Financial Instruments and Fair Value Measures - Debt and Credit Facilities (Details) - USD ($)	1 Months Ended					2 Months Ended	9 Months Ended
	Mar. 31, 2023	Jan. 31, 2023	Jul. 31, 2022	Feb. 28, 2022	Jan. 31, 2022	Feb. 28, 2023	Sep. 30, 2022	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
Floating rate notes due 2023, refinanced | Term loan facilities
Debt and Credit Facilities [Line Items]
Repayments of long-term debt		$ 1,000,000,000
2.8% senior notes due 2023 | Senior notes
Debt and Credit Facilities [Line Items]
Repayments of long-term debt	$ 350,000,000
Stated interest rate (as a percent)	2.80%
Senior Notes Due 2023 At 2.850 Percent | Senior notes
Debt and Credit Facilities [Line Items]
Stated interest rate (as a percent)								2.85%
Senior Notes Due 2023 At 2.850 Percent | Term loan facilities
Debt and Credit Facilities [Line Items]
Repayments of long-term debt		$ 1,000,000,000
3.45% senior notes due 2022 | Senior notes
Debt and Credit Facilities [Line Items]
Repayments of long-term debt					$ 2,900,000,000
Stated interest rate (as a percent)					3.45%
Floating rate notes due 2025 | Term loan facilities
Debt and Credit Facilities [Line Items]
Repayments of long-term debt				$ 2,000,000,000
Aggregate principal amount outstanding				$ 2,000,000,000
Term loan credit agreement term				5 years
Floating rate notes due 2025, refinanced | Term loan facilities
Debt and Credit Facilities [Line Items]
Long-term debt obligations, gross				$ 2,000,000,000
3.25% senior notes due 2022 | Senior notes
Debt and Credit Facilities [Line Items]
Repayments of long-term debt			$ 1,700,000,000
Stated interest rate (as a percent)			3.25%
Senior Notes Due At 3.20 Percent | Senior notes
Debt and Credit Facilities [Line Items]
Repayments of long-term debt							$ 1,000,000,000
Stated interest rate (as a percent)							3.20%
Revolving Credit Facility
Short-Term Borrowings [Line Items]
Line of Credit Facility, Expiration Period	5 years					5 years
Line of Credit Facility, Maximum Borrowing Capacity						$ 4,000,000,000			$ 5,000,000,000
Long-Term Line of Credit								$ 0		$ 0