Restructuring and Acquisition Related Expenses	9 Months Ended
Sep. 30, 2017
Restructuring and Related Activities [Abstract]
Restructuring and Acquisition Related Expenses	Restructuring and Acquisition Related Expenses Acquisition Related Expenses Acquisition related expenses, which include external costs such as legal, accounting, and advisory fees, totaled $3 million and $8 million for the three and nine months ended September 30, 2017, respectively. Our 2017 expenses related to completed acquisitions and acquisitions that were pending as of September 30, 2017. Acquisition related expenses incurred during the three and nine months ended September 30, 2016 totaled $3 million and $18 million. Of our 2016 expenses, $11 million was related to our acquisition of Rhiag, $4 million was related to our acquisition of PGW, and $3 million was related to other completed acquisitions and acquisitions that were pending as of September 30, 2016. Acquisition Integration Plans and Restructuring During the three and nine months ended September 30, 2017, we incurred $2 million and $2 million of restructuring expenses, respectively. Expenses incurred during the three and nine months ended September 30, 2017 were primarily a result of our ongoing integration activities in our Specialty segment, which was formed in 2014 and subsequently expanded through acquisitions. Expenses incurred were primarily related to facility closure and the merger of existing facilities into larger distribution centers. During the three and nine months ended September 30, 2016, we incurred restructuring expenses of $4 million and $12 million, respectively. These expenses were primarily a result of the integration of our acquisition of Parts Channel into our existing North America wholesale business and the integration of our Coast acquisition into our existing Specialty business. Expenses incurred were primarily related to facility closure and relocation costs for duplicate facilities, the merger of existing facilities into larger distribution centers, and the termination of employees. We expect to incur additional expenses related to the integration of certain of our acquisitions into our existing operations in 2017. These integration activities are expected to include the closure of duplicate facilities, rationalization of personnel in connection with the consolidation of overlapping facilities with our existing business, and moving expenses. Future expenses to complete these integration plans are expected to be less than $5 million.

Restructuring and Acquisition Related Expenses

Acquisition Related Expenses

Acquisition related expenses, which include external costs such as legal, accounting, and advisory fees, totaled $3 million and $8 million for the three and nine months ended September 30, 2017, respectively. Our 2017 expenses related to completed acquisitions and acquisitions that were pending as of September 30, 2017. Acquisition related expenses incurred during the three and nine months ended September 30, 2016 totaled $3 million and $18 million. Of our 2016 expenses, $11 million was related to our acquisition of Rhiag, $4 million was related to our acquisition of PGW, and $3 million was related to other completed acquisitions and acquisitions that were pending as of September 30, 2016.

Acquisition Integration Plans and Restructuring

During the three and nine months ended September 30, 2017, we incurred $2 million and $2 million of restructuring expenses, respectively. Expenses incurred during the three and nine months ended September 30, 2017 were primarily a result of our ongoing integration activities in our Specialty segment, which was formed in 2014 and subsequently expanded through acquisitions. Expenses incurred were primarily related to facility closure and the merger of existing facilities into larger distribution centers.

During the three and nine months ended September 30, 2016, we incurred restructuring expenses of $4 million and $12 million, respectively. These expenses were primarily a result of the integration of our acquisition of Parts Channel into our existing North America wholesale business and the integration of our Coast acquisition into our existing Specialty business. Expenses incurred were primarily related to facility closure and relocation costs for duplicate facilities, the merger of existing facilities into larger distribution centers, and the termination of employees.

We expect to incur additional expenses related to the integration of certain of our acquisitions into our existing operations in 2017. These integration activities are expected to include the closure of duplicate facilities, rationalization of personnel in connection with the consolidation of overlapping facilities with our existing business, and moving expenses. Future expenses to complete these integration plans are expected to be less than $5 million.