Stockholders' Equity - Stock Repurchase Program (Details) shares in Millions	Dec. 31, 2021 USD ($) shares
Class of Stock [Line Items]
Number of shares repurchased (in shares) | shares	3,559
Aggregate cost for shares repurchased	$ 15,920,000,000
Remaining amount authorized under the stock repurchase program	2,080,000,000
Common Stock
Class of Stock [Line Items]
Stock repurchase program, aggregate authorized amount	$ 18,000,000,000