Marketable Securities and Held-to-Maturity Debt Securities (Tables)

9 Months Ended

Sep. 30, 2020

Marketable Securities and Held-to-Maturity Debt Securities

Schedule of marketable securities

(Millions)	September 30, 2020		December 31, 2019
Corporate debt securities	$	7	$	—
Commercial paper		233		85
Certificates of deposit/time deposits		47		10
U.S. treasury securities		150		—
U.S. municipal securities		3		3
Current marketable securities	$	440	$	98
U.S. municipal securities	$	34	$	43
Non-current marketable securities	$	34	$	43
Total marketable securities	$	474	$	141

Marketable securities by contractual maturity

(Millions)	September 30, 2020
Due in one year or less	$	440
Due after one year through five years		14
Due after five years through ten years		20
Total marketable securities	$	474