Shareholders' Equity - Common Stock Outstanding (Details) - shares	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury stock (in shares)		14,592,888	14,592,888
Class A
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued, beginning balance (in shares)	75,714,163	75,714,163	71,727,061	71,675,379
Issuance (repurchased) pursuant to benefit plans (in shares)		1,021,223	640,112	113,916
Restricted stock forfeited and withheld for taxes (in shares)		(330,652)	(138,225)	(70,672)
Exercised (in shares)		0	0	8,438
Class B common stock converted to Class A common stock (in shares)	20,308,454		3,485,215	0
Shares issued, ending balance (in shares)		96,713,188	75,714,163	71,727,061
Treasury stock (in shares)		14,592,888	14,592,888	14,592,888
Total shares outstanding (in shares)		82,120,300	61,121,275	57,134,173
Class B
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued, beginning balance (in shares)	20,308,454	20,308,454	23,793,669	23,793,669
Issuance (repurchased) pursuant to benefit plans (in shares)		0	0	0
Restricted stock forfeited and withheld for taxes (in shares)		0	0	0
Exercised (in shares)		0	0	0
Class B common stock converted to Class A common stock (in shares)	(20,308,454)		(3,485,215)	0
Shares issued, ending balance (in shares)		0	20,308,454	23,793,669
Treasury stock (in shares)		0	0	0
Total shares outstanding (in shares)		0	20,308,454	23,793,669