Fair Value Measurements (Details 3) (USD $)	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Other than temporary impairment losses, investments	$ 0	$ 0	$ 0
Number of significant transfers between levels one two and three	0	0	0
Goodwill and intangible asset impairment charge	46,000,000	0	30,000,000
Goodwill Impairment Charges	38,000,000
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Carrying value of intuit health reporting unit			75,000,000
Goodwill and intangible asset impairment charge			30,000,000
Goodwill Impairment Charges			24,000,000
Impairment of intangible assets (excluding goodwill)			6,000,000
Intuit Health [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Goodwill and intangible asset impairment charge		46,000,000
Carrying value of intuit health intangibles and goodwill after impairment	$ 0