Trade and other receivables - Securitization liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Trade and other receivables, net
Current portion	$ 14	$ 14
Non-current portion	44	47
Total securitization liabilities	$ 58	$ 61

The amount of non-current portion of securitization liabilities at the end of the reporting period.

No definition available.

Name:	maxr_SecuritizationLiabilitiesNoncurrent
Namespace Prefix:	maxr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant