Stockholders' Equity (Details) (USD $)	12 Months Ended							12 Months Ended																																																												12 Months Ended						0 Months Ended
	Jul. 31, 2013 Period_of_time		Jul. 31, 2012		Jul. 31, 2011		Aug. 31, 2013	Jul. 31, 2013 Sales Revenue, Goods, Net [Member]	Jul. 31, 2012 Sales Revenue, Goods, Net [Member]	Jul. 31, 2011 Sales Revenue, Goods, Net [Member]	Jul. 31, 2013 Sales Revenue, Services, Net [Member]	Jul. 31, 2012 Sales Revenue, Services, Net [Member]	Jul. 31, 2011 Sales Revenue, Services, Net [Member]	Jul. 31, 2013 Selling and Marketing Expense [Member]	Jul. 31, 2012 Selling and Marketing Expense [Member]	Jul. 31, 2011 Selling and Marketing Expense [Member]	Jul. 31, 2013 Research and Development Expense [Member]	Jul. 31, 2012 Research and Development Expense [Member]	Jul. 31, 2011 Research and Development Expense [Member]	Jul. 31, 2013 General and Administrative Expense [Member]	Jul. 31, 2012 General and Administrative Expense [Member]	Jul. 31, 2011 General and Administrative Expense [Member]	Jul. 31, 2013 Segment, Continuing Operations [Member]	Jul. 31, 2012 Segment, Continuing Operations [Member]	Jul. 31, 2011 Segment, Continuing Operations [Member]	Jul. 31, 2013 Stock Options [Member]	Jul. 31, 2012 Stock Options [Member]	Jul. 31, 2011 Stock Options [Member]	Jul. 31, 2013 Restricted Stock Units (RSUs) [Member]	Jul. 31, 2012 Restricted Stock Units (RSUs) [Member]	Jul. 31, 2011 Restricted Stock Units (RSUs) [Member]	Jul. 31, 2013 Stock Options And Espp [Member]	Jul. 31, 2012 Stock Options And Espp [Member]	Jul. 31, 2011 Stock Options And Espp [Member]	Jul. 31, 2013 Employee Stock [Member]	Jul. 31, 2012 Employee Stock [Member]	Jul. 31, 2011 Employee Stock [Member]	Jul. 31, 2013 Share Based Compensation Expense [Member]	Jul. 31, 2012 Share Based Compensation Expense [Member]	Jul. 31, 2011 Share Based Compensation Expense [Member]	Jul. 31, 2013 Minimum [Member] Stock Options [Member]		Jul. 31, 2012 Minimum [Member] Stock Options [Member]		Jul. 31, 2011 Minimum [Member] Stock Options [Member]		Jul. 31, 2013 Minimum [Member] Employee Stock [Member]		Jul. 31, 2012 Minimum [Member] Employee Stock [Member]		Jul. 31, 2011 Minimum [Member] Employee Stock [Member]		Jul. 31, 2013 Maximum [Member] Stock Options [Member]		Jul. 31, 2012 Maximum [Member] Stock Options [Member]		Jul. 31, 2011 Maximum [Member] Stock Options [Member]		Jul. 31, 2013 Maximum [Member] Employee Stock [Member]		Jul. 31, 2012 Maximum [Member] Employee Stock [Member]		Jul. 31, 2011 Maximum [Member] Employee Stock [Member]		Jul. 31, 2013 Current Program [Member]	Jul. 31, 2012 Current Program [Member]	Jul. 31, 2013 Restated 2005 Plan [Member]	Jul. 31, 2013 Common Stock [Member]	Jul. 31, 2012 Common Stock [Member]	Jul. 31, 2011 Common Stock [Member]	Jul. 31, 2013 Intuit Financial Services [Member]	Jul. 31, 2012 Intuit Financial Services [Member]	Jul. 31, 2011 Intuit Financial Services [Member]	Aug. 19, 2013 Subsequent Event [Member] Common Stock [Member]
Stockholders' Equity (Textuals)
Common stock repurchased, share																																																																				4,820,000	16,864,000	28,234,000
Common stock repurchased, value	$ 292,000,000		$ 900,000,000		$ 1,360,000,000																																																													$ 900,000,000
Stock repurchase program remaining authorized repurchase amount																																																																	1,400,000,000
Stock repurchase program, authorized amount																																																																										2,000,000,000
Stock repurchase program, period in force																																																																										4 years
Common Stock, Dividends, Per Share, Cash Paid	$ 0.68
Payments of Dividends	203,000,000		178,000,000		0
Dividend per share payable							$ 0.19
Common stock, shares authorized	750,000,000		750,000,000																																20,800,000																																96,000,000
Pool Shares Reduced For Each Share Granted	2.3
Pool Shares Increased For Each Share Forfeited	2.3
Award vesting period																										3 years			3 years
Number of years until options vest																										7 years
Stock Offering Period, Months, Employee Stock Purchase Plans	6 months
Stock Accrual Period, Employee Stock Purchase Plans, Number of Accrual Periods	2
Stock Offering Period, Number of Months in Accrual Period	3 months
Percentage of lower of the closing price for stock on the first day last day of the offering period	85.00%
Shares issued during period for Employee Stock Purchase Plans	1,172,822		1,031,483		840,654
Shares available for issuance under Employee Stock Purchase Plan	3,576,366
Market price of common stock used to define in money options exercise price	$ 63.92
Unrecognized compensation cost related to non-vested share based compensation expense																										58,000,000			293,000,000
Expected weighted average vesting period to recognize compensation cost related to share based compensation expense, in years																										2 years 3 months 15 days			2 years 5 months
Treasury stock, shares	130,000,000
Share-based Compensation [Abstract]
Share-based compensation expense	195,000,000		169,000,000		153,000,000			0	0	1,000,000	6,000,000	4,000,000	3,000,000	64,000,000	56,000,000	43,000,000	55,000,000	49,000,000	48,000,000	59,000,000	50,000,000	49,000,000	184,000,000	159,000,000	144,000,000																																														11,000,000	10,000,000	9,000,000
Total tax benefit for stock option, restricted stock and ESPP share-based compensation	(61,000,000)		(51,000,000)		(49,000,000)																								(46,000,000)	(37,000,000)	(33,000,000)	(15,000,000)	(14,000,000)	(16,000,000)
Allocated share-based compensation expense, net of tax	123,000,000		108,000,000		95,000,000
Decrease in net income per share:
Basic																																						$ 0.41	$ 0.36	$ 0.31
Diluted																																						$ 0.41	$ 0.35	$ 0.30
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Expected volatility (range)																																									22.00%		27.00%		27.00%		20.00%		24.00%		27.00%		27.00%		33.00%		30.00%		24.00%		33.00%		33.00%
Weighted average expected volatility																										23.00%	29.00%	28.00%							22.00%	29.00%	29.00%
Risk-free interest rate (range)																																									0.49%		0.43%		0.87%		0.05%		0.00%		0.05%		1.05%		0.85%		1.91%		0.11%		0.10%		0.16%
Expected dividend yield																																									1.02%	[1]	1.02%	[1]	0.00%	[1]	1.04%	[1]	1.00%	[1]	0.00%	[1]	1.18%	[1]	1.20%	[1]	1.20%	[1]	1.17%	[1]	1.20%	[1]	0.00%	[1]
Share-Based Awards Available for Grant [Roll Forward]
Shares available for Grant, Beginning	21,760,000		30,716,000		8,761,000
Additional shares authorized					31,000,000
Options granted, number of shares	2,607,000		3,167,000		3,055,000
Restricted stock units granted	(9,310,000)	[2]	(7,902,000)	[2]	(8,501,000)	[2]
Share-based awards canceled/forfeited/expired	2,277,000	[2],[3]	2,113,000	[2],[3]	2,511,000	[2],[3]
Shares available for Grant, Ending	12,120,000		21,760,000		30,716,000																					12,120,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of shares, Beginning Balance	18,061,000		22,679,000		32,593,000
Options assumed and converted in connection with acquisitions			282,000
Options granted, number of shares	2,607,000		3,167,000		3,055,000
Options exercised, number of shares	(5,826,000)		(7,513,000)		(11,997,000)
Options canceled or expired, number of shares	(636,000)		(554,000)		(972,000)
Number of shares, Ending Balance	14,206,000		18,061,000		22,679,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Weighted average exercise price per share, Beginning Balance	$ 37.49		$ 32.38		$ 28.45
Weighted average exercise price per share, options assumed and converted in connection with acquisitions			$ 54.51
Options granted, weighted average exercise price per share	$ 62.93		$ 51.36		$ 47.70
Options exercised, weighted average exercise price per share	$ 32.79		$ 28.41		$ 25.68
Options canceled or expired, weighted average exercise price per share	$ 44.60		$ 39.43		$ 31.44
Weighted average exercise price per share, Ending Balance	$ 43.77		$ 37.49		$ 32.38
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Number of shares (in thousands), options outstanding	14,206,000		18,061,000		22,679,000
Weighted average remaining contractual life (in years), options outstanding	4 years 11 months 4 days
Weighted average exercise price per share, options outstanding	$ 43.77		$ 37.49		$ 32.38
Aggregate intrinsic value (in millions), options outstanding	276,000,000
Number of shares (in thousands), options exercisable and expected to vest	13,697,000
Weighted average remaining contractual life (in years), options erercisable and expected to vest	4 years 9 months 23 days
Weighted Average Exercise Price per Share. options exercisable and expected to vest	$ 43.24
Aggregate Intrinsic Value (in millions), options exercisable and expected to vest	273,000,000
Number of Shares (in thousands), options exercisable	8,731,000
Weighted Average Remaining Contractual Life (in Years), options exercisable	3 years 3 months 16 days
Weighted Average Exercise Price per Share, options exercisable	$ 35.80
Aggregate Intrinsic Value (in millions), options exercisable	239,000,000
Additional information regarding stock options, restricted stock and ESPP
Weighted average fair value of options granted	$ 11.24		$ 15.22		$ 10.44
Total fair value of options vested	41,000,000		39,000,000		53,000,000
Aggregate intrinsic value of options exercised	166,000,000		202,000,000		261,000,000
Share based compensation expense for stock options, restricted stock and ESPP																													135,000,000	106,000,000	93,000,000	49,000,000	53,000,000	51,000,000
Total tax benefit for stock option, restricted stock and ESPP share-based compensation	61,000,000		51,000,000		49,000,000																								46,000,000	37,000,000	33,000,000	15,000,000	14,000,000	16,000,000
Cash received from option exercises	191,000,000		213,000,000		308,000,000
Cash tax benefits realized related to tax deductions for non-qualified option exercises and disqualifying dispositions under all share-based payment arrangements	60,000,000		72,000,000		99,000,000
Summary of restricted stock unit activity
Nonvested, Number of shares, Beginning Balance	9,607,000		11,055,000		11,531,000
Number of shares granted	4,048,000		3,436,000		3,855,000
Restricted stock units assumed and converted in connection with acquisitions, number of shares			575,000
Vested, Number of Shares	(3,670,000)		(4,763,000)		(3,474,000)
Forfeited, Number of Shares	(801,000)		(696,000)		(857,000)
Nonvested, Number of shares, Ending Balance	9,184,000		9,607,000		11,055,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Nonvested, Weighted Average Grant Date Fair Value, Beginning Balance	$ 46.79		$ 37.92		$ 30.93
Granted, Weighted Average Grant Date Fair Value	$ 62.76		$ 55.02		$ 47.02
Restricted stock units assumed and converted in connection with acquisitions, weighted average grant date fair value			$ 54.51
Vested, Weighted Average Grant Date Fair Value	$ 43.00		$ 34.13		$ 26.33
Forfeited, Weighted Average Grant Date Fair Value	$ 48.16		$ 39.56		$ 31.73
Nonvested, Weighted Average Grant Date Fair Value, Ending Balance	$ 55.23		$ 46.79		$ 37.92
Additional information regarding RSUs
Total fair value of RSUs vested																													224,000,000	258,000,000	150,000,000
Share-based compensation for RSUs																													135,000,000	106,000,000	93,000,000	49,000,000	53,000,000	51,000,000
Total tax benefit for stock option, restricted stock and ESPP share-based compensation	61,000,000		51,000,000		49,000,000																								46,000,000	37,000,000	33,000,000	15,000,000	14,000,000	16,000,000
Actual tax benefits realized for tax deductions for restricted stock units																													$ 77,000,000	$ 46,000,000	$ 36,000,000

[1] Expected dividend yield assumption was zero for fiscal 2011 option grants prior to July 2011. In July 2011 we determined that it was probable that we would pay cash dividends in the future and as a result we began using an expected dividend yield assumption in our valuation models. See “Dividends on Common Stock” above for more information.

[2] Under the terms of our Amended and Restated 2005 Equity Incentive Plan, as amended through July 24, 2012 (2005 Equity Incentive Plan), RSUs granted from the pool of shares available for grant on or after November 1, 2010 reduce the pool by 2.3 shares for each share granted. RSUs forfeited and returned to the pool of shares available for grant increase the pool by 2.3 shares for each share forfeited.

[3] Stock options and restricted stock units canceled, expired or forfeited under our 2005 Equity Incentive Plan, are returned to the pool of shares available for grant. Stock options and restricted stock units canceled, expired or forfeited under older expired plans are not returned to the pool of shares available for grant.