Debt and lines of credit (Tables)

9 Months Ended

Sep. 30, 2021

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments

Long-term debt outstanding is as follows:

	September 30,		December 31,
	2021		2020
Notes due 2021 at 2.75%	$	—	$	550
Notes due 2022 at 1.85%	500		500
Notes due 2023 at 2.25%	500		500
Notes due 2024 at 2.625%	300		300
Notes due 2025 at 1.375%	750		750
Notes due 2026 at 1.125%	500		—
Notes due 2027 at 2.90%	500		500
Notes due 2029 at 2.25%	750		750
Notes due 2030 at 1.75%	750		750
Notes due 2031 at 1.90%	500		—
Notes due 2039 at 3.875%	750		750
Notes due 2048 at 4.15%	1,500		1,500
Notes due 2051 at 2.70%	500		—
Total debt	7,800		6,850
Net unamortized discounts, premiums and issuance costs	(61)		(52)
Total debt, including net unamortized discounts, premiums and issuance costs	7,739		6,798
Current portion of long-term debt	(500)		(550)
Long-term debt	$	7,239	$	6,248