Net Income Per Share (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2020	Apr. 30, 2019	Apr. 30, 2020	Apr. 30, 2019
Earnings Per Share [Abstract]
Weighted average common shares outstanding	234,133	227,984	232,647	230,922
Effect of dilutive securities	4,458	9,908	5,917	10,236
Weighted average common and dilutive potential common shares outstanding	238,591	237,892	238,564	241,158