Accounts Payable and Other Current Liabilities Accounts Payable and Other Current Liabilities (Tables)

12 Months Ended

Dec. 31, 2017

Payables and Accruals [Abstract]

Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]

Accounts payable and other current liabilities consisted of:

	As of December 31,
	2017		2016
Accounts payable	$	359	$	343
Accrued sales and use taxes	218		206
Accrued payroll and related	176		173
Public liability and property damage insurance liabilities – current	145		141
Deferred revenue – current	135		114
Accrued commissions	117		86
Accrued insurance	103		70
Other	366		355
Accounts payable and other current liabilities	$	1,619	$	1,488