Business Segment, Geographic, and Concentration Risk Information - Summary of Customer Revenue and Accounts Receivable Concentration (Detail) - Commercial Platform and Global Supply Chain - Customer Concentration Risk	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Customer Revenue | Customer A
Concentration Risk [Line Items]
Concentration risk, percentage	49.00%	0.00%
Customer Revenue | Customer B
Concentration Risk [Line Items]
Concentration risk, percentage	11.00%	9.00%
Customer Revenue | Customer C
Concentration Risk [Line Items]
Concentration risk, percentage	9.00%	11.00%
Customer Revenue | Customer D
Concentration Risk [Line Items]
Concentration risk, percentage	9.00%	7.00%
Customer Revenue | Customer E
Concentration Risk [Line Items]
Concentration risk, percentage	0.00%	60.00%
Accounts Receivable | Customer A
Concentration Risk [Line Items]
Concentration risk, percentage	36.00%		33.00%
Accounts Receivable | Customer B
Concentration Risk [Line Items]
Concentration risk, percentage	30.00%		24.00%
Accounts Receivable | Customer C
Concentration Risk [Line Items]
Concentration risk, percentage	10.00%		16.00%
Accounts Receivable | Customer D
Concentration Risk [Line Items]
Concentration risk, percentage	0.00%		6.00%