Net Income per Share (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from EPS (in shares)			800,000	300,000
Amount authorized under stock repurchase program	$ 1,500,000,000		$ 1,500,000,000
Available for repurchase under the stock repurchase program	$ 135,300,000		$ 135,300,000
Class A Common Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of shares repurchased (in shares)	0	0	0	0