Grants and other liabilities (Tables)

9 Months Ended

Sep. 30, 2020

Grants and other liabilities [Abstract]

Grants and other non-current liabilities

	Balance as of September 30,		Balance as of December 31,
	2020		2019
	($ in thousands)
Grants		1,043,410		1,087,553
Other Liabilities		185,820		554,199
Grant and other non-current liabilities		1,229,230		1,641,752