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NON-CONTROLLING INTERESTS (AS RESTATED) - Narrative (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Noncontrolling Interest [Abstract]
Weighted average ownership percentage by parent (as a percent)	0.000	0.014	0.000	0.051

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- Definition

Noncontrolling Interest, Weighted Average Ownership Percentage by Parent

+ References

No definition available.

+ Details

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Namespace Prefix:	up_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

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- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration