 6.25% Notes 400.0 416.0 400.0 415.0 Level 2 5.125% Notes 200.0 203.5 200.0 202.0 Level 2

Derivatives

Derivatives	6 Months Ended
	Jun. 30, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities Disclosure [Text Block]	5. DERIVATIVES Our business and financial results are affected by fluctuations in world financial markets, including interest rates and currency exchange rates. Our hedging policy has been developed to manage these risks to an acceptable level based on management’s judgment of the appropriate trade-off between risk, opportunity and cost. We do not hold financial instruments for trading or speculative purposes. Currency forward contracts From time to time, we use foreign currency forward contracts to reduce the effects of fluctuations in exchange rates, primarily relating to the Mexican Peso, Euro, Brazilian Real, British Pound Sterling, Thai Baht, Swedish Krona, Chinese Yuan and Polish Zloty. As of June 30, 2016 , we have currency forward contracts outstanding with a notional amount of $196.8 million that hedge our exposure to changes in foreign currency exchange rates for certain payroll expenses into the second quarter of 2019 and certain direct and indirect inventory and other working capital items through 2016. The following table summarizes the reclassification of pre-tax derivative losses into net income from accumulated other comprehensive loss for those derivative instruments designated as cash flow hedges under Accounting Standards Codification 815 - Derivatives and Hedging (ASC 815): Loss Reclassified During Loss Expected to Location of Loss Three Months Ended Six Months Ended be Reclassified Reclassified into June 30, June 30, During the Net Income 2016 2015 2016 2015 Next 12 Months (in millions) Currency forward contracts Cost of Goods Sold $ (2.3 ) $ (2.3 ) $ (4.3 ) $ (3.8 ) $ (8.8 ) See Note 10 - Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (AOCI) for amounts recognized in other comprehensive income (loss) during the three and six months ended June 30, 2016 and June 30, 2015. The following table summarizes the amount and location of losses recognized in the Condensed Consolidated Statements of Income for those derivative instruments not designated as hedging instruments under ASC 815: Loss Recognized During Location of Loss Three Months Ended Six Months Ended Recognized in June 30, June 30, Net Income 2016 2015 2016 2015 (in millions) Currency forward contracts Cost of Goods Sold $ (2.2 ) $ (1.0 ) $ (2.7 ) $ (2.0 ) Currency forward contracts Other Income, Net — (0.3 ) (0.7 ) (0.3 )

Employee Benefit Plans

Employee Benefit Plans	6 Months Ended
	Jun. 30, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Pension and Other Postretirement Benefits Disclosure [Text Block]	6. EMPLOYEE BENEFIT PLANS The components of net periodic benefit cost (credit) are as follows: Pension Benefits Three Months Ended Six Months Ended June 30, June 30, 2016 2015 2016 2015 (in millions) Service cost $ 0.8 $ 0.8 $ 1.5 $ 1.6 Interest cost 7.3 7.2 14.6 14.4 Expected asset return (10.7 ) (10.6 ) (21.4 ) (21.2 ) Amortized loss 1.4 1.3 2.8 3.0 Net periodic benefit credit $ (1.2 ) $ (1.3 ) $ (2.5 ) $ (2.2 ) Other Postretirement Benefits Three Months Ended Six Months Ended June 30, June 30, 2016 2015 2016 2015 (in millions) Service cost $ 0.1 $ 0.1 $ 0.2 $ 0.2 Interest cost 3.5 3.8 7.0 7.6 Amortized loss 0.1 0.2 0.2 0.4 Amortized prior service credit (0.6 ) (0.7 ) (1.3 ) (1.4 ) Net periodic benefit cost $ 3.1 $ 3.4 $ 6.1 $ 6.8 The noncurrent liabilities associated with our pension and other postretirement benefit plans are classified as postretirement benefits and other long-term liabilities on our Condensed Consolidated Balance Sheets. As of June 30, 2016 and December 31, 2015 , we have a noncurrent pension liability of $100.7 million and $103.1 million , respectively. As of June 30, 2016 and December 31, 2015 , we have a noncurrent other postretirement benefits liability of $544.8 million and $559.0 million , respectively. Due to the availability of our prefunding balances (previous contributions in excess of prior required pension contributions) for our U.S. pension plans and our contributions made in 2015 for our U.K. pension plan, we are not required to make any cash payments to our pension trusts in 2016. We expect our cash payments for other postretirement benefit obligations in 2016, net of GM cost sharing, to be approximately $16 million .

Product Warranties

Product Warranties	6 Months Ended
	Jun. 30, 2016
Product Warranties Disclosures [Abstract]
Product Warranty Disclosure [Text Block]	7. PRODUCT WARRANTIES We record a liability for estimated warranty obligations at the dates our products are sold. These estimates are established using sales volumes and internal and external warranty data where there is no payment history and historical information about the average cost of warranty claims for customers with prior claims. We estimate our costs based on the contractual arrangements with our customers, existing customer warranty terms and internal and external warranty data, which includes a determination of our warranty claims and actions taken to improve product quality and minimize warranty claims. We continuously evaluate these estimates and our customers' administration of their warranty programs. We closely monitor actual warranty claim data and adjust the liability, as necessary, on a quarterly basis. The following table provides a reconciliation of changes in the product warranty liability: Three Months Ended Six Months Ended June 30, June 30, 2016 2015 2016 2015 (in millions) Beginning balance $ 37.0 $ 17.9 $ 36.6 $ 12.4 Accruals 4.1 5.0 8.0 9.5 Payments (3.2 ) (0.4 ) (3.7 ) (0.6 ) Adjustment to prior period accruals — 0.8 (3.1 ) 2.2 Foreign currency translation — (0.1 ) 0.1 (0.3 ) Ending balance $ 37.9 $ 23.2 $ 37.9 $ 23.2

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2016
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	8. INCOME TAXES We are required to adjust our effective tax rate each quarter to estimate our annual effective tax rate. We must also record the tax impact of certain discrete, unusual or infrequently occurring items, including changes in judgment about valuation allowances and effects of changes in tax laws or rates, in the interim period in which they occur. In addition, jurisdictions with a projected loss for the year or a year-to-date loss where no tax benefit can be recognized are excluded from the estimated annual effective tax rate. The impact of such an exclusion could result in a higher or lower effective tax rate during a particular quarter, based upon the mix and timing of actual earnings versus annual projections. Income tax expense was $20.7 million in the three months ended June 30, 2016 as compared to $12.9 million in the three months ended June 30, 2015 . Our effective income tax rate was 22.6% in the second quarter of 2016 as compared to 18.0% in the second quarter of 2015 . Income tax expense was $36.0 million in the six months ended June 30, 2016 as compared to $22.1 million in the six months ended June 30, 2015 . Our effective income tax rate was 21.4% in the six months ended June 30, 2016 as compared to 16.5% in the six months ended June 30, 2015 . Our effective tax rates for the three and six months ended June 30, 2016 are higher than our effective tax rates for the three and six months ended June 30, 2015 primarily as a result of an increase in the proportionate share of income attributable to higher tax rate jurisdictions. Our income tax expense and effective tax rates for the three and six months ended June 30, 2016 and June 30, 2015 reflect the impact of favorable foreign tax rates, partially offset by our inability to realize a tax benefit for current foreign losses. Based on the status of audits outside the U.S., and the protocol of finalizing audits by the relevant tax authorities, it is not possible to estimate the timing or impact of changes, if any, to previously recorded uncertain tax positions. As of June 30, 2016 and December 31, 2015, we have recorded a liability for unrecognized income tax benefits and related interest and penalties of $29.6 million and $48.5 million , respectively. In January 2016, we completed negotiations with the Mexican tax authorities to settle transfer pricing audits. Including these settlements, we made payments of $26.1 million in the first six months of 2016 to the Mexican tax authorities related to transfer pricing matters and we expect our total transfer pricing related payments in 2016 to be in the range of $30 to $40 million . Although it is difficult to estimate with certainty the amount of our tax liabilities for the years that remain subject to audit, we do not expect the settlements will be materially different from what we have recorded in unrecognized tax benefits. We will continue to monitor the progress and conclusions of current and future audits and will adjust our estimated liability as necessary.

Earnings Per Share (EPS)

Earnings Per Share (EPS)	6 Months Ended
	Jun. 30, 2016
Earnings Per Share [Abstract]
Earnings Per Share [Text Block]	9. EARNINGS PER SHARE (EPS) We present earnings per share using the two-class method. This method allocates undistributed earnings between common shares and non-vested share based payment awards that entitle the holder to non-forfeitable dividend rights. Our participating securities include non-vested restricted stock units. The following table sets forth the computation of our basic and diluted EPS available to shareholders of common stock (excluding participating securities): Three Months Ended Six Months Ended June 30, June 30, 2016 2015 2016 2015 (in millions, except per share data) Numerator Net income $ 71.0 $ 58.6 $ 132.1 $ 111.8 Less: Net income attributable to participating securities (1.7 ) (1.4 ) (3.0 ) (2.6 ) Net income attributable to common shareholders - Basic $ 69.3 $ 57.2 $ 129.1 $ 109.2 Undistributed earnings reallocated to common shareholders under two step dilutive method — — — — Net income attributable to common shareholders - Dilutive $ 69.3 $ 57.2 $ 129.1 $ 109.2 Denominators Basic common shares outstanding - Weighted-average shares outstanding 78.3 77.8 78.1 77.7 Less: Participating securities (1.8 ) (1.9 ) (1.8 ) (1.9 ) Weighted-average common shares outstanding 76.5 75.9 76.3 75.8 Effect of dilutive securities - Dilutive stock-based compensation 0.4 0.4 0.4 0.4 Diluted shares outstanding - Adjusted weighted-average shares after assumed conversions 76.9 76.3 76.7 76.2 Basic EPS $ 0.91 $ 0.75 $ 1.69 $ 1.44 Diluted EPS $ 0.90 $ 0.75 $ 1.68 $ 1.43 Certain exercisable stock options were excluded from the computations of diluted EPS because the exercise price of these options was greater than the average period market prices. The number of stock options outstanding, which were not included in the calculation of diluted EPS, was 0.2 million at both June 30, 2016 and June 30, 2015 . The exercise price related to the excluded exercisable stock options was $26.02 at both June 30, 2016 and June 30, 2015 .

Reclassifications out of Accumu

Reclassifications out of Accumulated Other Comprehensive Income (Loss)	6 Months Ended
	Jun. 30, 2016
Reclassifications out of Accumulated Other Comprehensive Income (Loss) [Abstract]
Disclosure of Reclassification Amount [Text Block]	10. RECLASSIFICATIONS OUT OF ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (AOCI) Reclassification adjustments and other activity impacting accumulated other comprehensive income (loss) during the three months ended June 30, 2016 and June 30, 2015 are as follows (in millions) : Defined Benefit Plans Foreign Currency Translation Adjustments Unrecognized Loss on Cash Flow Hedges Total Balance at March 31, 2016 $ (219.7 ) $ (104.2 ) $ (10.0 ) $ (333.9 ) Other comprehensive income (loss) before reclassifications — 0.8 (8.0 ) (7.2 ) Income tax effect of other comprehensive income (loss) before reclassifications — — — — Amounts reclassified from accumulated other comprehensive loss 0.9 (a) — 2.3 (b) 3.2 Income tax benefit reclassified into net income (0.4 ) — — (0.4 ) Net current period other comprehensive income (loss) 0.5 0.8 (5.7 ) (4.4 ) Balance at June 30, 2016 $ (219.2 ) $ (103.4 ) $ (15.7 ) $ (338.3 ) Defined Benefit Plans Foreign Currency Translation Adjustments Unrecognized Loss on Cash Flow Hedges Total Balance at March 31, 2015 $ (236.7 ) $ (80.4 ) $ (7.9 ) $ (325.0 ) Other comprehensive income (loss) before reclassifications — 3.0 (3.5 ) (0.5 ) Income tax effect of other comprehensive income (loss) before reclassifications — — — — Amounts reclassified from accumulated other comprehensive loss 1.3 (a) — 2.3 (b) 3.6 Income tax benefit reclassified into net income (0.4 ) — — (0.4 ) Net current period other comprehensive income (loss) 0.9 3.0 (1.2 ) 2.7 Balance at June 30, 2015 $ (235.8 ) $ (77.4 ) $ (9.1 ) $ (322.3 ) (a) The amount reclassified from AOCI included $1.2 million in cost of goods sold (COGS) and $(0.3) million in selling, general & administrative expenses (SG&A) for the three months ended June 30, 2016 and $1.5 million in COGS and $(0.2) million in SG&A for the three months ended June 30, 2015. (b) The amounts reclassified from AOCI are included in COGS. Reclassification adjustments and other activity impacting accumulated other comprehensive income (loss) during the six months ended June 30, 2016 and June 30, 2015 are as follows (in millions) : Defined Benefit Plans Foreign Currency Translation Adjustments Unrecognized Loss on Cash Flow Hedges Total Balance at December 31, 2015 $ (223.9 ) $ (119.2 ) $ (13.4 ) $ (356.5 ) Other comprehensive income (loss) before reclassifications 5.7 15.8 (6.6 ) 14.9 Income tax effect of other comprehensive income (loss) before reclassifications (2.0 ) — — (2.0 ) Amounts reclassified from accumulated other comprehensive loss 1.7 (a) — 4.3 (b) 6.0 Income tax benefit reclassified into net income (0.7 ) — — (0.7 ) Net current period other comprehensive income (loss) 4.7 15.8 (2.3 ) 18.2 Balance at June 30, 2016 $ (219.2 ) $ (103.4 ) $ (15.7 ) $ (338.3 ) Defined Benefit Plans Foreign Currency Translation Adjustments Unrecognized Loss on Cash Flow Hedges Total Balance at December 31, 2014 $ (240.6 ) $ (48.9 ) $ (7.4 ) $ (296.9 ) Other comprehensive income (loss) before reclassifications 4.7 (28.5 ) (5.5 ) (29.3 ) Income tax effect of other comprehensive income (loss) before reclassifications (1.6 ) — — (1.6 ) Amounts reclassified from accumulated other comprehensive loss 2.5 (a) — 3.8 (b) 6.3 Income tax benefit reclassified into net income (0.8 ) — — (0.8 ) Net current period other comprehensive income (loss) 4.8 (28.5 ) (1.7 ) (25.4 ) Balance at June 30, 2015 $ (235.8 ) $ (77.4 ) $ (9.1 ) $ (322.3 ) (a) The amount reclassified from AOCI included $2.3 million in COGS and $(0.6) million in SG&A for the six months ended June 30, 2016 and $2.9 million in COGS and $(0.4) million in SG&A for the six months ended June 30, 2015. (b) The amounts reclassified from AOCI are included in COGS.

Supplemental Guarantor Condense

Supplemental Guarantor Condensed Consolidating Financial Statements	6 Months Ended
	Jun. 30, 2016
Supplemental Guarantor Condensed Consolidating Financial Statements [Abstract]
Supplemental Guarantor Disclosure [Text Block]	11. SUPPLEMENTAL GUARANTOR CONDENSED CONSOLIDATING FINANCIAL STATEMENTS Holdings has no significant assets other than its 100% ownership in AAM, Inc. and no direct subsidiaries other than AAM, Inc. The 7.75% Notes, 6.625% Notes, 6.25% Notes and 5.125% Notes are senior unsecured obligations of AAM Inc.; all of which are fully and unconditionally guaranteed, on a joint and several basis, by Holdings and substantially all domestic subsidiaries of AAM, Inc, which are 100% indirectly owned by Holdings. These Condensed Consolidating Financial Statements are prepared under the equity method of accounting whereby the investments in subsidiaries are recorded at cost and adjusted for the parent’s share of the subsidiaries’ cumulative results of operations, capital contributions and distributions, and other equity changes. Condensed Consolidating Statements of Income Three Months Ended June 30, (in millions) Holdings AAM Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Elims Consolidated 2016 Net sales External $ — $ 308.4 $ 56.7 $ 660.3 $ — $ 1,025.4 Intercompany — 2.8 63.3 4.1 (70.2 ) — Total net sales — 311.2 120.0 664.4 (70.2 ) 1,025.4 Cost of goods sold — 291.8 96.9 515.5 (70.2 ) 834.0 Gross profit — 19.4 23.1 148.9 — 191.4 Selling, general and administrative expenses — 70.2 — 9.7 — 79.9 Operating income (loss) — (50.8 ) 23.1 139.2 — 111.5 Non-operating income (expense), net — (23.5 ) 2.5 1.2 — (19.8 ) Income (loss) before income taxes — (74.3 ) 25.6 140.4 — 91.7 Income tax expense — 13.2 0.1 7.4 — 20.7 Earnings (loss) from equity in subsidiaries 71.0 86.3 (11.3 ) — (146.0 ) — Net income (loss) before royalties 71.0 (1.2 ) 14.2 133.0 (146.0 ) 71.0 Royalties — 72.2 — (72.2 ) — — Net income after royalties 71.0 71.0 14.2 60.8 (146.0 ) 71.0 Other comprehensive income (loss), net of tax (4.4 ) (4.4 ) 6.5 0.4 (2.5 ) (4.4 ) Comprehensive income $ 66.6 $ 66.6 $ 20.7 $ 61.2 $ (148.5 ) $ 66.6 Holdings AAM Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Elims Consolidated 2015 Net sales External $ — $ 298.7 $ 56.7 $ 648.6 $ — $ 1,004.0 Intercompany — 2.4 65.9 5.3 (73.6 ) — Total net sales — 301.1 122.6 653.9 (73.6 ) 1,004.0 Cost of goods sold — 292.7 99.7 520.7 (73.6 ) 839.5 Gross profit — 8.4 22.9 133.2 — 164.5 Selling, general and administrative expenses — 60.1 — 10.5 — 70.6 Operating income (loss) — (51.7 ) 22.9 122.7 — 93.9 Non-operating income (expense), net — (25.3 ) 2.8 0.1 — (22.4 ) Income (loss) before income taxes — (77.0 ) 25.7 122.8 — 71.5 Income tax expense — 7.5 0.1 5.3 — 12.9 Earnings (loss) from equity in subsidiaries 58.6 81.6 (3.4 ) — (136.8 ) — Net income (loss) before royalties 58.6 (2.9 ) 22.2 117.5 (136.8 ) 58.6 Royalties — 61.5 — (61.5 ) — — Net income after royalties 58.6 58.6 22.2 56.0 (136.8 ) 58.6 Other comprehensive income (loss), net of tax 2.7 2.7 (0.2 ) (0.3 ) (2.2 ) 2.7 Comprehensive income $ 61.3 $ 61.3 $ 22.0 $ 55.7 $ (139.0 ) $ 61.3 Condensed Consolidating Statements of Income Six Months Ended June 30, (in millions) Holdings AAM Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Elims Consolidated 2016 Net sales External $ — $ 591.6 $ 111.5 $ 1,291.5 $ — $ 1,994.6 Intercompany — 4.4 123.0 7.8 (135.2 ) — Total net sales — 596.0 234.5 1,299.3 (135.2 ) 1,994.6 Cost of goods sold — 568.1 189.4 1,006.9 (135.2 ) 1,629.2 Gross profit — 27.9 45.1 292.4 — 365.4 Selling, general and administrative expenses — 137.7 — 17.8 — 155.5 Operating income (loss) — (109.8 ) 45.1 274.6 — 209.9 Non-operating income (expense), net — (47.8 ) 5.5 0.5 — (41.8 ) Income (loss) before income taxes — (157.6 ) 50.6 275.1 — 168.1 Income tax expense — 21.0 0.2 14.8 — 36.0 Earnings (loss) from equity in subsidiaries 132.1 179.2 (20.9 ) — (290.4 ) — Net income before royalties 132.1 0.6 29.5 260.3 (290.4 ) 132.1 Royalties — 131.5 — (131.5 ) — — Net income after royalties 132.1 132.1 29.5 128.8 (290.4 ) 132.1 Other comprehensive income, net of tax 18.2 18.2 22.2 20.2 (60.6 ) 18.2 Comprehensive income $ 150.3 $ 150.3 $ 51.7 $ 149.0 $ (351.0 ) $ 150.3 Holdings AAM Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Elims Consolidated 2015 Net sales External $ — $ 573.6 $ 113.9 $ 1,285.6 $ — $ 1,973.1 Intercompany — 5.5 130.3 9.9 (145.7 ) — Total net sales — 579.1 244.2 1,295.5 (145.7 ) 1,973.1 Cost of goods sold — 563.6 200.3 1,037.6 (145.7 ) 1,655.8 Gross profit — 15.5 43.9 257.9 — 317.3 Selling, general and administrative expenses — 119.6 — 19.5 — 139.1 Operating income (loss) — (104.1 ) 43.9 238.4 — 178.2 Non-operating income (expense), net — (50.7 ) 5.1 1.3 — (44.3 ) Income (loss) before income taxes — (154.8 ) 49.0 239.7 — 133.9 Income tax expense (benefit) — 12.0 (0.3 ) 10.4 — 22.1 Earnings (loss) from equity in subsidiaries 111.8 156.5 (9.4 ) — (258.9 ) — Net income (loss) before royalties 111.8 (10.3 ) 39.9 229.3 (258.9 ) 111.8 Royalties — 122.1 — (122.1 ) — — Net income after royalties 111.8 111.8 39.9 107.2 (258.9 ) 111.8 Other comprehensive loss, net of tax (25.4 ) (25.4 ) (27.2 ) (29.0 ) 81.6 (25.4 ) Comprehensive income $ 86.4 $ 86.4 $ 12.7 $ 78.2 $ (177.3 ) $ 86.4 Condensed Consolidating Balance Sheets (in millions) Holdings AAM Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Elims Consolidated June 30, 2016 Assets Current assets Cash and cash equivalents $ — $ 169.1 $ — $ 219.3 $ — $ 388.4 Accounts receivable, net — 159.2 28.2 454.3 — 641.7 Intercompany receivables — 296.5 297.0 9.1 (602.6 ) — Inventories, net — 53.7 28.0 145.2 — 226.9 Prepaid expenses and other — 24.1 0.4 52.9 — 77.4 Total current assets — 702.6 353.6 880.8 (602.6 ) 1,334.4 Property, plant and equipment, net — 213.0 95.4 772.3 — 1,080.7 Goodwill — — 147.8 6.6 — 154.4 Intercompany notes and accounts receivable — 346.9 248.7 — (595.6 ) — Other assets and deferred charges — 653.8 42.1 167.3 — 863.2 Investment in subsidiaries 783.3 1,487.6 — — (2,270.9 ) — Total assets $ 783.3 $ 3,403.9 $ 887.6 $ 1,827.0 $ (3,469.1 ) $ 3,432.7 Liabilities and Stockholders’ Equity Current liabilities Current portion of long-term debt $ — $ — $ — $ 3.4 $ — $ 3.4 Accounts payable — 146.6 43.5 313.7 — 503.8 Intercompany payables — 293.9 160.3 148.4 (602.6 ) — Accrued expenses and other — 123.0 4.7 117.0 — 244.7 Total current liabilities — 563.5 208.5 582.5 (602.6 ) 751.9 Intercompany notes and accounts payable 325.9 — 26.1 243.6 (595.6 ) — Long-term debt, net — 1,337.8 4.3 61.2 — 1,403.3 Investment in subsidiaries obligation — — 105.9 — (105.9 ) — Other long-term liabilities — 719.3 0.5 100.3 — 820.1 Total liabilities 325.9 2,620.6 345.3 987.6 (1,304.1 ) 2,975.3 Total stockholders’ equity 457.4 783.3 542.3 839.4 (2,165.0 ) 457.4 Total liabilities and stockholders’ equity $ 783.3 $ 3,403.9 $ 887.6 $ 1,827.0 $ (3,469.1 ) $ 3,432.7 Holdings AAM Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Elims Consolidated December 31, 2015 Assets Current assets Cash and cash equivalents $ — $ 52.0 $ — $ 230.5 $ — $ 282.5 Accounts receivable, net — 127.2 19.7 392.2 — 539.1 Intercompany receivables — 311.8 249.7 9.4 (570.9 ) — Inventories, net — 59.8 31.1 139.6 — 230.5 Prepaid expenses and other — 30.4 0.5 41.2 — 72.1 Total current assets — 581.2 301.0 812.9 (570.9 ) 1,124.2 Property, plant and equipment, net — 214.1 91.9 740.2 — 1,046.2 Goodwill — — 147.8 6.6 — 154.4 Intercompany notes and accounts receivable — 393.5 252.2 — (645.7 ) — Other assets and deferred charges — 683.6 41.4 152.9 — 877.9 Investment in subsidiaries 622.3 1,315.9 — — (1,938.2 ) — Total assets $ 622.3 $ 3,188.3 $ 834.3 $ 1,712.6 $ (3,154.8 ) $ 3,202.7 Liabilities and Stockholders’ Equity Current liabilities Current portion of long-term debt $ — $ — $ — $ 3.3 $ — $ 3.3 Accounts payable — 103.0 35.8 273.9 — 412.7 Intercompany payables — 248.7 154.9 167.3 (570.9 ) — Accrued expenses and other — 134.2 4.1 144.9 — 283.2 Total current liabilities — 485.9 194.8 589.4 (570.9 ) 699.2 Intercompany notes and accounts payable 320.8 10.3 — 314.6 (645.7 ) — Long-term debt, net — 1,336.5 4.5 34.7 — 1,375.7 Investment in subsidiaries obligation — — 111.7 — (111.7 ) — Other long-term liabilities — 733.3 0.5 92.5 — 826.3 Total liabilities 320.8 2,566.0 311.5 1,031.2 (1,328.3 ) 2,901.2 Total stockholders’ equity 301.5 622.3 522.8 681.4 (1,826.5 ) 301.5 Total liabilities and stockholders’ equity $ 622.3 $ 3,188.3 $ 834.3 $ 1,712.6 $ (3,154.8 ) $ 3,202.7 Condensed Consolidating Statements of Cash Flows Six Months Ended June 30, (in millions) Holdings AAM Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Elims Consolidated 2016 Net cash provided by operating activities $ — $ 140.2 $ 11.6 $ 31.7 $ — $ 183.5 Investing activities Purchases of property, plant and equipment — (18.8 ) (9.6 ) (77.3 ) — (105.7 ) Proceeds from sale of property, plant and equipment — — 0.2 0.4 — 0.6 Proceeds from government grants — — — 2.8 — 2.8 Final distribution of Reserve Yield Plus Fund — 1.0 — — — 1.0 Intercompany activity — — (2.0 ) — 2.0 — Net cash used in investing activities — (17.8 ) (11.4 ) (74.1 ) 2.0 (101.3 ) Financing activities Net debt activity — (0.4 ) (0.2 ) 26.4 — 25.8 Employee stock option exercises — 0.1 — — — 0.1 Purchase of treasury stock (5.0 ) — — — — (5.0 ) Intercompany activity 5.0 (5.0 ) — 2.0 (2.0 ) — Net cash provided by (used in) financing activities — (5.3 ) (0.2 ) 28.4 (2.0 ) 20.9 Effect of exchange rate changes on cash — — — 2.8 — 2.8 Net increase (decrease) in cash and cash equivalents — 117.1 — (11.2 ) — 105.9 Cash and cash equivalents at beginning of period — 52.0 — 230.5 — 282.5 Cash and cash equivalents at end of period $ — $ 169.1 $ — $ 219.3 $ — $ 388.4 Holdings AAM Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Elims Consolidated 2015 Net cash provided by operating activities $ — $ 80.7 $ 23.1 $ 50.5 $ — $ 154.3 Investing activities Purchases of property, plant and equipment — (17.5 ) (4.9 ) (69.0 ) — (91.4 ) Proceeds from sale of property, plant and equipment — 0.1 — — — 0.1 Intercompany activity — — (18.0 ) — 18.0 — Net cash used in investing activities — (17.4 ) (22.9 ) (69.0 ) 18.0 (91.3 ) Financing activities Net debt activity — (3.8 ) (0.2 ) (0.4 ) — (4.4 ) Employee stock option exercises — 0.4 — — — 0.4 Purchase of treasury stock (2.7 ) — — — — (2.7 ) Intercompany activity 2.7 (2.7 ) — 18.0 (18.0 ) — Net cash provided by (used in) financing activities — (6.1 ) (0.2 ) 17.6 (18.0 ) (6.7 ) Effect of exchange rate changes on cash — — — (4.2 ) — (4.2 ) Net increase (decrease) in cash and cash equivalents — 57.2 — (5.1 ) — 52.1 Cash and cash equivalents at beginning of period — 69.7 — 179.5 — 249.2 Cash and cash equivalents at end of period $ — $ 126.9 $ — $ 174.4 $ — $ 301.3

Organization and Basis of Pre19

Organization and Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
New Accounting Pronouncements, Policy [Policy Text Block]	Effect of New Accounting Standards On March 31, 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2016-09 - Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. The update is intended to simplify the current guidance for stock-based compensation for a range of issues including: the timing of income statement impact for tax benefits or deficiencies in excess of compensation cost, the classification of tax-related cash flows resulting from share based payments, the allowable threshold for tax withholding without resulting in liability award classification, and a policy election for estimating forfeiture rates or recognizing forfeitures as they occur. This guidance becomes effective at the beginning of our 2017 fiscal year, however as permitted, we plan to early adopt this guidance in the fourth quarter of 2016. The guidance requires a retrospective, modified-retrospective, or prospective transition method depending on the applicable section of the ASU. We estimate the effect of implementing this ASU on our Consolidated Balance Sheet would increase our deferred tax assets and retained earnings by approximately $5.1 million as of January 1, 2016, using the modified-retrospective transition method, for the cumulative-effect adjustment of excess tax benefits that were not previously recognized because the related tax deduction had not reduced current taxes payable. We have evaluated the aspects of this new guidance and, other than this one-time increase in deferred tax assets and retained earnings, the adoption of this ASU will not have a material impact on our accounting for share-based payments. On February 25, 2016, the FASB issued ASU 2016-02 - Leases (Topic 842), which supersedes the existing lease accounting guidance and establishes new criteria for recognizing lease assets and liabilities. The most significant impact of the update, to AAM, is that a lessee will be required to recognize a "right-of-use" asset and lease liability for operating lease agreements that were not previously included on the balance sheet under the existing lease guidance. A lessee will be permitted to make a policy election, excluding recognition of the right-of-use asset and associated liability for lease terms of 12 months or less. Expense recognition in the statement of income along with cash flow statement classification for both financing (capital) and operating leases under the new standard will not be significantly changed from existing lease guidance. Accounting for leases as a lessor under the new guidance remains also largely unchanged. This guidance becomes effective for AAM at the beginning of our 2019 fiscal year and requires transition under a modified retrospective method. We are currently assessing the impact that this standard will have on our condensed consolidated financial statements. On May 1, 2015, the FASB issued ASU 2015-07 - Fair Value Measurement (Topic 820): Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (or Its Equivalent) , which changes the disclosure requirements for investments in certain entities that calculate net asset value (NAV) per share. Under current accounting standards entities are permitted to estimate the fair value of certain investments using the investment's NAV as a practical expedient. The current disclosure guidance also permits entities to disclose the investment at NAV in the fair value hierarchy table as either Level 2 or Level 3, based upon certain criteria. The measurement basis utilizing NAV is different than the measurement criteria of all other investments which utilize inputs to calculate fair value. Due to this inconsistency, the FASB issued this ASU which prohibits entities from categorizing investments measured at NAV within the fair value hierarchy. Other than the change in presentation, which requires retrospective application, the adoption of this new guidance will not have an impact on our condensed consolidated financial statements. AAM adopted this policy on January 1, 2016. In 2014, the FASB issued ASU 2014-09 - Revenue from Contracts with Customers (Topic 606) , which outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The guidance is based on the principle that an entity should recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments and assets recognized from costs incurred to fulfill a contract. Entities have the option of using either a full retrospective or a modified retrospective approach for the adoption of the new standard. On March 17, 2016, the FASB issued ASU 2016-08 - Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross Versus Net), to further clarify the new standard's guidance on identifying gross versus net reporting in the context of a contract. Based on the clarification, an entity should analyze the principal versus agent relationship for each specified good or service within a contract. On April 14, 2016, the FASB issued ASU 2016-10 - Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing, which better articulates the principle for determining whether promised goods or services are separately identifiable in the context of the contract. The guidance also excludes from an entity's performance obligation analysis, the requirement to assess certain promised contract goods and services deemed immaterial in the context of the contract. On May 9, 2016, the FASB issued ASU 2016-12 - Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients , which addresses improvements to the guidance on collectibility, non-cash consideration, and completed contracts at transition. The update also provides a practical expedient for contract modifications at transition and a policy election related to the presentation of sales taxes and other similar taxes collected from customers. On August 12, 2015, the FASB issued ASU 2015-14 - Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date , to formally defer the initial standard's effective date by one-year, making this guidance effective for AAM at the beginning of our 2018 fiscal year. We are currently assessing the impact that this standard will have on our condensed consolidated financial statements.
Authorized Share Repurchase Program [Policy Text Block]	Share Repurchase Program In the second quarter of 2016, AAM's Board of Directors authorized a share repurchase program of up to $100 million of AAM's common shares through December 31, 2018 as part of AAM's overall capital allocation strategy. The repurchase of shares may be made in the open market or in privately negotiated transactions and will be funded through available cash balances and cash flow from operations. The timing and amount of any share repurchases will be determined based on market and economic conditions, share price, alternative uses of capital and other factors. During the second quarter of 2016, we completed an initial share repurchase of 100,000 shares for $1.5 million under the authorized share repurchase program.

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 30, 2016
Inventory Disclosure [Abstract]
Schedule of Inventory, Current [Table Text Block]	Inventories consist of the following: June 30, 2016 December 31, 2015 (in millions) Raw materials and work-in-progress $ 221.3 $ 228.7 Finished goods 34.2 31.1 Gross inventories 255.5 259.8 Inventory valuation reserves (28.6 ) (29.3 ) Inventories, net $ 226.9 $ 230.5

Long-Term Debt (Tables)

Long-Term Debt (Tables)	6 Months Ended
	Jun. 30, 2016
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments [Table Text Block]	Long-term debt consists of the following: June 30, 2016 December 31, 2015 (in millions) Revolving Credit Facility $ — $ — 7.75% Notes 200.0 200.0 6.625% Notes 550.0 550.0 6.25% Notes 400.0 400.0 5.125% Notes 200.0 200.0 Foreign credit facilities 64.6 38.0 Capital lease obligations 5.3 5.6 Total debt 1,419.9 1,393.6 Less: Current portion of long-term debt 3.4 3.3 Long-term debt 1,416.5 1,390.3 Less: Debt issuance costs 13.2 14.6 Long-term debt, net $ 1,403.3 $ 1,375.7

Fair Value (Tables)

Fair Value (Tables)	6 Months Ended
	Jun. 30, 2016
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	The estimated fair value of our financial assets and liabilities that are recognized at fair value on a recurring basis, using available market information and other observable data, are as follows: June 30, 2016 December 31, 2015 Carrying Amount Fair Value Carrying Amount Fair Value Input (in millions) Balance Sheet Classification Cash equivalents $ 97.7 $ 97.7 $ 61.7 $ 61.7 Level 1 Currency forward contracts - Prepaid expenses and other Nondesignated currency forward contracts 0.4 0.4 0.2 0.2 Level 2 Currency forward contracts - Other assets and deferred charges Cash flow hedges 0.4 0.4 — — Level 2 Currency forward contracts - Accrued expenses and other Cash flow hedges 8.8 8.8 7.5 7.5 Level 2 Nondesignated currency forward contracts 1.3 1.3 1.9 1.9 Level 2 Currency forward contracts - Postretirement benefits and other long-term liabilities Cash flow hedges 7.3 7.3 5.9 5.9 Level 2
Fair Value, Financial Instruments not Carried at Fair Value [Table Text Block]	We estimated the fair value of the amounts outstanding on our debt using available market information and other observable data, to be as follows: June 30, 2016 December 31, 2015 Carrying Amount Fair Value Carrying Amount Fair Value Input (in millions) Revolving Credit Facility $ — $ — $ — $ — Level 2 7.75% Notes 200.0 222.0 200.0 218.5 Level 2 6.625% Notes 550.0 578.9 550.0 574.8 Level 2 6.25% Notes 400.0 416.0 400.0 415.0 Level 2 5.125% Notes 200.0 203.5 200.0 202.0 Level 2

Derivatives (Tables)

Derivatives (Tables)	6 Months Ended
	Jun. 30, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance [Table Text Block]	The following table summarizes the reclassification of pre-tax derivative losses into net income from accumulated other comprehensive loss for those derivative instruments designated as cash flow hedges under Accounting Standards Codification 815 - Derivatives and Hedging (ASC 815): Loss Reclassified During Loss Expected to Location of Loss Three Months Ended Six Months Ended be Reclassified Reclassified into June 30, June 30, During the Net Income 2016 2015 2016 2015 Next 12 Months (in millions) Currency forward contracts Cost of Goods Sold $ (2.3 ) $ (2.3 ) $ (4.3 ) $ (3.8 ) $ (8.8 ) The following table summarizes the amount and location of losses recognized in the Condensed Consolidated Statements of Income for those derivative instruments not designated as hedging instruments under ASC 815: Loss Recognized During Location of Loss Three Months Ended Six Months Ended Recognized in June 30, June 30, Net Income 2016 2015 2016 2015 (in millions) Currency forward contracts Cost of Goods Sold $ (2.2 ) $ (1.0 ) $ (2.7 ) $ (2.0 ) Currency forward contracts Other Income, Net — (0.3 ) (0.7 ) (0.3 )

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	6 Months Ended
	Jun. 30, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Schedule of Net Benefit (Credits) Costs [Table Text Block]	The components of net periodic benefit cost (credit) are as follows: Pension Benefits Three Months Ended Six Months Ended June 30, June 30, 2016 2015 2016 2015 (in millions) Service cost $ 0.8 $ 0.8 $ 1.5 $ 1.6 Interest cost 7.3 7.2 14.6 14.4 Expected asset return (10.7 ) (10.6 ) (21.4 ) (21.2 ) Amortized loss 1.4 1.3 2.8 3.0 Net periodic benefit credit $ (1.2 ) $ (1.3 ) $ (2.5 ) $ (2.2 ) Other Postretirement Benefits Three Months Ended Six Months Ended June 30, June 30, 2016 2015 2016 2015 (in millions) Service cost $ 0.1 $ 0.1 $ 0.2 $ 0.2 Interest cost 3.5 3.8 7.0 7.6 Amortized loss 0.1 0.2 0.2 0.4 Amortized prior service credit (0.6 ) (0.7 ) (1.3 ) (1.4 ) Net periodic benefit cost $ 3.1 $ 3.4 $ 6.1 $ 6.8

Product Warranties (Tables)

Product Warranties (Tables)	6 Months Ended
	Jun. 30, 2016
Product Warranties Disclosures [Abstract]
Schedule of Product Warranty Liability [Table Text Block]	The following table provides a reconciliation of changes in the product warranty liability: Three Months Ended Six Months Ended June 30, June 30, 2016 2015 2016 2015 (in millions) Beginning balance $ 37.0 $ 17.9 $ 36.6 $ 12.4 Accruals 4.1 5.0 8.0 9.5 Payments (3.2 ) (0.4 ) (3.7 ) (0.6 ) Adjustment to prior period accruals — 0.8 (3.1 ) 2.2 Foreign currency translation — (0.1 ) 0.1 (0.3 ) Ending balance $ 37.9 $ 23.2 $ 37.9 $ 23.2

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2016
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	The following table sets forth the computation of our basic and diluted EPS available to shareholders of common stock (excluding participating securities): Three Months Ended Six Months Ended June 30, June 30, 2016 2015 2016 2015 (in millions, except per share data) Numerator Net income $ 71.0 $ 58.6 $ 132.1 $ 111.8 Less: Net income attributable to participating securities (1.7 ) (1.4 ) (3.0 ) (2.6 ) Net income attributable to common shareholders - Basic $ 69.3 $ 57.2 $ 129.1 $ 109.2 Undistributed earnings reallocated to common shareholders under two step dilutive method — — — — Net income attributable to common shareholders - Dilutive $ 69.3 $ 57.2 $ 129.1 $ 109.2 Denominators Basic common shares outstanding - Weighted-average shares outstanding 78.3 77.8 78.1 77.7 Less: Participating securities (1.8 ) (1.9 ) (1.8 ) (1.9 ) Weighted-average common shares outstanding 76.5 75.9 76.3 75.8 Effect of dilutive securities - Dilutive stock-based compensation 0.4 0.4 0.4 0.4 Diluted shares outstanding - Adjusted weighted-average shares after assumed conversions 76.9 76.3 76.7 76.2 Basic EPS $ 0.91 $ 0.75 $ 1.69 $ 1.44 Diluted EPS $ 0.90 $ 0.75 $ 1.68 $ 1.43 Certain exercisable stock options were excluded from the computations of diluted EPS because the exercise price of these options was greater than the average period market prices. The number of stock options outstanding, which were not included in the calculation of diluted EPS, was 0.2 million at both June 30, 2016 and June 30, 2015 . The exercise price related to the excluded exercisable stock options was $26.02 at both June 30, 2016 and June 30, 2015 .

Reclassifications out of Accu27

Reclassifications out of Accumulated Other Comprehensive Income (Loss) (Tables)	6 Months Ended
	Jun. 30, 2016
Reclassifications out of Accumulated Other Comprehensive Income (Loss) [Abstract]
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]	Reclassification adjustments and other activity impacting accumulated other comprehensive income (loss) during the three months ended June 30, 2016 and June 30, 2015 are as follows (in millions) : Defined Benefit Plans Foreign Currency Translation Adjustments Unrecognized Loss on Cash Flow Hedges Total Balance at March 31, 2016 $ (219.7 ) $ (104.2 ) $ (10.0 ) $ (333.9 ) Other comprehensive income (loss) before reclassifications — 0.8 (8.0 ) (7.2 ) Income tax effect of other comprehensive income (loss) before reclassifications — — — — Amounts reclassified from accumulated other comprehensive loss 0.9 (a) — 2.3 (b) 3.2 Income tax benefit reclassified into net income (0.4 ) — — (0.4 ) Net current period other comprehensive income (loss) 0.5 0.8 (5.7 ) (4.4 ) Balance at June 30, 2016 $ (219.2 ) $ (103.4 ) $ (15.7 ) $ (338.3 ) Defined Benefit Plans Foreign Currency Translation Adjustments Unrecognized Loss on Cash Flow Hedges Total Balance at March 31, 2015 $ (236.7 ) $ (80.4 ) $ (7.9 ) $ (325.0 ) Other comprehensive income (loss) before reclassifications — 3.0 (3.5 ) (0.5 ) Income tax effect of other comprehensive income (loss) before reclassifications — — — — Amounts reclassified from accumulated other comprehensive loss 1.3 (a) — 2.3 (b) 3.6 Income tax benefit reclassified into net income (0.4 ) — — (0.4 ) Net current period other comprehensive income (loss) 0.9 3.0 (1.2 ) 2.7 Balance at June 30, 2015 $ (235.8 ) $ (77.4 ) $ (9.1 ) $ (322.3 ) (a) The amount reclassified from AOCI included $1.2 million in cost of goods sold (COGS) and $(0.3) million in selling, general & administrative expenses (SG&A) for the three months ended June 30, 2016 and $1.5 million in COGS and $(0.2) million in SG&A for the three months ended June 30, 2015. (b) The amounts reclassified from AOCI are included in COGS. Reclassification adjustments and other activity impacting accumulated other comprehensive income (loss) during the six months ended June 30, 2016 and June 30, 2015 are as follows (in millions) : Defined Benefit Plans Foreign Currency Translation Adjustments Unrecognized Loss on Cash Flow Hedges Total Balance at December 31, 2015 $ (223.9 ) $ (119.2 ) $ (13.4 ) $ (356.5 ) Other comprehensive income (loss) before reclassifications 5.7 15.8 (6.6 ) 14.9 Income tax effect of other comprehensive income (loss) before reclassifications (2.0 ) — — (2.0 ) Amounts reclassified from accumulated other comprehensive loss 1.7 (a) — 4.3 (b) 6.0 Income tax benefit reclassified into net income (0.7 ) — — (0.7 ) Net current period other comprehensive income (loss) 4.7 15.8 (2.3 ) 18.2 Balance at June 30, 2016 $ (219.2 ) $ (103.4 ) $ (15.7 ) $ (338.3 ) Defined Benefit Plans Foreign Currency Translation Adjustments Unrecognized Loss on Cash Flow Hedges Total Balance at December 31, 2014 $ (240.6 ) $ (48.9 ) $ (7.4 ) $ (296.9 ) Other comprehensive income (loss) before reclassifications 4.7 (28.5 ) (5.5 ) (29.3 ) Income tax effect of other comprehensive income (loss) before reclassifications (1.6 ) — — (1.6 ) Amounts reclassified from accumulated other comprehensive loss 2.5 (a) — 3.8 (b) 6.3 Income tax benefit reclassified into net income (0.8 ) — — (0.8 ) Net current period other comprehensive income (loss) 4.8 (28.5 ) (1.7 ) (25.4 ) Balance at June 30, 2015 $ (235.8 ) $ (77.4 ) $ (9.1 ) $ (322.3 ) (a) The amount reclassified from AOCI included $2.3 million in COGS and $(0.6) million in SG&A for the six months ended June 30, 2016 and $2.9 million in COGS and $(0.4) million in SG&A for the six months ended June 30, 2015. (b) The amounts reclassified from AOCI are included in COGS.

Supplemental Guarantor Conden28

Supplemental Guarantor Condensed Consolidating Financial Statements (Tables)	6 Months Ended
	Jun. 30, 2016
Supplemental Guarantor Condensed Consolidating Financial Statements [Abstract]
Supplemental Guarantor Consolidating Income Statement [Table Text Block]	Condensed Consolidating Statements of Income Three Months Ended June 30, (in millions) Holdings AAM Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Elims Consolidated 2016 Net sales External $ — $ 308.4 $ 56.7 $ 660.3 $ — $ 1,025.4 Intercompany — 2.8 63.3 4.1 (70.2 ) — Total net sales — 311.2 120.0 664.4 (70.2 ) 1,025.4 Cost of goods sold — 291.8 96.9 515.5 (70.2 ) 834.0 Gross profit — 19.4 23.1 148.9 — 191.4 Selling, general and administrative expenses — 70.2 — 9.7 — 79.9 Operating income (loss) — (50.8 ) 23.1 139.2 — 111.5 Non-operating income (expense), net — (23.5 ) 2.5 1.2 — (19.8 ) Income (loss) before income taxes — (74.3 ) 25.6 140.4 — 91.7 Income tax expense — 13.2 0.1 7.4 — 20.7 Earnings (loss) from equity in subsidiaries 71.0 86.3 (11.3 ) — (146.0 ) — Net income (loss) before royalties 71.0 (1.2 ) 14.2 133.0 (146.0 ) 71.0 Royalties — 72.2 — (72.2 ) — — Net income after royalties 71.0 71.0 14.2 60.8 (146.0 ) 71.0 Other comprehensive income (loss), net of tax (4.4 ) (4.4 ) 6.5 0.4 (2.5 ) (4.4 ) Comprehensive income $ 66.6 $ 66.6 $ 20.7 $ 61.2 $ (148.5 ) $ 66.6 Holdings AAM Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Elims Consolidated 2015 Net sales External $ — $ 298.7 $ 56.7 $ 648.6 $ — $ 1,004.0 Intercompany — 2.4 65.9 5.3 (73.6 ) — Total net sales — 301.1 122.6 653.9 (73.6 ) 1,004.0 Cost of goods sold — 292.7 99.7 520.7 (73.6 ) 839.5 Gross profit — 8.4 22.9 133.2 — 164.5 Selling, general and administrative expenses — 60.1 — 10.5 — 70.6 Operating income (loss) — (51.7 ) 22.9 122.7 — 93.9 Non-operating income (expense), net — (25.3 ) 2.8 0.1 — (22.4 ) Income (loss) before income taxes — (77.0 ) 25.7 122.8 — 71.5 Income tax expense — 7.5 0.1 5.3 — 12.9 Earnings (loss) from equity in subsidiaries 58.6 81.6 (3.4 ) — (136.8 ) — Net income (loss) before royalties 58.6 (2.9 ) 22.2 117.5 (136.8 ) 58.6 Royalties — 61.5 — (61.5 ) — — Net income after royalties 58.6 58.6 22.2 56.0 (136.8 ) 58.6 Other comprehensive income (loss), net of tax 2.7 2.7 (0.2 ) (0.3 ) (2.2 ) 2.7 Comprehensive income $ 61.3 $ 61.3 $ 22.0 $ 55.7 $ (139.0 ) $ 61.3 Condensed Consolidating Statements of Income Six Months Ended June 30, (in millions) Holdings AAM Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Elims Consolidated 2016 Net sales External $ — $ 591.6 $ 111.5 $ 1,291.5 $ — $ 1,994.6 Intercompany — 4.4 123.0 7.8 (135.2 ) — Total net sales — 596.0 234.5 1,299.3 (135.2 ) 1,994.6 Cost of goods sold — 568.1 189.4 1,006.9 (135.2 ) 1,629.2 Gross profit — 27.9 45.1 292.4 — 365.4 Selling, general and administrative expenses — 137.7 — 17.8 — 155.5 Operating income (loss) — (109.8 ) 45.1 274.6 — 209.9 Non-operating income (expense), net — (47.8 ) 5.5 0.5 — (41.8 ) Income (loss) before income taxes — (157.6 ) 50.6 275.1 — 168.1 Income tax expense — 21.0 0.2 14.8 — 36.0 Earnings (loss) from equity in subsidiaries 132.1 179.2 (20.9 ) — (290.4 ) — Net income before royalties 132.1 0.6 29.5 260.3 (290.4 ) 132.1 Royalties — 131.5 — (131.5 ) — — Net income after royalties 132.1 132.1 29.5 128.8 (290.4 ) 132.1 Other comprehensive income, net of tax 18.2 18.2 22.2 20.2 (60.6 ) 18.2 Comprehensive income $ 150.3 $ 150.3 $ 51.7 $ 149.0 $ (351.0 ) $ 150.3 Holdings AAM Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Elims Consolidated 2015 Net sales External $ — $ 573.6 $ 113.9 $ 1,285.6 $ — $ 1,973.1 Intercompany — 5.5 130.3 9.9 (145.7 ) — Total net sales — 579.1 244.2 1,295.5 (145.7 ) 1,973.1 Cost of goods sold — 563.6 200.3 1,037.6 (145.7 ) 1,655.8 Gross profit — 15.5 43.9 257.9 — 317.3 Selling, general and administrative expenses — 119.6 — 19.5 — 139.1 Operating income (loss) — (104.1 ) 43.9 238.4 — 178.2 Non-operating income (expense), net — (50.7 ) 5.1 1.3 — (44.3 ) Income (loss) before income taxes — (154.8 ) 49.0 239.7 — 133.9 Income tax expense (benefit) — 12.0 (0.3 ) 10.4 — 22.1 Earnings (loss) from equity in subsidiaries 111.8 156.5 (9.4 ) — (258.9 ) — Net income (loss) before royalties 111.8 (10.3 ) 39.9 229.3 (258.9 ) 111.8 Royalties — 122.1 — (122.1 ) — — Net income after royalties 111.8 111.8 39.9 107.2 (258.9 ) 111.8 Other comprehensive loss, net of tax (25.4 ) (25.4 ) (27.2 ) (29.0 ) 81.6 (25.4 ) Comprehensive income $ 86.4 $ 86.4 $ 12.7 $ 78.2 $ (177.3 ) $ 86.4
Supplemental Guarantor Consolidating Balance Sheet [Table Text Block]	Condensed Consolidating Balance Sheets (in millions) Holdings AAM Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Elims Consolidated June 30, 2016 Assets Current assets Cash and cash equivalents $ — $ 169.1 $ — $ 219.3 $ — $ 388.4 Accounts receivable, net — 159.2 28.2 454.3 — 641.7 Intercompany receivables — 296.5 297.0 9.1 (602.6 ) — Inventories, net — 53.7 28.0 145.2 — 226.9 Prepaid expenses and other — 24.1 0.4 52.9 — 77.4 Total current assets — 702.6 353.6 880.8 (602.6 ) 1,334.4 Property, plant and equipment, net — 213.0 95.4 772.3 — 1,080.7 Goodwill — — 147.8 6.6 — 154.4 Intercompany notes and accounts receivable — 346.9 248.7 — (595.6 ) — Other assets and deferred charges — 653.8 42.1 167.3 — 863.2 Investment in subsidiaries 783.3 1,487.6 — — (2,270.9 ) — Total assets $ 783.3 $ 3,403.9 $ 887.6 $ 1,827.0 $ (3,469.1 ) $ 3,432.7 Liabilities and Stockholders’ Equity Current liabilities Current portion of long-term debt $ — $ — $ — $ 3.4 $ — $ 3.4 Accounts payable — 146.6 43.5 313.7 — 503.8 Intercompany payables — 293.9 160.3 148.4 (602.6 ) — Accrued expenses and other — 123.0 4.7 117.0 — 244.7 Total current liabilities — 563.5 208.5 582.5 (602.6 ) 751.9 Intercompany notes and accounts payable 325.9 — 26.1 243.6 (595.6 ) — Long-term debt, net — 1,337.8 4.3 61.2 — 1,403.3 Investment in subsidiaries obligation — — 105.9 — (105.9 ) — Other long-term liabilities — 719.3 0.5 100.3 — 820.1 Total liabilities 325.9 2,620.6 345.3 987.6 (1,304.1 ) 2,975.3 Total stockholders’ equity 457.4 783.3 542.3 839.4 (2,165.0 ) 457.4 Total liabilities and stockholders’ equity $ 783.3 $ 3,403.9 $ 887.6 $ 1,827.0 $ (3,469.1 ) $ 3,432.7 Holdings AAM Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Elims Consolidated December 31, 2015 Assets Current assets Cash and cash equivalents $ — $ 52.0 $ — $ 230.5 $ — $ 282.5 Accounts receivable, net — 127.2 19.7 392.2 — 539.1 Intercompany receivables — 311.8 249.7 9.4 (570.9 ) — Inventories, net — 59.8 31.1 139.6 — 230.5 Prepaid expenses and other — 30.4 0.5 41.2 — 72.1 Total current assets — 581.2 301.0 812.9 (570.9 ) 1,124.2 Property, plant and equipment, net — 214.1 91.9 740.2 — 1,046.2 Goodwill — — 147.8 6.6 — 154.4 Intercompany notes and accounts receivable — 393.5 252.2 — (645.7 ) — Other assets and deferred charges — 683.6 41.4 152.9 — 877.9 Investment in subsidiaries 622.3 1,315.9 — — (1,938.2 ) — Total assets $ 622.3 $ 3,188.3 $ 834.3 $ 1,712.6 $ (3,154.8 ) $ 3,202.7 Liabilities and Stockholders’ Equity Current liabilities Current portion of long-term debt $ — $ — $ — $ 3.3 $ — $ 3.3 Accounts payable — 103.0 35.8 273.9 — 412.7 Intercompany payables — 248.7 154.9 167.3 (570.9 ) — Accrued expenses and other — 134.2 4.1 144.9 — 283.2 Total current liabilities — 485.9 194.8 589.4 (570.9 ) 699.2 Intercompany notes and accounts payable 320.8 10.3 — 314.6 (645.7 ) — Long-term debt, net — 1,336.5 4.5 34.7 — 1,375.7 Investment in subsidiaries obligation — — 111.7 — (111.7 ) — Other long-term liabilities — 733.3 0.5 92.5 — 826.3 Total liabilities 320.8 2,566.0 311.5 1,031.2 (1,328.3 ) 2,901.2 Total stockholders’ equity 301.5 622.3 522.8 681.4 (1,826.5 ) 301.5 Total liabilities and stockholders’ equity $ 622.3 $ 3,188.3 $ 834.3 $ 1,712.6 $ (3,154.8 ) $ 3,202.7
Supplemental Guarantor Consolidating Statement of Cash Flows [Table Text Block]	Condensed Consolidating Statements of Cash Flows Six Months Ended June 30, (in millions) Holdings AAM Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Elims Consolidated 2016 Net cash provided by operating activities $ — $ 140.2 $ 11.6 $ 31.7 $ — $ 183.5 Investing activities Purchases of property, plant and equipment — (18.8 ) (9.6 ) (77.3 ) — (105.7 ) Proceeds from sale of property, plant and equipment — — 0.2 0.4 — 0.6 Proceeds from government grants — — — 2.8 — 2.8 Final distribution of Reserve Yield Plus Fund — 1.0 — — — 1.0 Intercompany activity — — (2.0 ) — 2.0 — Net cash used in investing activities — (17.8 ) (11.4 ) (74.1 ) 2.0 (101.3 ) Financing activities Net debt activity — (0.4 ) (0.2 ) 26.4 — 25.8 Employee stock option exercises — 0.1 — — — 0.1 Purchase of treasury stock (5.0 ) — — — — (5.0 ) Intercompany activity 5.0 (5.0 ) — 2.0 (2.0 ) — Net cash provided by (used in) financing activities — (5.3 ) (0.2 ) 28.4 (2.0 ) 20.9 Effect of exchange rate changes on cash — — — 2.8 — 2.8 Net increase (decrease) in cash and cash equivalents — 117.1 — (11.2 ) — 105.9 Cash and cash equivalents at beginning of period — 52.0 — 230.5 — 282.5 Cash and cash equivalents at end of period $ — $ 169.1 $ — $ 219.3 $ — $ 388.4 Holdings AAM Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Elims Consolidated 2015 Net cash provided by operating activities $ — $ 80.7 $ 23.1 $ 50.5 $ — $ 154.3 Investing activities Purchases of property, plant and equipment — (17.5 ) (4.9 ) (69.0 ) — (91.4 ) Proceeds from sale of property, plant and equipment — 0.1 — — — 0.1 Intercompany activity — — (18.0 ) — 18.0 — Net cash used in investing activities — (17.4 ) (22.9 ) (69.0 ) 18.0 (91.3 ) Financing activities Net debt activity — (3.8 ) (0.2 ) (0.4 ) — (4.4 ) Employee stock option exercises — 0.4 — — — 0.4 Purchase of treasury stock (2.7 ) — — — — (2.7 ) Intercompany activity 2.7 (2.7 ) — 18.0 (18.0 ) — Net cash provided by (used in) financing activities — (6.1 ) (0.2 ) 17.6 (18.0 ) (6.7 ) Effect of exchange rate changes on cash — — — (4.2 ) — (4.2 ) Net increase (decrease) in cash and cash equivalents — 57.2 — (5.1 ) — 52.1 Cash and cash equivalents at beginning of period — 69.7 — 179.5 — 249.2 Cash and cash equivalents at end of period $ — $ 126.9 $ — $ 174.4 $ — $ 301.3

Effect of New Accounting Standa

Effect of New Accounting Standards (Details) - USD ($) $ in Millions	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings		$ 336.3	$ 204.2
New Accounting Pronouncement, Early Adoption, Effect [Member] | Scenario, Forecast [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred Tax Assets, Net	$ 5.1
Retained earnings	$ 5.1

Organization and Basis of Pre30

Organization and Basis of Presentation Share Repurchase Program (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2016	May 05, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Stock Repurchase Program, Authorized Amount		$ 100
Treasury Stock, Shares, Acquired	100,000
Treasury Stock, Value, Acquired, Cost Method	$ 1.5

Inventories (Details)

Inventories (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Inventory [Line Items]
Raw materials and work-in-progress	$ 221.3	$ 228.7
Finished goods	34.2	31.1
Gross inventories	255.5	259.8
Inventory valuation reserves	(28.6)	(29.3)
Inventories, net	$ 226.9	$ 230.5

Schedule of Long-Term Debt (Det

Schedule of Long-Term Debt (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	$ 1,419.9	$ 1,393.6
Current portion of long-term debt	3.4	3.3
Long-term debt	1,416.5	1,390.3
Long-term debt, net	1,403.3	1,375.7
Total Debt Instruments excluding Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Unamortized Debt Issuance Expense	13.2	14.6
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding	0	0
Unsecured Debt [Member] | 7.75% Notes [Member]
Debt Instrument [Line Items]
Notes payable	200	200
Unsecured Debt [Member] | 6.625% Notes [Member]
Debt Instrument [Line Items]
Notes payable	550	550
Unsecured Debt [Member] | 6.25% Notes [Member]
Debt Instrument [Line Items]
Notes payable	400	400
Unsecured Debt [Member] | 5.125% Notes [Member]
Debt Instrument [Line Items]
Notes payable	200	200
Foreign Credit Facilities [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding	64.6	38
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Capital lease obligations	$ 5.3	$ 5.6

Long-Term Debt Narrative (Detai

Long-Term Debt Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Long-Term Debt Narrative [Line Items]
Long-term Debt, Weighted Average Interest Rate	6.60%	6.50%
Revolving Credit Facility [Member]
Long-Term Debt Narrative [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 523.5
Line of Credit Facility, Remaining Borrowing Capacity	513.1
Line of Credit Facility, Standby Letters of Credit Issued Against the Facility	10.4
Line of Credit Facility, Amount Outstanding	0	$ 0
Foreign Credit Facilities [Member]
Long-Term Debt Narrative [Line Items]
Line of Credit Facility, Amount Outstanding	64.6	$ 38
Debt Instrument, Unused Borrowing Capacity, Amount	$ 62.9

Fair Value of Assets and Liabil

Fair Value of Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents, at fair value	$ 97.7	$ 61.7
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents, at carrying value	97.7	61.7
Designated as Hedging Instrument [Member] | Other assets and deferred charges [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Currency forward contracts	0.4	0
Designated as Hedging Instrument [Member] | Other assets and deferred charges [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Currency forward contracts	0.4	0
Designated as Hedging Instrument [Member] | Accrued expenses and other [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Currency forward contracts	8.8	7.5
Designated as Hedging Instrument [Member] | Accrued expenses and other [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Currency forward contracts	8.8	7.5
Designated as Hedging Instrument [Member] | Postretirement benefits and other long-term liabilities [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Currency forward contracts	7.3	5.9
Designated as Hedging Instrument [Member] | Postretirement benefits and other long-term liabilities [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Currency forward contracts	7.3	5.9
Not Designated as Hedging Instrument [Member] | Prepaid expenses and other [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Currency forward contracts	0.4	0.2
Not Designated as Hedging Instrument [Member] | Prepaid expenses and other [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Currency forward contracts	0.4	0.2
Not Designated as Hedging Instrument [Member] | Accrued expenses and other [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Currency forward contracts	1.3	1.9
Not Designated as Hedging Instrument [Member] | Accrued expenses and other [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Currency forward contracts	$ 1.3	$ 1.9

Fair Value of Debt (Details)

Fair Value of Debt (Details) - Fair Value, Inputs, Level 2 [Member] - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Revolving Credit Facility [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Line of Credit Facility, Amount Outstanding	$ 0	$ 0
Revolving Credit Facility [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Line of Credit Facility, Amount Outstanding	0	0
7.75% Notes [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	200	200
7.75% Notes [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	222	218.5
6.625% Notes [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	550	550
6.625% Notes [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	578.9	574.8
6.25% Notes [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	400	400
6.25% Notes [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	416	415
5.125% Notes [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	200	200
5.125% Notes [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	$ 203.5	$ 202

Derivatives Narrative (Details)

Derivatives Narrative (Details) $ in Millions	Jun. 30, 2016USD ($)
Forward Contracts [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	$ 196.8

Schedule of Derivatives (Detail

Schedule of Derivatives (Details) - Forward Contracts [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2017
Other Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Description of Location of Loss on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments in Financial Statements			Other Income, Net
Derivative Instruments Not Designated as Hedging Instruments, Loss	$ 0	$ (0.3)	$ (0.7)	$ (0.3)
Cost of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Description of Location of Loss on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments in Financial Statements			Cost of Goods Sold
Derivative Instruments Not Designated as Hedging Instruments, Loss	(2.2)	(1)	$ (2.7)	(2)
Cost of Sales [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Income Statement Location Loss Reclassified from Accumulated OCI			Cost of Goods Sold
Derivative Instruments, Loss Reclassified from Accumulated OCI into Income, Effective Portion, Net	$ (2.3)	$ (2.3)	$ (4.3)	$ (3.8)
Cost of Sales [Member] | Cash Flow Hedging [Member] | Scenario, Forecast [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Cash flow hedge loss to be reclassified within twelve months					$ (8.8)

Schedule of Employee Benefit Pl

Schedule of Employee Benefit Plans Components of Net Periodic Benefit Cost (Credit) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 0.8	$ 0.8	$ 1.5	$ 1.6
Interest cost	7.3	7.2	14.6	14.4
Expected asset return	(10.7)	(10.6)	(21.4)	(21.2)
Amortized loss	1.4	1.3	2.8	3
Net periodic benefit credit	(1.2)	(1.3)	(2.5)	(2.2)
Other Postretirement Benefit Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	0.1	0.1	0.2	0.2
Interest cost	3.5	3.8	7	7.6
Amortized loss	0.1	0.2	0.2	0.4
Amortized prior service credit	(0.6)	(0.7)	(1.3)	(1.4)
Net periodic benefit cost	$ 3.1	$ 3.4	$ 6.1	$ 6.8

Employee Benefit Plans and Othe

Employee Benefit Plans and Other Postretirement Benefit Plans Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Pension Plan, Liabilities, Noncurrent		$ 100.7	$ 103.1
Other Postretirement Defined Benefit Plan, Liabilities, Noncurrent		$ 544.8	$ 559
Scenario, Forecast [Member] | Other Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plans, Estimated Future Employer Contributions in Current Fiscal Year	$ 16

Product Warranties (Details)

Product Warranties (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Product Warranty Rollforward
Beginning balance	$ 37	$ 17.9	$ 36.6	$ 12.4
Accruals	4.1	5	8	9.5
Payments	(3.2)	(0.4)	(3.7)	(0.6)
Adjustment to prior period accruals	0	0.8	(3.1)	2.2
Foreign currency translation	0	(0.1)	0.1	(0.3)
Ending balance	$ 37.9	$ 23.2	$ 37.9	$ 23.2

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2016	Dec. 31, 2015
Income tax expense	$ 20.7	$ 12.9	$ 36	$ 22.1
Effective income tax rate, continuing operations	22.60%	18.00%	21.40%	16.50%
Unrecognized tax benefit liability, including penalties and accrued interest	$ 29.6		$ 29.6			$ 48.5
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities			$ 26.1
Scenario, Forecast [Member]
Lower range of expected tax payments related to transfer pricing matters					$ 30
Upper range of expected payments related to transfer pricing matters					$ 40

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Numerator
Net income	$ 71	$ 58.6	$ 132.1	$ 111.8
Less: Net income attributable to participating securities	(1.7)	(1.4)	(3)	(2.6)
Net income attributable to common shareholders - Basic	69.3	57.2	129.1	109.2
Undistributed earnings reallocated to common shareholders under two step dilutive method	0	0	0	0
Net income attributable to common shareholders - Dilutive	$ 69.3	$ 57.2	$ 129.1	$ 109.2
Denominators
Basic - Weighted-average shares outstanding	78.3	77.8	78.1	77.7
Basic - Less: Participating securities	(1.8)	(1.9)	(1.8)	(1.9)
Basic - Weighted-average common shares outstanding	76.5	75.9	76.3	75.8
Effect of dilutive securities - dilutive stock-based compensation	0.4	0.4	0.4	0.4
Diluted - Adjusted weighted-average shares after assumed conversions	76.9	76.3	76.7	76.2
Basic EPS	$ 0.91	$ 0.75	$ 1.69	$ 1.44
Diluted EPS	$ 0.90	$ 0.75	$ 1.68	$ 1.43

Earnings Per Share Narrative (D

Earnings Per Share Narrative (Details) - $ / shares shares in Millions	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Earnings Per Share [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0.2	0.2
Earnings Per Share, Range of Exercise Prices of Stock Options Excluded from the Calculation of Diluted EPS, Upper End of Range	$ 26.02	$ 26.02
Earnings Per Share, Range of Exercise Prices of Stock Options Excluded from the Calculation of Diluted EPS, Lower End of Range	$ 26.02	$ 26.02

Reclassifications out of Accu44

Reclassifications out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Defined benefit plans - Beginning balance	$ (219.7)	$ (236.7)	$ (223.9)	$ (240.6)
Defined benefit plans, other comprehensive income (loss), before reclassifications	0	0	5.7	4.7
Income tax effect of other comprehensive income (loss) before reclassifications	0	0	(2)	(1.6)
Defined benefit plans, amounts reclassified from accumulated other comprehensive loss	0.9	1.3	1.7	2.5
Income taxes reclassified into net income	(0.4)	(0.4)	(0.7)	(0.8)
Defined benefit plans, net current period other comprehensive income (loss)	0.5	0.9	4.7	4.8
Defined benefit plans - Ending balance	(219.2)	(235.8)	(219.2)	(235.8)
Foreign currency translation adjustments - Beginning balance	(104.2)	(80.4)	(119.2)	(48.9)
Foreign currency translation adjustments, other comprehensive income (loss) arising during period	0.8	3	15.8	(28.5)
Foreign currency translation adjustments, amounts reclassified from accumulated other comprehensive loss	0	0	0	0
Foreign currency translation adjustments, net current period other comprehensive income (loss)	0.8	3	15.8	(28.5)
Foreign currency translation adjustments - Ending balance	(103.4)	(77.4)	(103.4)	(77.4)
Unrecognized loss on cash flow hedges - Beginning balance	(10)	(7.9)	(13.4)	(7.4)
Unrecognized loss on cash flow hedges, other comprehensive income (loss) arising during period	(8)	(3.5)	(6.6)	(5.5)
Unrecognized loss on cash flow hedges, amounts reclassified from accumulated other comprehensive loss	2.3	2.3	4.3	3.8
Unrecognized loss on cash flow hedges, net current period other comprehensive income (loss)	(5.7)	(1.2)	(2.3)	(1.7)
Unrecognized loss on cash flow hedges - Ending balance	(15.7)	(9.1)	(15.7)	(9.1)
Accumulated other comprehensive income (loss), net of tax - Beginning balance	(333.9)	(325)	(356.5)	(296.9)
Other comprehensive income (loss) arising during period, total	(7.2)	(0.5)	14.9	(29.3)
Income tax effect of other comprehensive income (loss) before reclassifications	0	0	(2)	(1.6)
Amounts reclassified from other comprehensive loss, total	3.2	3.6	6	6.3
Income taxes reclassified into net income	(0.4)	(0.4)	(0.7)	(0.8)
Other comprehensive income (loss)	(4.4)	2.7	18.2	(25.4)
Accumulated other comprehensive income (loss), net of tax - Ending balance	$ (338.3)	$ (322.3)	$ (338.3)	$ (322.3)

Reclassifications out of Accu45

Reclassifications out of Accumulated Other Comprehensive Income (Loss) (Parenthetical) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Cost of Sales [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Defined benefit plans, amounts reclassified from accumulated other comprehensive income (loss)	$ 1.2	$ 1.5	$ 2.3	$ 2.9
Selling, General and Administrative Expenses [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Defined benefit plans, amounts reclassified from accumulated other comprehensive income (loss)	$ (0.3)	$ (0.2)	$ (0.6)	$ (0.4)

Supplemental Guarantor Conden46

Supplemental Guarantor Condensed Consolidating Financial Statements Supplemental Guarantor Condensed Consolidating Statements of Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Net sales
External	$ 1,025.4	$ 1,004	$ 1,994.6	$ 1,973.1
Intercompany	0	0	0	0
Total net sales	1,025.4	1,004	1,994.6	1,973.1
Cost of goods sold	834	839.5	1,629.2	1,655.8
Gross profit	191.4	164.5	365.4	317.3
Selling, general and administrative expenses	79.9	70.6	155.5	139.1
Operating Income (loss)	111.5	93.9	209.9	178.2
Non-operating income (expense), net	(19.8)	(22.4)	(41.8)	(44.3)
Income (loss) before income taxes	91.7	71.5	168.1	133.9
Income tax expense	20.7	12.9	36	22.1
Earnings (loss) from equity in subsidiaries	0	0	0	0
Net income (loss) before royalties	71	58.6	132.1	111.8
Royalties	0	0	0	0
Net income after royalties	71	58.6	132.1	111.8
Other comprehensive income (loss), net of tax	(4.4)	2.7	18.2	(25.4)
Comprehensive income	66.6	61.3	150.3	86.4
Holdings [Member]
Net sales
External	0	0	0	0
Intercompany	0	0	0	0
Total net sales	0	0	0	0
Cost of goods sold	0	0	0	0
Gross profit	0	0	0	0
Selling, general and administrative expenses	0	0	0	0
Operating Income (loss)	0	0	0	0
Non-operating income (expense), net	0	0	0	0
Income (loss) before income taxes	0	0	0	0
Income tax expense	0	0	0	0
Earnings (loss) from equity in subsidiaries	71	58.6	132.1	111.8
Net income (loss) before royalties	71	58.6	132.1	111.8
Royalties	0	0	0	0
Net income after royalties	71	58.6	132.1	111.8
Other comprehensive income (loss), net of tax	(4.4)	2.7	18.2	(25.4)
Comprehensive income	66.6	61.3	150.3	86.4
AAM Inc. [Member]
Net sales
External	308.4	298.7	591.6	573.6
Intercompany	2.8	2.4	4.4	5.5
Total net sales	311.2	301.1	596	579.1
Cost of goods sold	291.8	292.7	568.1	563.6
Gross profit	19.4	8.4	27.9	15.5
Selling, general and administrative expenses	70.2	60.1	137.7	119.6
Operating Income (loss)	(50.8)	(51.7)	(109.8)	(104.1)
Non-operating income (expense), net	(23.5)	(25.3)	(47.8)	(50.7)
Income (loss) before income taxes	(74.3)	(77)	(157.6)	(154.8)
Income tax expense	13.2	7.5	21	12
Earnings (loss) from equity in subsidiaries	86.3	81.6	179.2	156.5
Net income (loss) before royalties	(1.2)	(2.9)	0.6	(10.3)
Royalties	72.2	61.5	131.5	122.1
Net income after royalties	71	58.6	132.1	111.8
Other comprehensive income (loss), net of tax	(4.4)	2.7	18.2	(25.4)
Comprehensive income	66.6	61.3	150.3	86.4
Guarantor Subsidiaries [Member]
Net sales
External	56.7	56.7	111.5	113.9
Intercompany	63.3	65.9	123	130.3
Total net sales	120	122.6	234.5	244.2
Cost of goods sold	96.9	99.7	189.4	200.3
Gross profit	23.1	22.9	45.1	43.9
Selling, general and administrative expenses	0	0	0	0
Operating Income (loss)	23.1	22.9	45.1	43.9
Non-operating income (expense), net	2.5	2.8	5.5	5.1
Income (loss) before income taxes	25.6	25.7	50.6	49
Income tax expense	0.1	0.1	0.2	(0.3)
Earnings (loss) from equity in subsidiaries	(11.3)	(3.4)	(20.9)	(9.4)
Net income (loss) before royalties	14.2	22.2	29.5	39.9
Royalties	0	0	0	0
Net income after royalties	14.2	22.2	29.5	39.9
Other comprehensive income (loss), net of tax	6.5	(0.2)	22.2	(27.2)
Comprehensive income	20.7	22	51.7	12.7
Non-Guarantor Subsidiaries [Member]
Net sales
External	660.3	648.6	1,291.5	1,285.6
Intercompany	4.1	5.3	7.8	9.9
Total net sales	664.4	653.9	1,299.3	1,295.5
Cost of goods sold	515.5	520.7	1,006.9	1,037.6
Gross profit	148.9	133.2	292.4	257.9
Selling, general and administrative expenses	9.7	10.5	17.8	19.5
Operating Income (loss)	139.2	122.7	274.6	238.4
Non-operating income (expense), net	1.2	0.1	0.5	1.3
Income (loss) before income taxes	140.4	122.8	275.1	239.7
Income tax expense	7.4	5.3	14.8	10.4
Earnings (loss) from equity in subsidiaries	0	0	0	0
Net income (loss) before royalties	133	117.5	260.3	229.3
Royalties	(72.2)	(61.5)	(131.5)	(122.1)
Net income after royalties	60.8	56	128.8	107.2
Other comprehensive income (loss), net of tax	0.4	(0.3)	20.2	(29)
Comprehensive income	61.2	55.7	149	78.2
Consolidation, Eliminations [Member]
Net sales
External	0	0	0	0
Intercompany	(70.2)	(73.6)	(135.2)	(145.7)
Total net sales	(70.2)	(73.6)	(135.2)	(145.7)
Cost of goods sold	(70.2)	(73.6)	(135.2)	(145.7)
Gross profit	0	0	0	0
Selling, general and administrative expenses	0	0	0	0
Operating Income (loss)	0	0	0	0
Non-operating income (expense), net	0	0	0	0
Income (loss) before income taxes	0	0	0	0
Income tax expense	0	0	0	0
Earnings (loss) from equity in subsidiaries	(146)	(136.8)	(290.4)	(258.9)
Net income (loss) before royalties	(146)	(136.8)	(290.4)	(258.9)
Royalties	0	0	0	0
Net income after royalties	(146)	(136.8)	(290.4)	(258.9)
Other comprehensive income (loss), net of tax	(2.5)	(2.2)	(60.6)	81.6
Comprehensive income	$ (148.5)	$ (139)	$ (351)	$ (177.3)

Supplemental Guarantor Conden47

Supplemental Guarantor Condensed Consolidating Financial Statements Supplemental Guarantor Condensed Consolidating Balance Sheets (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2014
Current assets
Cash and cash equivalents	$ 388.4	$ 282.5	$ 301.3	$ 249.2
Accounts receivable, net	641.7	539.1
Intercompany receivables	0	0
Inventories, net	226.9	230.5
Prepaid expenses and other	77.4	72.1
Total current assets	1,334.4	1,124.2
Property, plant and equipment, net	1,080.7	1,046.2
Goodwill	154.4	154.4
Intercompany notes and accounts receivable	0	0
Other assets and deferred charges	863.2	877.9
Investment in subsidiaries	0	0
Total assets	3,432.7	3,202.7
Current liabilities
Current portion of long-term debt	3.4	3.3
Accounts payable	503.8	412.7
Intercompany payables	0	0
Accrued expenses and other	244.7	283.2
Total current liabilities	751.9	699.2
Intercompany notes and accounts payable	0	0
Long-term debt, net	1,403.3	1,375.7
Investment in Subsidiaries Obligation	0	0
Other long-term liabilities	820.1	826.3
Total liabilities	2,975.3	2,901.2
Total stockholders’ equity	457.4	301.5
Total liabilities and stockholders' equity	3,432.7	3,202.7
Holdings [Member]
Current assets
Cash and cash equivalents	0	0	0	0
Accounts receivable, net	0	0
Intercompany receivables	0	0
Inventories, net	0	0
Prepaid expenses and other	0	0
Total current assets	0	0
Property, plant and equipment, net	0	0
Goodwill	0	0
Intercompany notes and accounts receivable	0	0
Other assets and deferred charges	0	0
Investment in subsidiaries	783.3	622.3
Total assets	783.3	622.3
Current liabilities
Current portion of long-term debt	0	0
Accounts payable	0	0
Intercompany payables	0	0
Accrued expenses and other	0	0
Total current liabilities	0	0
Intercompany notes and accounts payable	325.9	320.8
Long-term debt, net	0	0
Investment in Subsidiaries Obligation	0	0
Other long-term liabilities	0	0
Total liabilities	325.9	320.8
Total stockholders’ equity	457.4	301.5
Total liabilities and stockholders' equity	783.3	622.3
AAM Inc. [Member]
Current assets
Cash and cash equivalents	169.1	52	126.9	69.7
Accounts receivable, net	159.2	127.2
Intercompany receivables	296.5	311.8
Inventories, net	53.7	59.8
Prepaid expenses and other	24.1	30.4
Total current assets	702.6	581.2
Property, plant and equipment, net	213	214.1
Goodwill	0	0
Intercompany notes and accounts receivable	346.9	393.5
Other assets and deferred charges	653.8	683.6
Investment in subsidiaries	1,487.6	1,315.9
Total assets	3,403.9	3,188.3
Current liabilities
Current portion of long-term debt	0	0
Accounts payable	146.6	103
Intercompany payables	293.9	248.7
Accrued expenses and other	123	134.2
Total current liabilities	563.5	485.9
Intercompany notes and accounts payable	0	10.3
Long-term debt, net	1,337.8	1,336.5
Investment in Subsidiaries Obligation	0	0
Other long-term liabilities	719.3	733.3
Total liabilities	2,620.6	2,566
Total stockholders’ equity	783.3	622.3
Total liabilities and stockholders' equity	3,403.9	3,188.3
Guarantor Subsidiaries [Member]
Current assets
Cash and cash equivalents	0	0	0	0
Accounts receivable, net	28.2	19.7
Intercompany receivables	297	249.7
Inventories, net	28	31.1
Prepaid expenses and other	0.4	0.5
Total current assets	353.6	301
Property, plant and equipment, net	95.4	91.9
Goodwill	147.8	147.8
Intercompany notes and accounts receivable	248.7	252.2
Other assets and deferred charges	42.1	41.4
Investment in subsidiaries	0	0
Total assets	887.6	834.3
Current liabilities
Current portion of long-term debt	0	0
Accounts payable	43.5	35.8
Intercompany payables	160.3	154.9
Accrued expenses and other	4.7	4.1
Total current liabilities	208.5	194.8
Intercompany notes and accounts payable	26.1	0
Long-term debt, net	4.3	4.5
Investment in Subsidiaries Obligation	105.9	111.7
Other long-term liabilities	0.5	0.5
Total liabilities	345.3	311.5
Total stockholders’ equity	542.3	522.8
Total liabilities and stockholders' equity	887.6	834.3
Non-Guarantor Subsidiaries [Member]
Current assets
Cash and cash equivalents	219.3	230.5	174.4	179.5
Accounts receivable, net	454.3	392.2
Intercompany receivables	9.1	9.4
Inventories, net	145.2	139.6
Prepaid expenses and other	52.9	41.2
Total current assets	880.8	812.9
Property, plant and equipment, net	772.3	740.2
Goodwill	6.6	6.6
Intercompany notes and accounts receivable	0	0
Other assets and deferred charges	167.3	152.9
Investment in subsidiaries	0	0
Total assets	1,827	1,712.6
Current liabilities
Current portion of long-term debt	3.4	3.3
Accounts payable	313.7	273.9
Intercompany payables	148.4	167.3
Accrued expenses and other	117	144.9
Total current liabilities	582.5	589.4
Intercompany notes and accounts payable	243.6	314.6
Long-term debt, net	61.2	34.7
Investment in Subsidiaries Obligation	0	0
Other long-term liabilities	100.3	92.5
Total liabilities	987.6	1,031.2
Total stockholders’ equity	839.4	681.4
Total liabilities and stockholders' equity	1,827	1,712.6
Consolidation, Eliminations [Member]
Current assets
Cash and cash equivalents	0	0	$ 0	$ 0
Accounts receivable, net	0	0
Intercompany receivables	(602.6)	(570.9)
Inventories, net	0	0
Prepaid expenses and other	0	0
Total current assets	(602.6)	(570.9)
Property, plant and equipment, net	0	0
Goodwill	0	0
Intercompany notes and accounts receivable	(595.6)	(645.7)
Other assets and deferred charges	0	0
Investment in subsidiaries	(2,270.9)	(1,938.2)
Total assets	(3,469.1)	(3,154.8)
Current liabilities
Current portion of long-term debt	0	0
Accounts payable	0	0
Intercompany payables	(602.6)	(570.9)
Accrued expenses and other	0	0
Total current liabilities	(602.6)	(570.9)
Intercompany notes and accounts payable	(595.6)	(645.7)
Long-term debt, net	0	0
Investment in Subsidiaries Obligation	(105.9)	(111.7)
Other long-term liabilities	0	0
Total liabilities	(1,304.1)	(1,328.3)
Total stockholders’ equity	(2,165)	(1,826.5)
Total liabilities and stockholders' equity	$ (3,469.1)	$ (3,154.8)

Supplemental Guarantor Conden48

Supplemental Guarantor Condensed Consolidating Financial Statements Supplemental Guarantor Condensed Consolidating Statements of Cash Flows (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Net cash provided by operating activities	$ 183.5	$ 154.3
Investing activities
Purchases of property, plant and equipment	(105.7)	(91.4)
Proceeds from sale of property, plant and equipment	0.6	0.1
Proceeds from government grants	2.8	0
Final distribution of Reserve Yield Plus Fund	1	0
Intercompany Activity - Investing	0	0
Net cash used in investing activities	(101.3)	(91.3)
Financing activities
Net debt activity	25.8	(4.4)
Employee stock option exercises	0.1	0.4
Purchase of treasury stock	(5)	(2.7)
Intercompany Activity - Financing	0	0
Net cash provided by (used in) financing activities	20.9	(6.7)
Effect of exchange rate changes on cash	2.8	(4.2)
Net increase (decrease) in cash and cash equivalents	105.9	52.1
Cash and cash equivalents at beginning of period	282.5	249.2
Cash and cash equivalents at end of period	388.4	301.3
Holdings [Member]
Net cash provided by operating activities	0	0
Investing activities
Purchases of property, plant and equipment	0	0
Proceeds from sale of property, plant and equipment	0	0
Proceeds from government grants	0
Final distribution of Reserve Yield Plus Fund	0
Intercompany Activity - Investing	0	0
Net cash used in investing activities	0	0
Financing activities
Net debt activity	0	0
Employee stock option exercises	0	0
Purchase of treasury stock	(5)	(2.7)
Intercompany Activity - Financing	5	2.7
Net cash provided by (used in) financing activities	0	0
Effect of exchange rate changes on cash	0	0
Net increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	0	0
AAM Inc. [Member]
Net cash provided by operating activities	140.2	80.7
Investing activities
Purchases of property, plant and equipment	(18.8)	(17.5)
Proceeds from sale of property, plant and equipment	0	0.1
Proceeds from government grants	0
Final distribution of Reserve Yield Plus Fund	1
Intercompany Activity - Investing	0	0
Net cash used in investing activities	(17.8)	(17.4)
Financing activities
Net debt activity	(0.4)	(3.8)
Employee stock option exercises	0.1	0.4
Purchase of treasury stock	0	0
Intercompany Activity - Financing	(5)	(2.7)
Net cash provided by (used in) financing activities	(5.3)	(6.1)
Effect of exchange rate changes on cash	0	0
Net increase (decrease) in cash and cash equivalents	117.1	57.2
Cash and cash equivalents at beginning of period	52	69.7
Cash and cash equivalents at end of period	169.1	126.9
Guarantor Subsidiaries [Member]
Net cash provided by operating activities	11.6	23.1
Investing activities
Purchases of property, plant and equipment	(9.6)	(4.9)
Proceeds from sale of property, plant and equipment	0.2	0
Proceeds from government grants	0
Final distribution of Reserve Yield Plus Fund	0
Intercompany Activity - Investing	(2)	(18)
Net cash used in investing activities	(11.4)	(22.9)
Financing activities
Net debt activity	(0.2)	(0.2)
Employee stock option exercises	0	0
Purchase of treasury stock	0	0
Intercompany Activity - Financing	0	0
Net cash provided by (used in) financing activities	(0.2)	(0.2)
Effect of exchange rate changes on cash	0	0
Net increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	0	0
Non-Guarantor Subsidiaries [Member]
Net cash provided by operating activities	31.7	50.5
Investing activities
Purchases of property, plant and equipment	(77.3)	(69)
Proceeds from sale of property, plant and equipment	0.4	0
Proceeds from government grants	2.8
Final distribution of Reserve Yield Plus Fund	0
Intercompany Activity - Investing	0	0
Net cash used in investing activities	(74.1)	(69)
Financing activities
Net debt activity	26.4	(0.4)
Employee stock option exercises	0	0
Purchase of treasury stock	0	0
Intercompany Activity - Financing	2	18
Net cash provided by (used in) financing activities	28.4	17.6
Effect of exchange rate changes on cash	2.8	(4.2)
Net increase (decrease) in cash and cash equivalents	(11.2)	(5.1)
Cash and cash equivalents at beginning of period	230.5	179.5
Cash and cash equivalents at end of period	219.3	174.4
Consolidation, Eliminations [Member]
Net cash provided by operating activities	0	0
Investing activities
Purchases of property, plant and equipment	0	0
Proceeds from sale of property, plant and equipment	0	0
Proceeds from government grants	0
Final distribution of Reserve Yield Plus Fund	0
Intercompany Activity - Investing	2	18
Net cash used in investing activities	2	18
Financing activities
Net debt activity	0	0
Employee stock option exercises	0	0
Purchase of treasury stock	0	0
Intercompany Activity - Financing	(2)	(18)
Net cash provided by (used in) financing activities	(2)	(18)
Effect of exchange rate changes on cash	0	0
Net increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	$ 0	$ 0