Equity - Shareholders' Equity (Details) - shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Movement in Common Stock and Treasury Stock [Roll Forward]
Balance January 1 (in shares)	3,577,103,522
Balance December 31 (in shares)	3,577,103,522	3,577,103,522
Common Stock
Movement in Common Stock and Treasury Stock [Roll Forward]
Balance January 1 (in shares)	3,577,000,000	3,577,000,000	3,577,000,000
Purchases of treasury stock (in shares)	0	0	0
Issuances (in shares)	0	0	0
Balance December 31 (in shares)	3,577,000,000	3,577,000,000	3,577,000,000
Treasury Stock
Movement in Common Stock and Treasury Stock [Roll Forward]
Balance January 1 (in shares)	1,049,000,000	1,047,000,000	1,038,000,000
Purchases of treasury stock (in shares)	0	11,000,000	16,000,000
Issuances (in shares)	(10,000,000)	(9,000,000)	(7,000,000)
Balance December 31 (in shares)	1,039,000,000	1,049,000,000	1,047,000,000