Subsequent Events (Details) - USD ($)		3 Months Ended	12 Months Ended
	Jan. 10, 2022	Dec. 31, 2021	Dec. 31, 2021	[1]	Dec. 31, 2020	[1]	Dec. 31, 2019	[1]	Jul. 12, 2021	Jan. 11, 2021
Subsequent Event [Line Items]
Cash dividends declared per common share (in dollars per share)		$ 0.25	$ 0.88		$ 0.76		$ 0.68
Common stock
Subsequent Event [Line Items]
Stock repurchase program, authorized amount									$ 2,000,000,000	$ 1,600,000,000
Subsequent event | Common stock
Subsequent Event [Line Items]
Dividends payable, date declared	Jan. 10, 2022
Cash dividends declared per common share (in dollars per share)	$ 0.30
Dividends payable, date to be paid	Feb. 15, 2022
Dividends payable, date of record	Feb. 01, 2022
Stock repurchase program, authorized amount	$ 2,000,000,000

[1] Figures in the table may not recalculate exactly due to rounding. Earnings per share is calculated based on unrounded numbers.