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Selected Quarterly Data (unaudited)
 12 Months Ended
Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]  
Selected Quarterly Data (unaudited)
Selected Quarterly Data (unaudited)
2018
 
Fourth
 
Third
 
Second
 
First
Revenue
 
$
799.3

 
$
761.1

 
$
770.2

 
$
736.2

Cost of sales
 
412.5

 
369.8

 
431.5

 
360.0

Operating expenses(1)
 
246.2

 
237.9

 
252.5

 
245.2

Asset Impairment, restructuring, and other special charges
 
46.0

 
12.4

 
68.0

 
2.4

Interest expense, net of capitalized interest
 
21.0


8.6


—


—

Income (loss) before income taxes
 
(2.2
)
 
78.8

 
(40.0
)
 
77.5

Income taxes
 
(18.6
)
 
18.6

 
22.8

 
4.8

Net income (loss)
 
16.4

 
60.2

 
(62.8
)
 
72.7

Earnings (loss) per share—basic and diluted
 
0.04

 
0.20

 
(0.21
)
 
0.25

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2017
 
Fourth
 
Third
 
Second
 
First
Revenue
 
$
754.3

 
$
697.1

 
$
732.8

 
$
704.8

Cost of sales
 
405.0

 
376.2

 
374.0

 
338.6

Operating expenses(1)
 
258.8

 
256.6

 
257.8

 
258.3

Asset Impairment, restructuring, and other special charges
 
185.8

 
23.7

 
58.8

 
106.8

Interest expense, net of capitalized interest
 
—


—


—


—

Income (loss) before income taxes
 
(155.4
)
 
(9.1
)
 
(15.2
)
 
(52.9
)
Income taxes
 
6.1

 
11.6

 
15.0

 
45.4

Net income (loss)
 
(161.5
)
 
(20.7
)
 
(30.2
)
 
(98.3
)
Earnings (loss) per share—basic and diluted
 
(0.55
)
 
(0.07
)
 
(0.10
)
 
(0.34
)
(1) Includes research and development and marketing, selling, and administrative expenses.