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, 2017 $ / shares	Mar. 31, 2017 $ / shares	Dec. 31, 2016 $ / shares	Jan. 29, 2017	Jul. 30, 2017 USD ($) employee_stock_purchase_plan shares	Jul. 31, 2016 USD ($) shares	Jun. 09, 2016 USD ($)
Equity [Line Items]
Amount authorized by board of directors to repurchase shares | $							$ 2,000,000,000
Remaining authorized repurchase amount | $					$ 995,000,000
Dividends declared per share (in dollars per share) | $ / shares	$ 0.10	$ 0.10	$ 0.10
Payments of dividends | $					$ 323,000,000	$ 336,000,000
Number of employee stock purchase plans | employee_stock_purchase_plan					2
Employee Stock
Equity [Line Items]
Total unrecognized compensation expense | $					$ 348,000,000
Weighted average period for unrecognized compensation expense to be recognized (in years)					2 years 7 months 2 days
Purchase price of common stock (percent)					85.00%
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 Purchase Plan, United States
Equity [Line Items]
Number of employee stock purchase plans | employee_stock_purchase_plan					1
Employee Stock Purchase Plan, Foreign
Equity [Line Items]
Number of employee stock purchase plans | employee_stock_purchase_plan					1
ESIP | Employee Stock Option
Equity [Line Items]
Number of shares available for grant (in shares) | shares					91
Employee Stock Purchase Plan
Equity [Line Items]
Employee stock purchase plan purchase period (in months)					6 months
Stock issued during period ESPP (in shares) | shares					2	3
Employee Stock Purchase Plan | Employee Stock Option
Equity [Line Items]
Number of shares available for grant (in shares) | shares					22