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Business Combinations, Right To Receive, Shares

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Percentage Of Ownership Interests Acquired

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Proportion Of Ownership Interest In Subsidiary If Warrants Are Exercised

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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

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

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The amount of consideration paid or received in respect of both obtaining and losing control of subsidiaries or other businesses. [Refer: Subsidiaries [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 gains (losses) on disposals of investments.

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The increase (decrease) in equity resulting from the disposal of subsidiaries. [Refer: Subsidiaries [member]]

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The amount of investments in associates in an entity's separate financial statements. [Refer: Associates [member]]

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The percentage of voting equity interests acquired in a business combination. [Refer: Business combinations [member]]

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The proportion of ownership interest in an associate attributable to the entity. [Refer: Associates [member]]

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

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Acquisitions and Divestitures - 2019 Acquisitions (Details) $ / shares in Units, R in Millions, $ in Millions, $ in Millions										12 Months Ended
	Nov. 06, 2019 USD ($)	May 17, 2019 USD ($) shares	May 16, 2019	Apr. 17, 2019 USD ($)	Apr. 17, 2019 CAD ($) $ / shares	Feb. 14, 2019 USD ($)	Jan. 04, 2019 USD ($)	Jan. 04, 2019 ZAR (R)	Jan. 01, 2019 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 02, 2020	Mar. 31, 2020	Dec. 20, 2019	Feb. 05, 2019 € / shares
Disclosure of detailed information about business combination [line items]
Increase (decrease) through disposal of subsidiary, equity										$ 255.7	$ (466.2)
Investments in associates										$ 6,439.6	$ 5,984.4
Consideration paid									$ (561.5)
AGT Food & Ingredients Inc.
Disclosure of detailed information about business combination [line items]
Consideration paid				$ 226.5	$ 301.8
Percentage of economic interests acquired					69.90%
ARX Insurance Company (ARX Insurance)
Disclosure of detailed information about business combination [line items]
Consideration paid						$ 17.4
RiverStone Barbados
Disclosure of detailed information about business combination [line items]
Percentage of common shares acquired												60.00%	60.00%	40.00%
Percentage of interests acquired												60.00%	60.00%	40.00%
Common shares \| AGT Food & Ingredients Inc.
Disclosure of detailed information about business combination [line items]
Share price (in dollars per share) \| $ / shares					$ 18.00
AGT Food & Ingredients Inc.
Disclosure of detailed information about business combination [line items]
Ownership percentage in equity method investment				59.60%	59.60%					58.00%
Ownership percentage in investment if warrants are exercised				80.00%	80.00%
Grivalia Properties
Disclosure of detailed information about business combination [line items]
Ownership percentage			53.00%
Net realized gains (losses)		$ 171.3
Increase (decrease) through disposal of subsidiary, equity		$ (466.2)
Eurobank Ergasias S.A
Disclosure of detailed information about business combination [line items]
Ownership percentage		32.40%	18.00%
Eurobank Ergasias S.A \| Non-insurance companies
Disclosure of detailed information about business combination [line items]
Ownership percentage										30.50%	30.50%
Investments in associates										$ 1,166.3	$ 1,164.4
Limited Liability Company FFH Ukraine Holdings (Fairfax Ukraine) \| Universalna
Disclosure of detailed information about business combination [line items]
Cash transferred	$ 4.6
Ownership percentage	30.00%
Fairfax Africa \| Consolidated Infrastructure Group
Disclosure of detailed information about business combination [line items]
Percentage of common shares acquired							41.20%	41.20%
Consideration paid							$ 44.9	R 628.3
Percentage of interests acquired							41.20%	41.20%
Fairfax Africa \| Consolidated Infrastructure Group
Disclosure of detailed information about business combination [line items]
Ownership percentage in equity method investment							49.10%	49.10%
Shareholder's of Grivalia Properties REIC
Disclosure of detailed information about business combination [line items]
Right to receive exchange of shares \| shares		15.8
Pre-merger dividend (in dollars per share) \| € / shares															€ 0.42