Debt	9 Months Ended
Sep. 30, 2018
Debt Disclosure [Abstract]
Debt	5. Debt On April 30, 2018, the Company replaced its existing senior secured revolving credit facility and entered into a senior secured revolving credit facility (the “Credit Facility”) with a syndicate of lenders with Wells Fargo Bank, National Association, serving as the administrative agent. The five-year Credit Facility provides for a $750 million global revolving credit facility (with a letter of credit subfacility of $60 million, and a swing line subfacility of 10% of the facility amount), of which up to $100 million is available for the Company’s Canadian subsidiaries and $40 million for the Company’s UK subsidiaries. The Company has the right, subject to certain conditions, to increase the aggregate principal amount of commitments under the credit facility by $250 million. The obligations under the Credit Facility are secured by substantially all the assets of the Company and its subsidiaries. The Credit Facility contains customary covenants, representations and warranties and events of default. The Company will be required to maintain a fixed charge coverage ratio of at least 1.00:1.00 as of the end of each fiscal quarter if excess availability under the Credit Facility falls below the greater of 12.5% of the borrowing base or $60 million. Borrowings under the Credit Facility will bear an interest rate at the Company’s option, at (i) the base rate plus an applicable margin based on the Company’s fixed charge coverage ratio (and if applicable, the Company’s leverage ratio); or (ii) the greater of LIBOR for the applicable interest period and zero, plus an applicable margin based on the Company’s fixed charge coverage ratio (and if applicable, the Company’s leverage ratio). The Credit Facility includes a commitment fee on the unused portion of commitments that ranges from 25 to 37.5 basis points. Commitment fees incurred during the period were included in other expense in the consolidated statements of operations. Availability under the Credit Facility is determined by a borrowing base comprised of eligible receivables and eligible inventory in the U.S and Canada. As of September 30, 2018, the Company borrowed $170 million against the Credit Facility and had approximately $403 million in availability (as defined in the Credit Facility) resulting in the excess availability (as defined in the Credit Facility) of 69% subject to certain limitations. The Company was not obligated to pay back the borrowing against the Credit Facility until the expiration date, as such the outstanding borrowing is classified as long-term debt in the consolidated balance sheets. The Company issued $7 million in letters of credit under the Credit Facility primarily for casualty insurance expiring in July 2019.

5. Debt

On April 30, 2018, the Company replaced its existing senior secured revolving credit facility and entered into a senior secured revolving credit facility (the “Credit Facility”) with a syndicate of lenders with Wells Fargo Bank, National Association, serving as the administrative agent. The five-year Credit Facility provides for a $750 million global revolving credit facility (with a letter of credit subfacility of $60 million, and a swing line subfacility of 10% of the facility amount), of which up to $100 million is available for the Company’s Canadian subsidiaries and $40 million for the Company’s UK subsidiaries. The Company has the right, subject to certain conditions, to increase the aggregate principal amount of commitments under the credit facility by $250 million. The obligations under the Credit Facility are secured by substantially all the assets of the Company and its subsidiaries. The Credit Facility contains customary covenants, representations and warranties and events of default. The Company will be required to maintain a fixed charge coverage ratio of at least 1.00:1.00 as of the end of each fiscal quarter if excess availability under the Credit Facility falls below the greater of 12.5% of the borrowing base or $60 million.

Borrowings under the Credit Facility will bear an interest rate at the Company’s option, at (i) the base rate plus an applicable margin based on the Company’s fixed charge coverage ratio (and if applicable, the Company’s leverage ratio); or (ii) the greater of LIBOR for the applicable interest period and zero, plus an applicable margin based on the Company’s fixed charge coverage ratio (and if applicable, the Company’s leverage ratio). The Credit Facility includes a commitment fee on the unused portion of commitments that ranges from 25 to 37.5 basis points. Commitment fees incurred during the period were included in other expense in the consolidated statements of operations.

Availability under the Credit Facility is determined by a borrowing base comprised of eligible receivables and eligible inventory in the U.S and Canada. As of September 30, 2018, the Company borrowed $170 million against the Credit Facility and had approximately $403 million in availability (as defined in the Credit Facility) resulting in the excess availability (as defined in the Credit Facility) of 69% subject to certain limitations. The Company was not obligated to pay back the borrowing against the Credit Facility until the expiration date, as such the outstanding borrowing is classified as long-term debt in the consolidated balance sheets.

The Company issued $7 million in letters of credit under the Credit Facility primarily for casualty insurance expiring in July 2019.