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Fair Value Measurements Fair Value Measurements (Narrative) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Mar. 31, 2012
Fair Value Measurements [Abstract]
Risk Adjusted Interest Rate	4.80%	7.60%
Long-term Debt, Fair Value	$ 412	$ 324	$ 428

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

Name:	us-gaap_LongTermDebtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- Details

Name:	uvv_FairValueMeasurementsAbstract
Namespace Prefix:	uvv_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

Risk Adjusted Interest Rate

+ References

No definition available.

+ Details

Name:	uvv_RiskAdjustedInterestRate
Namespace Prefix:	uvv_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration