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, 2016 $ / shares	Mar. 31, 2016 $ / shares	Dec. 31, 2015 $ / shares	Jul. 31, 2016 USD ($) shares	Jul. 26, 2015 USD ($) shares	Jul. 31, 2016 USD ($) employee_stock_purchase_plans shares	Jul. 26, 2015 USD ($) shares	Jun. 09, 2016 USD ($)	Apr. 26, 2015 USD ($)
Equity [Line Items]
Other comprehensive income (loss), net of tax | $				$ 8,000,000	$ 7,000,000	$ 5,000,000	$ (42,000,000)
Amount authorized by board of directors to repurchase shares | $								$ 2,000,000,000.0	$ 3,000,000,000.0
Remaining authorized repurchase amount | $				$ 1,950,000,000		$ 1,950,000,000
Common stock repurchases (in shares) | shares				9.0	32.1	89.5	32.1
Dividends declared per share (in dollars per share) | $ / shares	$ 0.10	$ 0.10	$ 0.10
Payments of Dividends | $						$ 336,000,000	$ 368,000,000
Number of employee stock purchase plans | employee_stock_purchase_plans						2
Employee Stock [Member]
Equity [Line Items]
Total unrecognized compensation expense | $				$ 297,000,000		$ 297,000,000
Weighted average period for unrecognized compensation expense to be recognized (in years)						2 years 6 months 29 days
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent						85.00%
Performance Shares [Member]
Equity [Line Items]
Additional performance-based awards to be earned upon certain levels of achievement | shares				1.0		1.0
Restricted Stock Units, Restricted Stock, Performance Shares and Performance Units [Member] | Certain Executive Officers [Member]
Equity [Line Items]
Measurement period for achieving TSR goals						2 years
Restricted Stock Units, Restricted Stock, Performance Shares and Performance Units [Member] | Certain Executive Officers [Member] | Maximum [Member]
Equity [Line Items]
Vesting period for performance-based awards						4 years
ESIP [Member] | Employee Stock Option [Member]
Equity [Line Items]
Number of shares available for grant (in shares) | shares				107.0		107.0
Employee Stock Purchase Plan, United States [Member]
Equity [Line Items]
Number of employee stock purchase plans | employee_stock_purchase_plans						1
Employee Stock Purchase Plan, International [Member]
Equity [Line Items]
Number of employee stock purchase plans | employee_stock_purchase_plans						1
Employee Stock Purchase Plan [Member]
Equity [Line Items]
Employee Stock Purchase Plan (ESPP), Purchase Period						6 months
Stock Issued During Period, Shares, Employee Stock Purchase Plans | shares						3.0	2.0
Employee Stock Purchase Plan [Member] | Employee Stock Option [Member]
Equity [Line Items]
Number of shares available for grant (in shares) | shares				26.0		26.0
Treasury Stock [Member]
Equity [Line Items]
Common stock repurchases (in shares) | shares						90.0	32.0
Defined and Postretirement Benefit Plans [Member]
Equity [Line Items]
Other comprehensive income (loss), net of tax | $						$ 0	$ (43,000,000)