Subsequent events	12 Months Ended
Dec. 31, 2021
Disclosure of events after reporting period [Abstract]
Subsequent events	Subsequent events:On February 1, 2022, the Company and Mitsui O.S.K. Lines, Ltd. ("MOL") completed the previously announced strategic partnership involving Waterfront Shipping. The Company received proceeds of $145 million from MOL for a 40% minority interest in Waterfront Shipping. The Company will continue to operate and retain the remaining 60% majority interest in Waterfront Shipping. The Company will continue to consolidate Waterfront Shipping following the transaction and as a result will recognize the difference between the proceeds received and the carrying value of the 40% interest in Waterfront Shipping as a change in shareholders' equity.

The entire disclosure for events after the reporting period.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 10
-IssueDate 2021-01-01
-Section Disclosure
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=10&code=ifrs-tx-2021-en-r&doctype=Standard&dita_xref=IAS10_g17-22_TI
-URIDate 2021-03-24

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