Stockholders' Equity, Comprehensive Income and Share-Based Compensation - Additional Information (Details) $ / shares in Units, shares in Millions	1 Months Ended	3 Months Ended
	Dec. 31, 2020 $ / shares	Jan. 31, 2021 USD ($) employee_stock_purchase_plan $ / shares shares	Jan. 26, 2020 USD ($) $ / shares	Feb. 28, 2018 USD ($)
Equity [Line Items]
Amount authorized by board of directors to repurchase shares				$ 6,000,000,000.0
Remaining authorized repurchase amount		$ 1,300,000,000
Dividends declared per share (in dollars per share) | $ / shares	$ 0.22	$ 0.22	$ 0.21
Payments of dividends		$ 201,000,000	$ 192,000,000
Employee Stock
Equity [Line Items]
Performance of total shareholder return		100.00%
Total unrecognized compensation expense		$ 627,000,000
Weighted average period for unrecognized compensation expense to be recognized (in years)		3 years
Performance Shares
Equity [Line Items]
Additional performance-based awards to be earned upon certain levels of achievement (in shares) | shares		1.3
Award measurement metric relative weight		50.00%
Award measurement period		3 years
Performance Shares | Executive Officers
Equity [Line Items]
Award measurement period		5 years
Performance Shares | Minimum
Equity [Line Items]
Award vesting rights, percentage of target amount		0.00%
Performance Shares | Minimum | Executive Officers
Equity [Line Items]
Award vesting rights, percentage of target amount		0.00%
Performance Shares | Maximum
Equity [Line Items]
Award vesting rights, percentage of target amount		200.00%
Performance Shares | Maximum | Executive Officers
Equity [Line Items]
Award vesting rights, percentage of target amount		200.00%
Employee Stock Incentive Plan | Employee Stock Option
Equity [Line Items]
Number of shares available for grant (in shares) | shares		48.0
Employee Stock Purchase Plan
Equity [Line Items]
Number of employee stock purchase plans | employee_stock_purchase_plan		2
Employee stock purchase plan purchase period		6 months
Employee Stock Purchase Plan | Employee Stock
Equity [Line Items]
Purchase price of common stock		85.00%
Employee Stock Purchase Plan | Employee Stock Option
Equity [Line Items]
Number of shares available for grant (in shares) | shares		10.0
United States | Employee Stock Purchase Plan
Equity [Line Items]
Number of employee stock purchase plans | employee_stock_purchase_plan		1
Non-US | Employee Stock Purchase Plan
Equity [Line Items]
Number of employee stock purchase plans | employee_stock_purchase_plan		1