Income Taxes - Effective Tax Rate Reconciliation (Details) - USD ($)
$ in Millions |
12 Months Ended |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
| Difference between the effective income tax provision rate and the U.S. federal statutory income tax provision rate |
|
|
|
| U.S. federal statutory income tax rate |
21.00%
|
21.00%
|
21.00%
|
| U.S. state income taxes, net of federal income tax benefit |
10.20%
|
1.40%
|
(1.00%)
|
| Foreign tax rate differences |
(15.00%)
|
3.60%
|
6.80%
|
| Foreign financing structure |
11.20%
|
(3.00%)
|
(5.10%)
|
| U.S. Tax on foreign dividends |
(0.043)
|
0.009
|
0.036
|
| Research and development and other tax credits |
15.50%
|
(6.20%)
|
(10.50%)
|
| Benefit of CARES Act NOL carryback |
4.80%
|
0.00%
|
0.00%
|
| Change in valuation allowances |
(25.20%)
|
0.20%
|
0.00%
|
| Change in reserves for uncertain tax positions |
3.70%
|
(1.90%)
|
2.00%
|
| Change in statutory tax rates |
0.00%
|
0.00%
|
(3.90%)
|
| Excess tax benefits from stock compensation |
(1.10%)
|
(0.20%)
|
(2.90%)
|
| Other differences, net |
(5.30%)
|
0.90%
|
(0.50%)
|
| Effective income tax rate |
15.50%
|
16.70%
|
9.50%
|
| Difference between the effective income tax provision and the U.S. federal statutory income tax provision |
|
|
|
| U.S. federal statutory income tax rate |
$ (3.9)
|
$ 14.0
|
$ 8.6
|
| U.S. state income taxes, net of federal income tax benefit |
(1.9)
|
0.9
|
(0.4)
|
| Foreign tax rate differences |
2.8
|
2.4
|
2.8
|
| Foreign financing structure |
(2.1)
|
(2.0)
|
(2.1)
|
| U.S. Tax on foreign dividends |
0.8
|
0.6
|
1.5
|
| Research and development and other tax credits |
(2.9)
|
(4.1)
|
(4.3)
|
| Benefit of CARES Act NOL carryback |
(0.9)
|
0.0
|
0.0
|
| Change in valuation allowances |
4.7
|
0.1
|
0.0
|
| Change in reserves for uncertain tax positions |
(0.7)
|
(1.3)
|
0.8
|
| Change in statutory tax rate, amount |
0.0
|
0.0
|
(1.6)
|
| Excess tax benefits from stock compensation |
0.2
|
(0.1)
|
(1.2)
|
| Other differences, net |
1.0
|
0.6
|
(0.2)
|
| Total provision (benefit) for income taxes |
(2.9)
|
$ 11.1
|
3.9
|
| Benefit from tax rate change and other factors, CARES Act |
5.0
|
|
|
| Impact from GILTI provisions, CARES Act |
3.0
|
|
|
| Increase in reserve for uncertain income tax positions, CARES Act |
1.1
|
|
|
| Measurement period tax benefit adjustment |
|
|
0.9
|
| COVID-19 |
|
|
|
| Difference between the effective income tax provision and the U.S. federal statutory income tax provision |
|
|
|
| Change in valuation allowances |
$ 4.6
|
|
|
| Retained Earnings |
|
|
|
| Difference between the effective income tax provision and the U.S. federal statutory income tax provision |
|
|
|
| Reclassification of the stranded tax effects related to the Tax Act |
|
|
(0.8)
|
| Netherlands |
|
|
|
| Difference between the effective income tax provision and the U.S. federal statutory income tax provision |
|
|
|
| Change in statutory tax rate, amount |
|
|
$ 0.7
|