Basis of Presentation and Nature of Business - Additional Information (Details)	Jul. 02, 2021	Dec. 31, 2022
Alight Holdings
Basis Of Presentation And Nature Of Business [Line Items]
Non-voting ownership percentage held by noncontrolling interest	15.00%	12.00%
Special Purpose Acquisition Company
Basis Of Presentation And Nature Of Business [Line Items]
Business combination, closing date of acquisition	Jul. 02, 2021
Alight \| Special Purpose Acquisition Company \| Alight Holdings
Basis Of Presentation And Nature Of Business [Line Items]
Percentage of economic interest	85.00%	88.00%
Business combination, percentage of voting power	100.00%	100.00%

Basis of presentation and nature of business.

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- Definition

Date when the acquirer obtains control of the acquiree, in YYYY-MM-DD format.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 7
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-Subparagraph (b)
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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

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