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Income Taxes (Tables)
 12 Months Ended
Dec. 31, 2019
Income Tax Disclosure [Abstract]  
Schedule of income before income tax and components of Income tax expense (benefit)

Pre-tax income (loss) and the (benefit) provision for income taxes from continuing operations are summarized as follows (in millions):
 
Year Ended
 
December 31,
2019
 
December 31,
2018
 
December 31,
2017
Pre-tax income (loss):
 
 
 
 
 
Ireland
$
(300.3
)
 
$
(109.0
)
 
$
(454.0
)
United States
(291.9
)
 
(428.6
)
 
(144.9
)
Other foreign
763.2

 
828.2

 
879.0

Total pre-tax income
171.0

 
290.6

 
280.1


 
 
 
 
 
Current provision (benefit) for income taxes:
 
 
 
 
 
Ireland
(2.2
)
 
22.7

 
(8.1
)
United States
51.0

 
66.4

 
100.4

Other foreign
16.1

 
75.1

 
46.1

Subtotal
64.9

 
164.2

 
138.4

Deferred provision (benefit) for income taxes:
 
 
 
 
 
Ireland
—

 
(13.9
)
 
13.1

United States
(30.2
)
 
7.3

 
7.8

Other foreign
(9.8
)
 
2.0

 
1.2

Subtotal
(40.0
)
 
(4.6
)
 
22.1

Total provision for income taxes
$
24.9

 
$
159.6

 
$
160.5
Schedule of effective income tax rate reconciliation
A reconciliation of the provision based on the Irish statutory income tax rate to our effective income tax rate is as follows:
 
Year Ended
 
December 31,
2019
 
December 31,
2018
 
December 31,
2017
Provision at statutory rate
12.5
 %
 
12.5
 %
 
12.5
 %
Foreign rate differential
3.1

 
(7.1
)
 
(93.3
)
State income taxes, net of federal benefit
2.7

 
3.0

 
(1.4
)
Provision to return
0.8

 
(1.0
)
 
9.3

Tax credits
(2.7
)
 
(1.3
)
 
(0.6
)
Change in tax law
(1.1
)
 
(6.2
)
 
10.3

Change in valuation allowance
(29.1
)
 
51.0

 
17.0

Change in unrecognized taxes
(4.7
)
 
13.8

 
22.2

Permanent differences
31.2

 
(14.1
)
 
61.8

Taxes on unremitted earnings
3.6

 
3.9

 
17.3

Other
(1.7
)
 
0.4

 
2.2

Effective income tax rate
14.6
 %
 
54.9
 %
 
57.3
 %
    
Schedule of deferred tax assets and liabilities The components of our net deferred income tax asset (liability) were as follows (in millions):
    
 
Year Ended
 
December 31,
2019
 
December 31,
2018
Deferred income tax asset (liability):
 
 
 
Depreciation and amortization
$
(366.7
)
 
$
(371.2
)
Investment in partnership
(38.1
)
 
—

Right of use assets
(30.5
)
 
—

Unremitted earnings
(29.0
)
 
(8.3
)
Inventory basis differences
32.7

 
27.8

Accrued liabilities
91.3

 
87.1

Lease obligations
30.5

 
—

Share-based compensation
23.2

 
19.6

Federal benefit of unrecognized tax positions
20.7

 
18.2

Loss and credit carryforwards
373.3

 
359.2

R&D credit carryforwards
54.1

 
58.8

Interest carryforwards
60.5

 
76.1

Other, net
4.1

 
9.5

Subtotal
$
226.1

 
$
276.8

Valuation allowance (1)
(501.3
)
 
(557.9
)
Net deferred income tax liability:
$
(275.2
)
 
$
(281.1
)

(1) The movement in the valuation allowance balance differs from the amount in the effective tax rate reconciliation due to adjustments affecting balance sheet only items and foreign currency.
        
The above amounts are classified on the Consolidated Balance Sheets as follows (in millions):
 
Year Ended
 
December 31,
2019
 
December 31,
2018
Assets
$
5.4

 
$
1.2

Liabilities
(280.6
)
 
(282.3
)
Net deferred income tax liability
$
(275.2
)
 
$
(281.1
)
Summary of income tax contingencies
The Company operates in multiple jurisdictions with complex tax policy and regulatory environments and establishes reserves for uncertain positions in accordance with the accounting guidance governing uncertainty in income taxes. Uncertainty in a tax position may arise because tax laws are subject to interpretation. The following table summarizes the activity related to the liability recorded for uncertain tax positions, excluding interest and penalties (in millions):
 
Unrecognized
Tax Benefits
Balance at December 31, 2017
$
347.9

Additions:
 
Positions related to the current year
39.4

Positions related to prior years
6.8

Reductions:
 
Settlements with taxing authorities
(6.5
)
Lapse of statutes of limitation
(1.1
)
Decrease in prior year positions
(6.4
)
Cumulative translation adjustment
(3.0
)
Balance at December 31, 2018
377.1

Additions:
 
Positions related to the current year
8.2

Positions related to prior years
3.1

Reductions:
 
Settlements with taxing authorities
(3.0
)
Lapse of statutes of limitation
(23.5
)
Decrease in prior year positions
(12.1
)
Cumulative translation adjustment
0.7

Balance at December 31, 2019
$
350.5