Our total debt, including short-term and long-term debt, consisted of the following as of March 31, 2018 and December 31, 2017 (in millions):



	As of March 31, 2018		As of December 31, 2017
Debt:
Short-term debt:
Commercial Paper	$	2,023	$	1,233
2018 Senior Notes (2.50% senior unsecured notes due October 15, 2018)	600		600
Total short-term debt	2,623		1,833
Long-term debt:
2020 Senior Notes (2.75% senior unsecured notes due December 1, 2020)	1,245		1,244
2022 Senior Notes (2.35% senior unsecured notes due September 15, 2022)	495		495
2023 Senior Notes (4.00% senior unsecured notes due October 15, 2023)	792		791
2025 Senior Notes (3.75% senior unsecured notes due December 1, 2025)	1,242		1,242
2027 Senior Notes (3.10% senior unsecured notes due September 15, 2027)	495		495
Total long-term debt	4,269		4,267
Total debt	$	6,892	$	6,100