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Schedule II - Valuation And Qualifying Accounts And Reserves
 12 Months Ended
Dec. 31, 2018
Schedule to Financial Statments [Abstract]  
Schedule II - Valuation and Qualifying Accounts
Schedule II

LABORATORY CORPORATION OF AMERICA HOLDINGS AND SUBSIDIARIES

VALUATION AND QUALIFYING ACCOUNTS AND RESERVES
Years Ended December 31, 2018, 2017 and 2016
(Dollars in millions)

 
Balance at
beginning
of year
 
Additions
Charged to Costs and Expense
 
Other
(Deductions)
Additions
 
Balance
at end
of year
Year ended December 31, 2018:
 
 
 
 
 

 
 
Applied against asset accounts:
 
 
 
 
 

 
 
Valuation allowance-deferred tax assets
$
42.8

 
$
3.4

 
$
—

 
$
46.2

Year ended December 31, 2017:
 

 
 

 
 

 
 

Applied against asset accounts:
 

 
 

 
 

 
 

Valuation allowance-deferred tax assets
$
31.3

 
$
11.5

 
$
—

 
$
42.8

Year ended December 31, 2016:
 

 
 

 
 

 
 

Applied against asset accounts:
 

 
 

 
 

 
 

Valuation allowance-deferred tax assets
$
15.1

 
$
16.2

 
$
—

 
$
31.3