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Revenue (Tables)
 12 Months Ended
Dec. 31, 2019
Revenue from Contract with Customer [Abstract]  
Disaggregation of Revenue
Our revenues related to the following geographic areas were as follows for the periods ended December 31:
 
Twelve-month period
 
2019
 
2018
 
2017
United States
$
4,568.9

 
4,285.5

 
3,842.9

Canada and Mexico
606.8

 
530.8

 
432.3

North America
5,175.7

 
4,816.3

 
4,275.2

All other foreign countries
158.0

 
148.8

 
115.3

Total revenues
$
5,333.7

 
4,965.1

 
4,390.5

The percentages of our sales by end market were as follows for the periods ended December 31:
 
Twelve-month period
 
2019
 
2018
 
2017
Manufacturing
67.5
%
 
66.7
%
 
66.5
%
Non-residential construction
12.9
%
 
13.1
%
 
13.0
%
Other
19.6
%
 
20.2
%
 
20.5
%
 
100.0
%
 
100.0
%
 
100.0
%
The percentages of our sales by product line were as follows for the periods ended December 31(1):
 
 
 
Twelve-month Period
Type
Introduced
 
2019
 
2018
 
2017
Fasteners(2)
1967
 
34.2
%
 
34.9
%
 
35.6
%
Tools
1993
 
9.9
%
 
10.0
%
 
10.1
%
Cutting tools
1996
 
5.7
%
 
5.7
%
 
5.8
%
Hydraulics & pneumatics
1996
 
6.8
%
 
6.8
%
 
6.8
%
Material handling
1996
 
5.9
%
 
5.8
%
 
5.9
%
Janitorial supplies
1996
 
7.8
%
 
7.6
%
 
7.3
%
Electrical supplies
1997
 
4.7
%
 
4.7
%
 
4.9
%
Welding supplies
1997
 
4.2
%
 
4.1
%
 
4.2
%
Safety supplies
1999
 
17.9
%
 
17.2
%
 
16.3
%
Other
 
 
2.9
%
 
3.2
%
 
3.1
%
 
 
 
100.0
%
 
100.0
%
 
100.0
%
(1) In 2018, we reclassified certain product category designations and have conformed the prior period percentages to the current year presentation.
(2) The fastener product line represents fasteners and miscellaneous supplies.