Debt (Tables)

6 Months Ended

Jun. 30, 2021

Debt Disclosure [Abstract]

Convertible Debenture Terms

The following table summarizes at June 30, 2021 the related balances, conversion rate and conversion price of the Debentures:

Outstanding principal amount	$	113
Unamortized debt discount	$	35
Net debt carrying amount	$	78
Equity component carrying amount	$	41
Conversion rate (shares of common stock per $1,000 of principal amount)	14.1462
Effective conversion price (per $1,000 of principal amount)	$	70.6904