Debt (Tables)

12 Months Ended

Dec. 31, 2020

Summary of Short-term and Long-term Debt Outstanding

A summary of long-term debt outstanding is as follows:


(in millions)	December 31,
	2020		2019
4.0% Senior Notes, due 2025 1	695		694
4.4% Senior Notes, due 2026 2	—		893
2.95% Senior Notes, due 2027 3	495		493
2.5% Senior Notes, due 2029 4	495		495
1.25% Senior Notes, due 2030 5	592		—
6.55% Senior Notes, due 2037 6	290		294
4.5% Senior Notes, due 2048 7	273		490
3.25% Senior Notes, due 2049 8	589		589
2.3% Senior Notes, due 2060 9	681		—



Long-term debt	$	4,110	$	3,948

1Interest payments are due semiannually on June 15 and December 15, and as of December 31, 2020, the unamortized debt discount and issuance costs total $5 million.

2We made a $900 million payment on the early retirement of our 4.4% senior notes in the third quarter of 2020.

3Interest payments are due semiannually on January 22 and July 22, and as of December 31, 2020, the unamortized debt discount and issuance costs total $5 million.

4 Interest payments are due semiannually on June 1 and December 1, and as of December 31, 2020, the unamortized debt discount and issuance costs total $5 million.

5Interest payments are due semiannually on February 15 and August 15, and as of December 31, 2020, the unamortized debt discount and issuance costs total $8 million.

6Interest payments are due semiannually on May 15 and November 15, and as of December 31, 2020, the unamortized debt discount and issuance costs total $3 million.

7Interest payments are due semiannually on May 15 and November 15, and as of December 31, 2020, the unamortized debt discount and issuance costs total $10 million.

8Interest payments are due semiannually on June 1 and December 1, and as of December 31, 2020, the unamortized debt discount and issuance costs total $11 million.

9Interest payments are due semiannually on February 15 and August 15, and as of December 31, 2020, the unamortized debt discount and issuance costs total $19 million.