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Condensed Statements of Changes in Shareholders' Equity (Parenthetical)	5 Months Ended
	Dec. 31, 2020 shares
Statement of Stockholders' Equity [Abstract]
Sale of units, net of underwriting discounts and offering costs	32,000,000

X

- Definition

Sale of units net of underwriting discounts and offering costs.

+ References

No definition available.

+ Details

Name:	rklb_SaleOfUnitsNetOfUnderwritingDiscountsAndOfferingCosts
Namespace Prefix:	rklb_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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