Earnings Per Share - Narrative (Details) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Underwater Stock Options
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Equivalent shares excluded from weighted average shares outstanding (in shares)	2,000,000	9,000,000	2,000,000
In-the-money Options
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Equivalent shares excluded from weighted average shares outstanding (in shares)		0	3,000,000