Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2018

Commitments And Contingencies Disclosure [Abstract]

Minimum Payments Under Purchase Commitments and Non-Cancellable Operating Leases

As of December 31, 2018, we had committed to make the following minimum payments under our purchase commitments and non-cancellable operating leases:

	Purchase		Operating
	Commitments		Leases
2019	$	389	$	56
2020		339		46
2021		130		36
2022		22		29
2023		15		18
Thereafter		15		39