Borrowings (Tables)

3 Months Ended

Mar. 31, 2020

Debt Disclosure [Abstract]

Long-term Debt Including Unamortized Debt Discounts and Premiums

The following table lists long-term debt by instrument outstanding as of March 31, 2020 and December 31, 2019.

	Date of	Principal Amount Outstanding
	Issuance	March 31, 2020			December 31, 2019
Fixed-rate Senior Notes:
4.450% due July 22, 2020	07/22/10	$	700		$	700
3.250% due May 21, 2021	05/22/18	600			600
3.225% due September 1, 2022	08/29/12	256			256
2.650% due January 25, 2023	12/07/17	800			800
3.550% due February 1, 2024	10/31/18	500			500
3.000% due March 10, 2025	03/10/15	375			375
4.200% due March 24, 2025	03/24/20	600			—
3.850% due May 21, 2025	05/22/18	750			750
3.450% due February 13, 2026	11/13/15	350			350
3.200% due March 2, 2027	03/02/17	650			650
3.200% due January 25, 2028	12/07/17	700			700
4.000% due February 1, 2029	10/31/18	600			600
3.250% due May 22, 2029	05/22/19	600			600
4.625% due March 22, 2030	03/24/20	500			—
Floating-rate Senior Notes:
Three-month LIBOR + 0.32% due May 21, 2021	05/22/18	600			600
Total Senior Notes		8,581			7,481
Unamortized discount — net		(14		)	(14		)
Debt issuance costs		(45		)	(37		)
Total long-term debt		$	8,522		$	7,430

Annual Maturities on Long-term Debt Outstanding

Annual maturities on long-term debt outstanding at March 31, 2020 are as follows:

	Maturities
2020	$	700
2021	1,200
2022	256
2023	800
2024	500
Thereafter	5,125
Total maturities	8,581
Unamortized discount — net	(14		)
Debt issuance costs	(45		)
Total long-term debt	$	8,522