(Components of Long-Term Debt Including Associated Interest Rates and Related Fair Values) (Details) - USD ($) $ in Millions		3 Months Ended
		Dec. 31, 2023	Oct. 01, 2023
Debt Instrument [Line Items]
Long-term Debt, Gross		$ 14,801.1	$ 15,519.3
Long-term Debt, Fair Value		13,601.8	13,426.2
Debt Instrument, Unamortized (Discount) Premium and Debt Issuance Costs, Net		(109.7)	(113.1)
Hedging Liabilities, Noncurrent	[1]	(25.8)	(40.0)
Long-term Debt		14,665.6	15,366.2
2013 10-Year Three Point Eight Five Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	[1]	$ 0.0	750.0
Stated Interest Rate	[1]	3.85%
Debt Instrument, Interest Rate, Effective Percentage	[1],[2]	2.859%
2013 10-Year Three Point Eight Five Percentage Senior Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure	[1]	$ 0.0	749.9
2022 2-Year FloatingrateSeniorNotes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	[3]	$ 500.0	500.0
Stated Interest Rate	[3]	5.998%
Debt Instrument, Interest Rate, Effective Percentage	[2],[3]	6.229%
Debt Instrument, Basis Spread on Variable Rate		0.42%
2022 2-Year FloatingrateSeniorNotes [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure	[3]	$ 500.0	504.2
2017 7-Year PointThreeSevenTwoPercentageYenDenominatedSeniorNotes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	[4]	$ 601.1	569.3
Stated Interest Rate	[4]	0.372%
Debt Instrument, Interest Rate, Effective Percentage	[2],[4]	0.462%
2017 7-Year PointThreeSevenTwoPercentageYenDenominatedSeniorNotes [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure	[4]	$ 601.0	569.3
2018 7-Year Three Point Eight Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 1,250.0	1,250.0
Stated Interest Rate		3.80%
Debt Instrument, Interest Rate, Effective Percentage	[2]	3.721%
2018 7-Year Three Point Eight Percentage Senior Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure		$ 1,227.2	1,210.5
2023 3-Year Four Point Seven Five Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 1,000.0	1,000.0
Stated Interest Rate		4.75%
Debt Instrument, Interest Rate, Effective Percentage	[2]	4.788%
2023 3-Year Four Point Seven Five Percentage Senior Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure		$ 1,004.6	985.5
2016 10-Year Two Point Four Five Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 500.0	500.0
Stated Interest Rate		2.45%
Debt Instrument, Interest Rate, Effective Percentage	[2]	2.511%
2016 10-Year Two Point Four Five Percentage Senior Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure		$ 475.5	463.5
2020 7-Year Two Point Zero Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 500.0	500.0
Stated Interest Rate		2.00%
Debt Instrument, Interest Rate, Effective Percentage	[2]	2.058%
2020 7-Year Two Point Zero Percentage Senior Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure		$ 462.5	446.1
2018 10-Year Three Point Five Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 600.0	600.0
Stated Interest Rate		3.50%
Debt Instrument, Interest Rate, Effective Percentage	[2]	3.529%
2018 10-Year Three Point Five Percentage Senior Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure		$ 575.4	554.7
2018 10-Year Four Point Zero Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 750.0	750.0
Stated Interest Rate		4.00%
Debt Instrument, Interest Rate, Effective Percentage	[2]	3.958%
2018 10-Year Four Point Zero Percentage Senior Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure		$ 739.5	704.5
2019 10-Year Three Point Five Five Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	[1]	$ 1,000.0	1,000.0
Stated Interest Rate	[1]	3.55%
Debt Instrument, Interest Rate, Effective Percentage	[1],[2]	3.84%
Portion of Debt Instrument designated in fair value hedge		$ 350.0
2019 10-Year Three Point Five Five Percentage Senior Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure	[1]	964.1	904.1
2020 10-Year Two Point Two Five Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 750.0	750.0
Stated Interest Rate		2.25%
Debt Instrument, Interest Rate, Effective Percentage	[2]	3.084%
2020 10-Year Two Point Two Five Percentage Senior Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure		$ 659.1	615.1
2020 10-Year Two Point Five Five Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 1,250.0	1,250.0
Stated Interest Rate		2.55%
Debt Instrument, Interest Rate, Effective Percentage	[2]	2.582%
2020 10-Year Two Point Five Five Senior Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure		$ 1,105.0	1,027.1
2022 10-Year Three Percent Senior Notes
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 1,000.0	1,000.0
Stated Interest Rate		3.00%
Debt Instrument, Interest Rate, Effective Percentage	[2]	3.155%
2022 10-Year Three Percent Senior Notes | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure		$ 896.1	828.0
2023 10-Year Four Point Eight Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 500.0	500.0
Stated Interest Rate		4.80%
Debt Instrument, Interest Rate, Effective Percentage	[2]	3.798%
2023 10-Year Four Point Eight Percentage Senior Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure		$ 510.2	470.7
2015 30-Year Four Point Three Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 350.0	350.0
Stated Interest Rate		4.30%
Debt Instrument, Interest Rate, Effective Percentage	[2]	4.348%
2015 30-Year Four Point Three Percentage Senior Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure		$ 312.8	275.3
2017 30-Year Three Point Seven Five Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 500.0	500.0
Stated Interest Rate		3.75%
Debt Instrument, Interest Rate, Effective Percentage	[2]	3.765%
2017 30-Year Three Point Seven Five Percentage Senior Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure		$ 403.7	354.0
2018 30-Year Four Point Five Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 1,000.0	1,000.0
Stated Interest Rate		4.50%
Debt Instrument, Interest Rate, Effective Percentage	[2]	4.504%
2018 30-Year Four Point Five Percentage Senior Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure		$ 911.3	799.0
2019 30-Year Four Point Four Five Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 1,000.0	1,000.0
Stated Interest Rate		4.45%
Debt Instrument, Interest Rate, Effective Percentage	[2]	4.447%
2019 30-Year Four Point Four Five Percentage Senior Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure		$ 909.8	792.7
2020 30-Year Three Point Three Five Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 500.0	500.0
Stated Interest Rate		3.35%
Debt Instrument, Interest Rate, Effective Percentage	[2]	3.362%
2020 30-Year Three Point Three Five Percentage Senior Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure		$ 374.6	328.6
2020 30-Year Three Point Five Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 1,250.0	1,250.0
Stated Interest Rate		3.50%
Debt Instrument, Interest Rate, Effective Percentage	[2]	3.528%
2020 30-Year Three Point Five Percentage Senior Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure		$ 969.4	$ 843.4

[1] Amount includes the change in fair value due to changes in benchmark interest rates related to hedging our October 2023 notes and $350 million of our August 2029 notes. Refer to Note 2, Derivative Financial Instruments, for additional information on our interest rate swap designated as a fair value hedge.

[2] Includes the effects of the amortization of any premium or discount and any gain or loss upon settlement of related treasury locks or forward-starting interest rate swaps utilized to hedge interest rate risk prior to the debt issuance.

[3] Floating rate notes that bear interest at a rate equal to Compounded SOFR (as defined in the February 2024 notes) plus 0.420%, resulting in a stated interest rate of 5.998% at December 31, 2023.

[4] Japanese yen-denominated long-term debt.