REVENUES

12 Months Ended

Dec. 31, 2018

REVENUES

2. REVENUES

We adopted the New Revenue Standard on January 1, 2018 using the modified retrospective approach. The New Revenue Standard did not have an impact on the amount or timing of our revenue recognition; however, certain payments to customers were reclassified from advertising expenses to a reduction from revenues, resulting in an immaterial impact to the individual financial statement line items of our consolidated statements of income. Results for reporting periods beginning on and after January 1, 2018 are presented under the New Revenue Standard, while prior period results have not been adjusted and continue to be reported under the accounting standards in effect for those periods.

Disaggregation of Revenues

The following table presents our revenues disaggregated by primary geographical regions and major product lines within our single reporting segment:

Years Ended December 31,	2018			2017(1)			2016(1)
Primary Geographical Regions:
United States	$	4,126,639		$	3,919,684		$	3,813,204
Canada		291,685			269,603			267,220
Mexico		128,329			152,668			140,278
	$	4,546,653		$	4,341,955		$	4,220,702
Major Product Lines:
HVAC equipment		67	%		67	%		66	%
Other HVAC products		29	%		28	%		29	%
Commercial refrigeration products		4	%		5	%		5	%
		100	%		100	%		100	%

(1) As noted above, prior period amounts have not been adjusted under the modified retrospective method and remain as originally reported for such periods.

Practical Expedients

We generally expense sales commissions when incurred because the amortization period is one year or less. These costs are recorded within selling, general and administrative expenses. We do not disclose the value of unsatisfied performance obligations for contracts with an original expected length of one year or less.