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Lease Comitments
12 Months Ended
Dec. 31, 2018
Lease Commitments [Abstract]  
Lease Commitments [Table Text Block] Lease Commitments

The company leases certain office, distribution, and other property under non-cancelable operating leases expiring at various dates through 2033. Rental expense under non-cancelable operating leases, net of sublease income, amounted to $88,988, $83,636, and $78,521 in 2018, 2017, and 2016, respectively.

Aggregate minimum rental commitments under all non-cancelable operating leases, exclusive of real estate taxes, insurance, and leases related to facilities closed as a result of the integration of acquired businesses and the restructuring of the company, are as follows:
2019
 
$
85,770

2020
 
67,158

2021
 
52,826

2022
 
44,801

2023
 
37,528

Thereafter
 
147,294