Stockholders' Equity, Comprehensive Income and Share-Based Compensation (Details Textual) $ / shares in Units, shares in Millions	1 Months Ended		3 Months Ended			6 Months Ended
	Mar. 31, 2017 $ / shares	Dec. 31, 2016 $ / shares	Apr. 30, 2017 USD ($) shares	Jan. 29, 2017	May 01, 2016 shares	Apr. 30, 2017 USD ($) employee_stock_purchase_plan employee_stock_purchase_plans shares	May 01, 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 | $			$ 1,400,000,000			$ 1,400,000,000
Dividends declared per share (in dollars per share) | $ / shares	$ 0.10	$ 0.10
Payments of dividends | $						$ 216,000,000	$ 228,000,000
Number of employee stock purchase plans | employee_stock_purchase_plans						2
Employee Stock
Equity [Line Items]
Total unrecognized compensation expense | $			$ 378,000,000			$ 378,000,000
Weighted average period for unrecognized compensation expense to be recognized (in years)						2 years 8 months 5 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			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_plans						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			92			92
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	2	3
Employee Stock Purchase Plan | Employee Stock Option
Equity [Line Items]
Number of shares available for grant (in shares) | shares			22			22