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Contract Assets and Liabilities (Tables)
 9 Months Ended
Sep. 30, 2019
Contract with Customer, Asset and Liability [Abstract]  
Contract with Customer, Asset and Liability [Table Text Block]
Contract Assets and Liabilities

The following table summarizes our beginning and ending balances for accounts receivable and contract liabilities associated with our contracts with customers:

 
 
 
 
 
Accounts Receivable, Net
Contract Liabilities (Current)
Contract Liabilities (Long-term)
December 31, 2018
$
966.5

$
44.3

$
77.6

September 30, 2019
976.9

22.6

83.1

Increase/(decrease)
$
10.4

$
(21.7
)
$
5.5