Annual report pursuant to Section 13 and 15(d)

Share-Based Compensation (Cash Settled SARs) (Details)

v3.20.4
Share-Based Compensation (Cash Settled SARs) (Details) - Cash-settled SARs - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Stock Appreciation Rights    
Outstanding, beginning of period (in shares) 368 0
Granted (in shares) 0 0
Reissued (in shares)   368
Exercised (in shares) 0 0
Forfeited (in shares) 0 0
Expired (in shares) 0 0
Outstanding, end of period (in shares) 368 368
Vested, end of period (in shares) 368 368
Vested and exercisable, end of period (in shares) 0 0
Weighted Average Exercise    
Outstanding, beginning of period (in dollars per share) $ 100.34 $ 0
Granted (in dollars per share) 0 0
Reissued (in dollars per share)   100.34
Exercised (in dollars per share) 0 0
Forfeited (in dollars per share) 0 0
Expired (in dollars per share) 0 0
Outstanding, end of period (in dollars per share) 100.34 100.34
Vested, end of period (in dollars per share) 100.34 100.34
Vested and exercisable, end of period (in dollars per share) $ 0 $ 0
Weighted Average Remaining Life (In years), Outstanding, end of period 3 years 4 months 24 days 4 years 4 months 24 days
Aggregate Intrinsic Value, Outstanding, end of period $ 0.0 $ 0.0
Aggregate Intrinsic Value, Vested, end of period 0.0 0.0
Aggregate Intrinsic Value, Vested and exercisable, end of period $ 0.0 $ 0.0