ACQUISITION OF BUSINESSES - Business Services, Genworth MI Canada Inc (Genworth) (Details) - Business services - USD ($) $ in Millions		12 Months Ended
Dec. 12, 2019	Dec. 31, 2019
Genworth MI Canada Inc
Disclosure of detailed information about business combination [line items]
Economic interest prior to syndication to institutional partners	31.00%
Consideration transferred, acquisition-date fair value	$ 854
Bargain purchase gain recognized	4
Identifiable intangible assets recognised as of acquisition date	$ 243
Revenue of acquiree since acquisition date		$ 10
Profit (loss) of acquiree since acquisition date		9
Revenue of acquiree as if combination occurred at beginning of period		207
Profit (loss) of acquiree as if combination occurred at beginning of period		$ 98
Genworth MI Canada Inc
Disclosure of detailed information about business combination [line items]
Proportion of voting rights held in subsidiary		57.00%

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Revenue Of Acquirees As If Combination Occurred At Beginning Of Period

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The fair value, at acquisition date, of the consideration transferred in a business combination. [Refer: Business combinations [member]]

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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

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The amount of any gain recognised in a business combination in which the net of the identifiable assets acquired and the liabilities assumed exceeds the aggregate of the consideration transferred, non-controlling interest in the acquiree and fair value of the acquirer's previously held equity interest in the acquiree. [Refer: Business combinations [member]]

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The amount recognised as of the acquisition date for identifiable intangible assets acquired in a business combination. [Refer: Intangible assets other than goodwill; Business combinations [member]]

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The profit (loss) of the acquiree, since the acquisition date, included in the consolidated statement of comprehensive income. [Refer: Profit (loss)]

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The proportion of ownership interest in a subsidiary attributable to the entity. [Refer: Subsidiaries [member]]

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The proportion of the voting rights in a subsidiary held by the entity. [Refer: Subsidiaries [member]]

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The amount of revenue of the acquiree since the acquisition date included in the consolidated statement of comprehensive income. [Refer: Revenue]

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