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Supplemental Cash Flow Data
 3 Months Ended
Mar. 31, 2017
Supplemental Cash Flow Data [Abstract]  
Supplemental Cash Flow Data
Supplemental Cash Flow Data
The increase (decrease) in operating capital for the three months ended March 31, 2017 and 2016 was (in millions):
 
2017
 
2016
(Increase) decrease in accounts receivable
$
779.5

 
$
1,019.0

(Increase) decrease in work in process and other current assets
(213.5
)
 
(329.7
)
Increase (decrease) in accounts payable
(1,117.5
)
 
(1,551.7
)
Increase (decrease) in customer advances and other current liabilities
(13.8
)
 
(23.9
)
Change in other assets and liabilities, net
14.7

 
79.2

 
$
(550.6
)
 
$
(807.1
)
 
 
 
 
Income taxes paid
$
64.8

 
$
135.5

Interest paid
$
53.2

 
$
41.5