Stockholders' Equity, Comprehensive Income and Share-Based Compensation - Additional Information (Details) $ / shares in Units, shares in Millions	1 Months Ended			3 Months Ended		9 Months Ended
	Jun. 30, 2020 $ / shares	Mar. 31, 2020 $ / shares	Dec. 31, 2019 $ / shares	Jul. 26, 2020 USD ($) $ / shares shares	Jul. 28, 2019 $ / shares	Jul. 26, 2020 USD ($) employee_stock_purchase_plan $ / shares shares	Jul. 28, 2019 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		$ 1,300,000,000
Dividends declared per share (in dollars per share) | $ / shares	$ 0.22	$ 0.22	$ 0.21	$ 0.22	$ 0.21	$ 0.65	$ 0.62
Payments of dividends						$ 587,000,000	$ 577,000,000
Tax effects on the unrealized gain (loss) on derivative instruments qualifying as cash flow hedges						$ 32,000,000
Employee Stock
Equity [Line Items]
Performance of total shareholder return						100.00%
Total unrecognized compensation expense				$ 455,000,000		$ 455,000,000
Weighted average period for unrecognized compensation expense to be recognized (in years)						2 years 7 months 6 days
Performance Shares
Equity [Line Items]
Additional performance-based awards to be earned upon certain levels of achievement (in shares) | shares				1.3		1.3
Award measurement metric relative weight						50.00%
Award measurement period						3 years
Performance Shares | Minimum
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%
Employee Stock Incentive Plan | Employee Stock Option
Equity [Line Items]
Number of shares available for grant (in shares) | shares				56.0		56.0
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				11.0		11.0
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