Annual report pursuant to Section 13 and 15(d)

Share-Based Compensation - Schedule of Unrecognized Compensation Cost (Details)

v3.20.4
Share-Based Compensation - Schedule of Unrecognized Compensation Cost (Details)
$ in Millions
12 Months Ended
Dec. 31, 2020
USD ($)
Restricted Stock Share Awards [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Unrecognized compensation cost $ 1
Recognized over a weighted average period 3 months 18 days
Restricted Share Unit And Performance Stock Unit Awards [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Unrecognized compensation cost $ 111
Recognized over a weighted average period 1 year 3 months 18 days
Phantom Unit Awards [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Unrecognized compensation cost $ 0
Recognized over a weighted average period 2 months 12 days