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, 2020	Mar. 31, 2019	Dec. 31, 2019
Customer Revenue | Customer A
Concentration Risk [Line Items]
Concentration risk, percentage	60.00%	0.00%
Customer Revenue | Customer B
Concentration Risk [Line Items]
Concentration risk, percentage	11.00%	22.00%
Customer Revenue | Customer C
Concentration Risk [Line Items]
Concentration risk, percentage	9.00%	21.00%
Customer Revenue | Customer D
Concentration Risk [Line Items]
Concentration risk, percentage	7.00%	12.00%
Accounts Receivable | Customer A
Concentration Risk [Line Items]
Concentration risk, percentage	58.00%		0.00%
Accounts Receivable | Customer B
Concentration Risk [Line Items]
Concentration risk, percentage	14.00%		45.00%
Accounts Receivable | Customer C
Concentration Risk [Line Items]
Concentration risk, percentage	13.00%		31.00%
Accounts Receivable | Customer D
Concentration Risk [Line Items]
Concentration risk, percentage	8.00%		10.00%