Reporting Segments (Details2) (USD $) In Millions	3 Months Ended	9 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Advertising Revenue	$ 1,275	$ 1,122	$ 3,744	$ 3,384
Feature Film	1,335	1,199	3,810	3,705
Affiliate Fees	971	815	2,636	2,339
Ancillary	217	174	793	697
Eliminations	(32)	(35)	(122)	(99)
Total revenues	$ 3,766	$ 3,275	$ 10,861	$ 10,026

Revenue from the sale of advertising time (such as television and radio) or space (newspaper or magazine pages). May also include advertising, marketing and promotional services rendered during the reporting period.

Name:	us-gaap_AdvertisingRevenue
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Revenues from the sale of other goods or rendering of other services, not elsewhere specified in the taxonomy; net of (reduced by) sales adjustments, returns, allowances, and discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 1
-Article 5

+ Details

Name:	us-gaap_OtherSalesRevenueNet
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 1
-Article 5

+ Details

Name:	us-gaap_SalesRevenueNet
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Total of reconciling items between total reportable segments' revenues and consolidated entity revenues.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 131
-Paragraph 32
-Subparagraph a

+ Details

Name:	us-gaap_SegmentReportingReconcilingItemsRevenue
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Revenues earned during the period from affiliates.

+ Details

Name:	via_AffiliateFeesRevenue
Namespace Prefix:	via
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Revenues derived from theatrical releases, home entertainment titles, television revenues and ancillary film revenues.

+ Details

Name:	via_FeatureFilmRevenue
Namespace Prefix:	via
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration