Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2021

Equity [Abstract]

Summary of Shares Outstanding

	Common Stock	Treasury Stock	Shares Outstanding
January 1, 2019	581,146,136	(345,284,702)	235,861,434
Purchases	—	(2,722,800)	(2,722,800)
Issuances	—	2,541,836	2,541,836
December 31, 2019	581,146,136	(345,465,666)	235,680,470
Issuances	—	1,005,795	1,005,795
December 31, 2020	581,146,136	(344,459,871)	236,686,265
Purchases	—	(1,521,765)	(1,521,765)
Issuances	—	742,526	742,526
December 31, 2021	581,146,136	(345,239,110)	235,907,026