Shareholders' Equity - Ordinary Shares (Details) - USD ($) $ / shares in Units, shares in Millions	1 Months Ended				12 Months Ended		33 Months Ended
	Feb. 18, 2022	Nov. 30, 2020	Jun. 30, 2017	Nov. 30, 2014	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2020	Apr. 30, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Share repurchase authorization amount		$ 27,500,000,000						$ 5,000,000,000
Share repurchase authorization amount, increase during period		$ 5,000,000,000	$ 5,000,000,000	$ 5,000,000,000
Number of shares repurchased (in shares)					12.4	8.5	149.6
Average price per share (in dollars per share)					$ 286.82	$ 206.28
Costs recorded to retained earnings
Total repurchase cost					$ 3,543,000,000	$ 1,761,000,000	$ 18,300,000,000
Additional associated costs					0	2,000,000
Total costs recorded to retained earnings					3,543,000,000	$ 1,763,000,000
Remaining authorized repurchase amount					$ 1,700,000,000
Subsequent Event
Accumulated Other Comprehensive Income (Loss) [Line Items]
Share repurchase authorization amount, increase during period	$ 7,500,000,000