Debt - Schedule of Long-term Debt Instruments (Details) $ in Millions, $ in Millions	Sep. 30, 2024 USD ($)	Sep. 30, 2024 AUD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2023 AUD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2023 AUD ($)	Dec. 31, 2010 USD ($)	Aug. 31, 2009 USD ($)	Sep. 30, 2003 USD ($)
Debt Instrument [Line Items]
Unamortized discounts and debt issuance costs	$ (70)		$ (67)		$ (68)
Total long-term debt	13,737		11,535		11,222
Less: current portion of long-term debt (iii)	(3,065)		(1,759)		(1,687)
Long-term debt	10,672		9,776		9,535
Notes acquired							$ 87	$ 87
Short-term debt	153		107		173
Interest Rate Swap
Debt Instrument [Line Items]
Derivative, amount of hedged item	1,375	$ 300	1,375	$ 0	1,375	$ 0
Long-term debt
Debt Instrument [Line Items]
Hedged liability, fair value hedge, cumulative increase (decrease)	$ 27		30		30
0.875% euro Senior Notes due 2023 | Senior notes
Debt Instrument [Line Items]
Debt instrument, stated percentage	0.875%	0.875%
Effective interest rate	0.92%	0.92%
Long-term debt, gross	$ 0		0		530
1.875% euro Senior Notes due 2024 | Senior notes
Debt Instrument [Line Items]
Debt instrument, stated percentage	1.875%	1.875%
Effective interest rate	2.02%	2.02%
Long-term debt, gross	$ 0		663		636
3.875% Senior Notes due 2025 | Senior notes
Debt Instrument [Line Items]
Debt instrument, stated percentage	3.875%	3.875%
Effective interest rate	3.93%	3.93%
Long-term debt, gross	$ 1,250		1,250		1,250
1.250% euro Senior Notes due 2026 | Senior notes
Debt Instrument [Line Items]
Debt instrument, stated percentage	1.25%	1.25%
Effective interest rate	1.25%	1.25%
Long-term debt, gross	$ 840		829		795
3.400% Senior Notes due 2027 | Senior notes
Debt Instrument [Line Items]
Debt instrument, stated percentage	3.40%	3.40%
Effective interest rate	3.49%	3.49%
Long-term debt, gross	$ 600		600		600
4.000% euro Senior Notes due 2027 | Senior notes
Debt Instrument [Line Items]
Debt instrument, stated percentage	4.00%	4.00%
Effective interest rate	4.13%	4.13%
Long-term debt, gross	$ 560		553		530
3.950% Senior Notes due 2028 | Senior notes
Debt Instrument [Line Items]
Debt instrument, stated percentage	3.95%	3.95%
Effective interest rate	4.07%	4.07%
Long-term debt, gross	$ 900		900		900
1.375% euro Senior Notes due 2028 | Senior notes
Debt Instrument [Line Items]
Debt instrument, stated percentage	1.375%	1.375%
Effective interest rate	1.42%	1.42%
Long-term debt, gross	$ 672		663		636
5.200% Senior Notes due 2029 | Senior notes
Debt Instrument [Line Items]
Debt instrument, stated percentage	5.20%	5.20%
Effective interest rate	5.30%	5.30%
Long-term debt, gross	$ 750		0		0
4.125% Sterling Senior Notes due 2029 | Senior notes
Debt Instrument [Line Items]
Debt instrument, stated percentage	4.125%	4.125%
Effective interest rate	4.22%	4.22%
Long-term debt, gross	$ 536		509		490
1.625% euro Senior Notes due 2030 | Senior notes
Debt Instrument [Line Items]
Debt instrument, stated percentage	1.625%	1.625%
Effective interest rate	1.72%	1.72%
Long-term debt, gross	$ 840		829		795
4.000% euro Senior Notes due 2031 | Senior notes
Debt Instrument [Line Items]
Debt instrument, stated percentage	4.00%	4.00%
Effective interest rate	4.10%	4.10%
Long-term debt, gross	$ 840		829		795
6.400% Senior Notes due 2033 (i) | Senior notes
Debt Instrument [Line Items]
Debt instrument, stated percentage	6.40%	6.40%
Effective interest rate	6.43%	6.43%
Long-term debt, gross	$ 213		213		213				$ 300
5.400% Senior Notes due 2034 | Senior notes
Debt Instrument [Line Items]
Debt instrument, stated percentage	5.40%	5.40%
Effective interest rate	5.52%	5.52%
Long-term debt, gross	$ 750		0		0
4.250% euro Senior Notes due 2035 | Senior notes
Debt Instrument [Line Items]
Debt instrument, stated percentage	4.25%	4.25%
Effective interest rate	4.38%	4.38%
Long-term debt, gross	$ 840		829		795
5.125% Senior Notes due 2045 | Senior notes
Debt Instrument [Line Items]
Debt instrument, stated percentage	5.125%	5.125%
Effective interest rate	5.25%	5.25%
Long-term debt, gross	$ 500		500		500
4.400% Senior Notes due 2047 | Senior notes
Debt Instrument [Line Items]
Debt instrument, stated percentage	4.40%	4.40%
Effective interest rate	4.44%	4.44%
Long-term debt, gross	$ 400		400		400
4.500% Senior Notes due 2048 | Senior notes
Debt Instrument [Line Items]
Debt instrument, stated percentage	4.50%	4.50%
Effective interest rate	4.63%	4.63%
Long-term debt, gross	$ 600		600		600
PHP interest bearing loan due 2027 | Line of credit
Debt Instrument [Line Items]
Effective interest rate	6.05%	6.05%
Long-term debt, gross	$ 407		396		400
AUD interest bearing loan due 2029 | Line of credit
Debt Instrument [Line Items]
Effective interest rate	5.10%	5.10%
Long-term debt, gross	$ 565		0		0
U.S. Dollar Commercial Paper | Commercial paper
Debt Instrument [Line Items]
Effective interest rate	5.47%	5.47%
Long-term debt, gross	$ 1,295		1,002		260
Euro Commercial Paper | Commercial paper
Debt Instrument [Line Items]
Effective interest rate	3.69%	3.69%
Long-term debt, gross	$ 383		0		159
Other | Other
Debt Instrument [Line Items]
Long-term debt, gross	$ 66		$ 37		$ 6