Accounts Receivable Factoring and Securitization	3 Months Ended
Dec. 31, 2017
Accounts Receivable Factoring and Securitization [Abstract]
Accounts Receivable Factoring and Securitization	Accounts Receivable Factoring and Securitization Off-balance sheet arrangements Swedish Factoring Facility: The company has an arrangement to sell trade receivables from AB Volvo through one of its European subsidiaries. Under this arrangement with Nordea Bank, which expires in March 2020, the company can sell up to, at any point in time, €155 million ($185 million) of eligible trade receivables. The amount of eligible receivables sold may exceed Nordea Bank's commitment at Nordea Bank's discretion. The receivables under this program are sold at face value and are excluded from the consolidated balance sheet. The company had utilized €169 million ($202 million) and €139 million ($164 million) of this accounts receivable factoring facility as of December 31, 2017 and September 30, 2017, respectively. The facility is backed by a 364-day liquidity commitment from Nordea Bank which extends through April 23, 2018. The commitment is subject to standard terms and conditions for this type of arrangement. U.S. Factoring Facility: The company has an arrangement to sell trade receivables from AB Volvo and its U.S. subsidiaries through one of its U.S. subsidiaries. Under this arrangement with Nordea Bank, which expires in February 2019, the company can sell up to, at any point in time, €80 million ($96 million) of eligible trade receivables. The amount of eligible receivables sold may exceed Nordea Bank’s commitment at Nordea Bank’s discretion. The receivables under this program are sold at face value and are excluded from the consolidated balance sheet. The company had utilized €37 million ($44 million) and €37 million ($43 million) of this accounts receivable factoring facility as of December 31, 2017 and September 30, 2017, respectively. United Kingdom Factoring Facility: The company has an arrangement to sell trade receivables from AB Volvo and its European subsidiaries through one of its United Kingdom subsidiaries. On January 23, 2018, Meritor extended this United Kingdom factoring facility with Nordea Bank until February 2, 2022. All other terms of the agreement remain unchanged. Under this arrangement, the company can sell up to, at any point in time, €25 million ($30 million) of eligible trade receivables. The receivables under this program are sold at face value and are excluded from the consolidated balance sheet. The company had utilized €10 million ($12 million) and €7 million ($9 million) of this accounts receivable factoring facility as of December 31, 2017 and September 30, 2017, respectively. The agreement is subject to standard terms and conditions for these types of arrangements, including a sole discretion clause whereby the bank retains the right to not purchase receivables, which has not been invoked since the inception of the program. Italy Factoring Facility: The company has an arrangement to sell trade receivables from AB Volvo and its European subsidiaries through one of its Italian subsidiaries. Under this arrangement with Nordea Bank, which expires in June 2022, the company can sell up to, at any point in time, €30 million ($36 million) of eligible trade receivables. The receivables under this program are sold at face value and are excluded from the consolidated balance sheet. The company had utilized €26 million ($31 million) and €22 million ($26 million) of this accounts receivable factoring facility as of December 31, 2017 and September 30, 2017, respectively. The agreement is subject to standard terms and conditions for these types of arrangements, including a sole discretion clause whereby the bank retains the right to not purchase receivables, which has not been invoked since the inception of the program. In addition to the above facilities, a number of the company’s subsidiaries, primarily in Europe, factor eligible accounts receivable with financial institutions. Certain receivables are factored without recourse to the company and are excluded from accounts receivable in the consolidated balance sheet. The amount of factored receivables excluded from accounts receivable under these arrangements was $25 million and $19 million at December 31, 2017 and September 30, 2017, respectively. Total costs associated with all of the off-balance sheet arrangements described above were $2 million and $1 million in the three months ended December 31, 2017 and 2016, respectively, and are included in selling, general and administrative expenses in the condensed consolidated statements of operations. On-balance sheet arrangements U.S. Securitization Facility: On December 5, 2017, the company extended its $100 million U.S. accounts receivables securitization facility with PNC Bank until December 7, 2020. The maximum permitted priority debt-to-EBITDA ratio as of the last day of each fiscal quarter under the facility is 2.25 to 1.00. This program is provided by PNC Bank, National Association, as Administrator and Purchaser, and the other Purchasers and Purchaser Agents from time to time (participating lenders), which are party to the agreement. Under this program, the company has the ability to sell an undivided percentage ownership interest in substantially all of its trade receivables (excluding the receivables due from AB Volvo and subsidiaries eligible for sale under the U.S. accounts receivable factoring facility) of certain U.S. subsidiaries to ArvinMeritor Receivables Corporation (“ARC”), a wholly-owned, special purpose subsidiary. ARC funds these purchases with borrowings from participating lenders under a loan agreement. This program also includes a letter of credit facility pursuant to which ARC may request the issuance of letters of credit issued for the company’s U.S. subsidiaries (originators) or their designees, which when issued will constitute a utilization of the facility for the amount of letters of credit issued. Amounts outstanding under this agreement are collateralized by eligible receivables purchased by ARC and are reported as short-term debt in the condensed consolidated balance sheet. At December 31, 2017 and September 30, 2017, $38 million and $89 million, respectively, were outstanding under this program, and no amounts were outstanding for letters of credit. This securitization program contains a cross default to the revolving credit facility. At certain times during any given month, the company may sell eligible accounts receivable under this program to fund intra-month working capital needs. In such months, the company would then typically utilize the cash received from customers throughout the month to repay the borrowings under the program. Accordingly, during any given month, the company may borrow under this program amounts exceeding the amounts shown as outstanding at fiscal quarter ends.

Accounts Receivable Factoring and Securitization

Off-balance sheet arrangements

Swedish Factoring Facility: The company has an arrangement to sell trade receivables from AB Volvo through one of its European subsidiaries. Under this arrangement with Nordea Bank, which expires in March 2020, the company can sell up to, at any point in time, €155 million ($185 million) of eligible trade receivables. The amount of eligible receivables sold may exceed Nordea Bank's commitment at Nordea Bank's discretion. The receivables under this program are sold at face value and are excluded from the consolidated balance sheet. The company had utilized €169 million ($202 million) and €139 million ($164 million) of this accounts receivable factoring facility as of December 31, 2017 and September 30, 2017, respectively.

The facility is backed by a 364-day liquidity commitment from Nordea Bank which extends through April 23, 2018. The commitment is subject to standard terms and conditions for this type of arrangement.

U.S. Factoring Facility: The company has an arrangement to sell trade receivables from AB Volvo and its U.S. subsidiaries through one of its U.S. subsidiaries. Under this arrangement with Nordea Bank, which expires in February 2019, the company can sell up to, at any point in time, €80 million ($96 million) of eligible trade receivables. The amount of eligible receivables sold may exceed Nordea Bank’s commitment at Nordea Bank’s discretion. The receivables under this program are sold at face value and are excluded from the consolidated balance sheet. The company had utilized €37 million ($44 million) and €37 million ($43 million) of this accounts receivable factoring facility as of December 31, 2017 and September 30, 2017, respectively.

United Kingdom Factoring Facility: The company has an arrangement to sell trade receivables from AB Volvo and its European subsidiaries through one of its United Kingdom subsidiaries. On January 23, 2018, Meritor extended this United Kingdom factoring facility with Nordea Bank until February 2, 2022. All other terms of the agreement remain unchanged. Under this arrangement, the company can sell up to, at any point in time, €25 million ($30 million) of eligible trade receivables. The receivables under this program are sold at face value and are excluded from the consolidated balance sheet. The company had utilized €10 million ($12 million) and €7 million ($9 million) of this accounts receivable factoring facility as of December 31, 2017 and September 30, 2017, respectively. The agreement is subject to standard terms and conditions for these types of arrangements, including a sole discretion clause whereby the bank retains the right to not purchase receivables, which has not been invoked since the inception of the program.

Italy Factoring Facility: The company has an arrangement to sell trade receivables from AB Volvo and its European subsidiaries through one of its Italian subsidiaries. Under this arrangement with Nordea Bank, which expires in June 2022, the company can sell up to, at any point in time, €30 million ($36 million) of eligible trade receivables. The receivables under this program are sold at face value and are excluded from the consolidated balance sheet. The company had utilized €26 million ($31 million) and €22 million ($26 million) of this accounts receivable factoring facility as of December 31, 2017 and September 30, 2017, respectively. The agreement is subject to standard terms and conditions for these types of arrangements, including a sole discretion clause whereby the bank retains the right to not purchase receivables, which has not been invoked since the inception of the program.

In addition to the above facilities, a number of the company’s subsidiaries, primarily in Europe, factor eligible accounts receivable with financial institutions. Certain receivables are factored without recourse to the company and are excluded from accounts receivable in the consolidated balance sheet. The amount of factored receivables excluded from accounts receivable under these arrangements was $25 million and $19 million at December 31, 2017 and September 30, 2017, respectively.

Total costs associated with all of the off-balance sheet arrangements described above were $2 million and $1 million in the three months ended December 31, 2017 and 2016, respectively, and are included in selling, general and administrative expenses in the condensed consolidated statements of operations.

On-balance sheet arrangements

U.S. Securitization Facility: On December 5, 2017, the company extended its $100 million U.S. accounts receivables securitization facility with PNC Bank until December 7, 2020. The maximum permitted priority debt-to-EBITDA ratio as of the last day of each fiscal quarter under the facility is 2.25 to 1.00. This program is provided by PNC Bank, National Association, as Administrator and Purchaser, and the other Purchasers and Purchaser Agents from time to time (participating lenders), which are party to the agreement. Under this program, the company has the ability to sell an undivided percentage ownership interest in substantially all of its trade receivables (excluding the receivables due from AB Volvo and subsidiaries eligible for sale under the U.S. accounts receivable factoring facility) of certain U.S. subsidiaries to ArvinMeritor Receivables Corporation (“ARC”), a wholly-owned, special purpose subsidiary. ARC funds these purchases with borrowings from participating lenders under a loan agreement. This program also includes a letter of credit facility pursuant to which ARC may request the issuance of letters of credit issued for the company’s U.S. subsidiaries (originators) or their designees, which when issued will constitute a utilization of the facility for the amount of letters of credit issued. Amounts outstanding under this agreement are collateralized by eligible receivables purchased by ARC and are reported as short-term debt in the condensed consolidated balance sheet. At December 31, 2017 and September 30, 2017, $38 million and $89 million, respectively, were outstanding under this program, and no amounts were outstanding for letters of credit. This securitization program contains a cross default to the revolving credit facility. At certain times during any given month, the company may sell eligible accounts receivable under this program to fund intra-month working capital needs. In such months, the company would then typically utilize the cash received from customers throughout the month to repay the borrowings under the program. Accordingly, during any given month, the company may borrow under this program amounts exceeding the amounts shown as outstanding at fiscal quarter ends.