Stockholders' Equity, Comprehensive Income and Share-Based Compensation (Details Textual) $ / shares in Units, shares in Millions	1 Months Ended			3 Months Ended	9 Months Ended
	Jun. 30, 2018 $ / shares	Feb. 28, 2018 USD ($) $ / shares	Dec. 31, 2017 $ / shares	Jan. 28, 2018	Jul. 29, 2018 USD ($) employee_stock_purchase_plan shares	Jul. 30, 2017 USD ($) shares	Sep. 30, 2017 USD ($)
Equity [Line Items]
Amount authorized by board of directors to repurchase shares | $		$ 6,000,000,000.0					$ 3,000,000,000.0
Remaining authorized repurchase amount | $					$ 5,100,000,000
Dividends declared per share (in dollars per share) | $ / shares	$ 0.20	$ 0.20	$ 0.10
Payments of dividends | $					410,000,000	$ 323,000,000
Employee Stock
Equity [Line Items]
Total unrecognized compensation expense | $					$ 399,000,000
Weighted average period for unrecognized compensation expense to be recognized (in years)					2 years 6 months 29 days
Performance Shares
Equity [Line Items]
Additional performance-based awards to be earned upon certain levels of achievement (in shares) | shares					1
Award measurement period				3 years
Performance Shares | Min
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					81
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
Shares issued under employee stock purchase plans (in shares) | shares					1	2
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					19
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