Annual report pursuant to Section 13 and 15(d)

Income Tax - Reconciliation of Effective Tax Rate (Details)

v3.20.4
Income Tax - Reconciliation of Effective Tax Rate (Details)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]      
Federal statutory income tax rate 21.00% 21.00% 21.00%
Changes in rate resulting from:      
Share-based compensation (13.00%) 2.00% (1.00%)
Equity method investments (12.00%) (2.00%) (11.00%)
Other (4.00%) (1.00%) 2.00%
Valuation allowance 0.00% (15.00%) 2.00%
Effective tax rate (8.00%) 5.00% 13.00%