ACCOUNTS RECEIVABLE, NET - Aging Analysis (Details) - USD ($)	Jul. 31, 2020	Jul. 31, 2019
ACCOUNTS RECEIVABLE, NET
1-3 months	$ 27,027	$ 364,430
4-6 months	67,441	147,722
7-12 months	1,130,348	894,771
More than 1 year	1,094,737	130,670
Total gross accounts receivable	$ 2,319,553	$ 1,537,593

The amount of accounts receivable before allowance for credit loss, that is greater than 360 days past due.

No definition available.

Name:	atif_AccountsReceivableGrossCurrentGreaterThanThreeHundredAndSixtyDaysPastDue
Namespace Prefix:	atif_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of accounts receivable before allowance for credit loss, that is 90-180 days past due.

+ References

No definition available.

+ Details

Name:	atif_AccountsReceivableGrossCurrentNinetyToOneHundredAndEightyDaysPastDue
Namespace Prefix:	atif_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of accounts receivable before allowance for credit loss, that is 180-360 days past due.

+ References

No definition available.

+ Details

Name:	atif_AccountsReceivableGrossCurrentOneHundredAndEightyDaysToThreeHundredAndSixtyDaysPastDue
Namespace Prefix:	atif_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of accounts receivable before allowance for credit loss, that is fewer than 90 days past due.

+ References

No definition available.

+ Details

Name:	atif_AccountsReceivableGrossCurrentOneToNinetyDaysPastDue
Namespace Prefix:	atif_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=121593590&loc=d3e4428-111522

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=121593590&loc=d3e4531-111522

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration