Debt - Narrative (Details)			1 Months Ended				3 Months Ended	12 Months Ended
	Jul. 31, 2024 USD ($) extension_option	Aug. 02, 2021 USD ($)	Aug. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Aug. 31, 2022 USD ($)	May 31, 2016 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jun. 29, 2021 USD ($)
Debt Instrument [Line Items]
Long-term debt maturing in 2025								$ 1,050,000,000.000
Long-term debt maturing in 2026								350,200,000
Long-term debt maturing in 2027								1,500,000,000
Long-term debt maturing in 2028								400,000,000.0
Long-term debt maturing in 2029								800,000,000.0
Interest expense on long-term debt								354,700,000	$ 374,600,000	$ 348,400,000
Loss on extinguishment of debt								0	12,800,000	0
Long term debt				$ 9,476,700,000				9,226,000,000	9,476,700,000	9,591,600,000
Unused borrowing capacity, amount								3,274,000,000
Interest expense, short-term borrowings								61,000,000.0	42,900,000	42,400,000
Debentures
Debt Instrument [Line Items]
Loss on extinguishment of debt									12,800,000
Line of Credit
Debt Instrument [Line Items]
Long term debt				0				$ 0	$ 0	0
4.050% Senior Notes Due August 8, 2024 | Senior Notes
Debt Instrument [Line Items]
Debt instrument, repurchased face amount			$ 600,000,000.0
Interest rate			4.05%
4.550% Senior Notes Due 2028 | Senior Notes
Debt Instrument [Line Items]
Interest rate			4.55%
Debt instrument, face amount			$ 400,000,000.0
4.800% Senior Notes Due 2031 | Senior Notes
Debt Instrument [Line Items]
Interest rate			4.80%
Debt instrument, face amount			$ 450,000,000.0
3.125% Senior Notes Due June 2024 | Senior Notes
Debt Instrument [Line Items]
Debt instrument, repurchased face amount							$ 500,000,000.0
Interest rate							3.125%
7.375% Debentures | Debentures
Debt Instrument [Line Items]
Debt instrument, repurchased face amount				$ 119,400,000
Interest rate				7.38%				7.375%	7.38%
Long term debt				$ 0				$ 0	$ 0	119,200,000
7.45% Debentures | Debentures
Debt Instrument [Line Items]
Debt instrument, repurchased face amount				$ 3,500,000
Interest rate				7.45%				7.45%	7.45%
Long term debt				$ 0				$ 0	$ 0	$ 3,500,000
4.050% Senior Notes Due August 2024 | Senior Notes
Debt Instrument [Line Items]
Interest rate					4.05%
Debt instrument, face amount					$ 600,000,000.0
4.250% Senior Notes Due August 2025 | Senior Notes
Debt Instrument [Line Items]
Interest rate					4.25%
Debt instrument, face amount					$ 400,000,000.0
New Credit Agreement | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 2,500,000,000
Line of credit facility, number of extension options | extension_option	2
Extension term	1 year
Additional borrowing capacity	$ 750,000,000.0
New Credit Agreement | Letter of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 250,000,000.0
August 2022 Credit Agreement | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity					$ 2,250,000,000
Debt instrument term					5 years
August 2022 Credit Agreement | Line of Credit | Letter of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity					$ 250,000,000.0
August2021 Credit Agreement | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 625,000,000.0
Debt instrument term		5 years
Five Year Credit Agreement, May 2016 | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity						$ 875,000,000.0
Debt instrument term						5 years
June 2021 Credit Agreement | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity											$ 2,000,000,000.000