19. Related Parties

The Company has a long-term pharmaceutical distribution agreement with AmerisourceBergen pursuant to which the Company sources branded and generic pharmaceutical products from AmerisourceBergen principally for its U.S. operations.

Related party transactions (in millions):

	2016		2015		2014
Purchases, net	$	41,889	$	39,360	$	31,439

Trade accounts payable, net		3,456		2,867		2,360

Additionally, AmerisourceBergen receives sourcing services for generic pharmaceutical products through the Company’s global sourcing enterprise WBAD.