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Debt and Credit Facilities (Tables)

9 Months Ended

Sep. 30, 2020

Long-term Debt, Unclassified [Abstract]

Schedule of Long-term Debt Instruments


Summary of Total Debt												September 2020						December 2019
Senior unsecured notes:
			Rate						Due
			4.375%						January 15, 2020			$	—					$	500
			Variable						November 30, 2020			351						333
			2.625%						March 15, 2021			750						749
			1.125%						November 30, 2023			640						609
			3.375%						May 15, 2024			590						587
			0.250%						December 3, 2024			987						938
			1.150%						June 15, 2025			644						—
			3.375%						November 1, 2025			747						746
			3.500%						March 15, 2026			992						991
			2.125%						November 30, 2027			871						829
			3.650%						March 7, 2028			596						596
			0.750%						March 1, 2029			929						884
			1.950%						June 15, 2030			988						—
			2.625%						November 30, 2030			749						712
			1.000%						December 3, 2031			865						823
			4.100%						April 1, 2043			392						391
			4.375%						May 15, 2044			395						395
			4.625%						March 15, 2046			981						981
			2.900%						June 15, 2050			641						—

Other												19						26
Total debt												$	13,127					$	11,090
Less current maturities of debt												1,119						859
Total long-term debt												$	12,008					$	10,231


												September 2020						December 2019
Unamortized debt issuance costs												$	71					$	58
Available secured borrowing capacity												$	2,904					$	1,403
Fair value of senior unsecured notes												$	14,366					$	11,910