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Other Current Assets (Tables)
12 Months Ended
Dec. 31, 2019
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Other Current Assets
Other current assets consisted of the following (in thousands):
 
 December 31,
 20192018
Deferred compensation plans$398,442  $311,708  
Prepaid expenses84,364  52,887  
Other42,768  37,990  
Other current assets$525,574  $402,585