Debt (Schedule of Long-term Debt) (Details) - USD ($) $ in Millions		Dec. 31, 2023	Aug. 24, 2023	Dec. 31, 2022	Jul. 31, 2022
Debt Instrument [Line Items]
Obligations under finance leases due at various dates through 2054		$ 148		$ 172
Subtotal		13,400		13,953
Unamortized deferred financing costs(4)	[1]	(74)		(74)
Current installments of long-term debt		(1,025)		(506)
Long-term debt, net of unamortized deferred financing costs		12,301		13,373
Senior unsecured notes due 2023, interest rate of 1.125%
Debt Instrument [Line Items]
Senior unsecured notes		$ 0		480
Interest Rate		1.125%
Senior unsecured notes due 2024, interest rate of 3.500%
Debt Instrument [Line Items]
Senior unsecured notes		$ 473		499
Interest Rate		3.50%
Senior unsecured notes due 2024, interest rate of 5.900%
Debt Instrument [Line Items]
Senior unsecured notes		$ 527		2,000
Interest Rate		5.90%			5.90%
Senior unsecured notes due 2025, interest rate of 1.250%
Debt Instrument [Line Items]
Senior unsecured notes		$ 331		320
Interest Rate		1.25%
Senior unsecured notes due 2025, interest rate of 6.050%
Debt Instrument [Line Items]
Senior unsecured notes		$ 1,000		1,750
Interest Rate		6.05%			6.05%
Senior unsecured term loan due 2025(1)
Debt Instrument [Line Items]
Senior unsecured notes	[2]	$ 0		$ 750
Interest Rate				5.934%
Senior unsecured notes due 2026, interest rate of 1.400%
Debt Instrument [Line Items]
Senior unsecured notes		$ 400		$ 400
Interest Rate		1.40%
Senior unsecured notes due 2026, interest rate of 4.777%
Debt Instrument [Line Items]
Senior unsecured notes		$ 1,105		1,067
Interest Rate		4.777%			4.777%
Senior unsecured notes due 2027, interest rate of 2.125%
Debt Instrument [Line Items]
Senior unsecured notes		$ 551		531
Interest Rate		2.125%
Senior unsecured notes due 2027, interest rate of 6.165%
Debt Instrument [Line Items]
Senior unsecured notes		$ 2,000		2,000
Interest Rate		6.165%			6.165%
Senior unsecured term loan due 2027(1)
Debt Instrument [Line Items]
Senior unsecured notes	[2]	$ 880		$ 1,000
Interest Rate		6.943%		5.934%
Senior unsecured notes due 2028, interest rate of 0.625%
Debt Instrument [Line Items]
Senior unsecured notes		$ 552		$ 533
Interest Rate		0.625%
Senior unsecured notes due 2028, interest rate of 6.350%
Debt Instrument [Line Items]
Senior unsecured notes		$ 1,000		0
Interest Rate		6.35%	6.35%
Senior unsecured notes due 2029, interest rate of 5.337%
Debt Instrument [Line Items]
Senior unsecured notes		$ 552		533
Interest Rate		5.337%			5.337%
Senior unsecured notes due 2029, interest rate of 6.330%
Debt Instrument [Line Items]
Senior unsecured notes		$ 750		750
Interest Rate		6.33%			6.33%
Senior unsecured notes due 2030, interest rate of 6.550%
Debt Instrument [Line Items]
Senior unsecured notes		$ 999		0
Interest Rate		6.55%	6.55%
Senior unsecured notes due 2032, interest rate of 6.379%
Debt Instrument [Line Items]
Senior unsecured notes		$ 1,000		1,000
Interest Rate		6.379%			6.379%
Senior unsecured notes due 2033, interest rate of 6.700%
Debt Instrument [Line Items]
Senior unsecured notes		$ 1,000		0
Interest Rate		6.70%	6.70%
Pollution control and industrial revenue bonds due at various dates through 2030(2)
Debt Instrument [Line Items]
Other Long-term debt	[3]	$ 127		164
Pollution control and industrial revenue bonds due at various dates through 2030(2) | Minimum
Debt Instrument [Line Items]
Interest Rate		4.05%
Pollution control and industrial revenue bonds due at various dates through 2030(2) | Maximum
Debt Instrument [Line Items]
Interest Rate		5.00%
Bank loans due at various dates through 2030(3)
Debt Instrument [Line Items]
Other Long-term debt	[4]	$ 5		$ 4
Long-term Debt, Weighted Average Interest Rate, at Point in Time		2.60%		1.30%

[1] Related to the Company's long-term debt, excluding obligations under finance leases.

[2] The interest rate was 6.943% and 5.934% as of December 31, 2023 and 2022, respectively.

[3] Interest rates range from 4.05% to 5.00%.

[4] The weighted average interest rate was 2.6% and 1.3% as of December 31, 2023 and 2022, respectively.