Acquisitions and Equity Investments	9 Months Ended
Sep. 30, 2017
Business Combinations [Abstract]
Acquisitions and Equity Investments	Acquisitions and Equity Investments During the nine months ended September 30, 2017, the Company acquired certain companies and equity investments for approximately $266.4 million. The Company recognized and measured the assets and liabilities assumed based on their fair values as of their respective acquisition dates. The results of operations for the acquired companies were included in the Company’s condensed consolidated statements of income beginning on their respective acquisition dates. The Company recorded approximately $105.4 million of goodwill and other intangible assets associated with the acquisitions. The Company is in the process of analyzing the estimated values of assets and liabilities acquired and is obtaining third-party valuations of certain tangible and intangible assets. The allocations of the respective purchase prices are therefore preliminary and subject to revision. Additional disclosure of the Inenco investment is provided below. Effective April 3, 2017, the Company acquired a 35% investment in the Inenco Group for approximately $72.1 million from Conbear Holdings Pty Limited ("Conbear"). The equity investment was funded with the Company’s cash on hand. The Inenco Group, which is headquartered in Sydney, Australia, is an industrial distributor of bearings, power transmissions, and seals in Australasia, with annual revenues of approximately $325 million and 161 locations across Australia and New Zealand, as well as an emerging presence in Asia. The Company and Conbear both have an option to acquire or sell, respectively, the remaining 65% of Inenco at a later date contingent upon certain conditions being satisfied. However, there can be no guarantee that such conditions will be met or, if they are met, whether either company would exercise its option. On September 22, 2017, the Company entered into a definitive agreement to acquire Alliance Automotive Group (“AAG”). AAG is headquartered in London and is a leading European distributor of vehicle parts, tools and workshop equipment with annual revenues of approximately $1.7 billion. AAG has over 1,800 company-owned stores and affiliated outlets across France, the U.K. and Germany. The acquisition is valued at a total purchase price of approximately $2.0 billion. The Company intends to finance the transaction through a combination of new loan agreements and note issuances. The Company also has available, but does not expect to utilize, a $2.0 billion 364-day unsecured bridge facility. The bridge facility is discussed further in the credit facilities footnote. The Company expects to close on the acquisition in November 2017. On September 25, 2017, the Company entered into a $1.0 billion foreign currency hedge denominated in Euros to hedge the purchase price for AAG acquisition. The hedge does not qualify for hedge accounting.

Acquisitions and Equity Investments

During the nine months ended September 30, 2017, the Company acquired certain companies and equity investments for approximately $266.4 million. The Company recognized and measured the assets and liabilities assumed based on their fair values as of their respective acquisition dates. The results of operations for the acquired companies were included in the Company’s condensed consolidated statements of income beginning on their respective acquisition dates. The Company recorded approximately $105.4 million of goodwill and other intangible assets associated with the acquisitions. The Company is in the process of analyzing the estimated values of assets and liabilities acquired and is obtaining third-party valuations of certain tangible and intangible assets. The allocations of the respective purchase prices are therefore preliminary and subject to revision. Additional disclosure of the Inenco investment is provided below.

Effective April 3, 2017, the Company acquired a 35% investment in the Inenco Group for approximately $72.1 million from Conbear Holdings Pty Limited ("Conbear"). The equity investment was funded with the Company’s cash on hand. The Inenco Group, which is headquartered in Sydney, Australia, is an industrial distributor of bearings, power transmissions, and seals in Australasia, with annual revenues of approximately $325 million and 161 locations across Australia and New Zealand, as well as an emerging presence in Asia.

The Company and Conbear both have an option to acquire or sell, respectively, the remaining 65% of Inenco at a later date contingent upon certain conditions being satisfied. However, there can be no guarantee that such conditions will be met or, if they are met, whether either company would exercise its option.

On September 22, 2017, the Company entered into a definitive agreement to acquire Alliance Automotive Group (“AAG”). AAG is headquartered in London and is a leading European distributor of vehicle parts, tools and workshop equipment with annual revenues of approximately $1.7 billion. AAG has over 1,800 company-owned stores and affiliated outlets across France, the U.K. and Germany. The acquisition is valued at a total purchase price of approximately $2.0 billion. The Company intends to finance the transaction through a combination of new loan agreements and note issuances. The Company also has available, but does not expect to utilize, a $2.0 billion 364-day unsecured bridge facility. The bridge facility is discussed further in the credit facilities footnote. The Company expects to close on the acquisition in November 2017.

On September 25, 2017, the Company entered into a $1.0 billion foreign currency hedge denominated in Euros to hedge the purchase price for AAG acquisition. The hedge does not qualify for hedge accounting.