Debt - Schedule of Selected Information about Debt Issues (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Long-term debt, par value, gross	$ 2,350,000,000
Total short-term debt, par value	419,000,000
Total debt, par value	2,769,000,000
Unamortized discount & issuance costs, noncurrent	(25,749,000)
Unamortized discount & issuance costs, current	(3,599,000)
Total debt, unamortized discount & issuance costs,	(29,348,000)
Long-term debt	2,324,251,000	$ 1,629,559,000
Total short-term debt, book value	415,401,000	486,113,000
Total debt, book value	2,739,652,000	2,115,672,000
Fair Value	2,122,772,000
Total short-term debt, fair value	415,401,000
Total debt, fair value	2,538,173,000
Commercial paper
Debt Instrument [Line Items]
Total short-term debt, par value	419,000,000
Unamortized discount & issuance costs, current	(3,599,000)
Total short-term debt, book value	415,401,000	316,564,000
Total short-term debt, fair value	415,401,000
Term Loan
Debt Instrument [Line Items]
Total short-term debt, par value	0
Unamortized discount & issuance costs, current	0
Total short-term debt, book value	0	169,549,000
Total short-term debt, fair value	$ 0
Senior Notes Due 2028
Debt Instrument [Line Items]
Coupon Rate	4.55%
Long-term debt, par value, gross	$ 550,000,000
Unamortized discount & issuance costs, noncurrent	(3,001,000)
Debt	546,999,000	546,283,000
Long-term debt, gross, fair value	$ 542,811,000
Senior Notes Due 2030
Debt Instrument [Line Items]
Coupon Rate	2.15%
Long-term debt, par value, gross	$ 400,000,000
Unamortized discount & issuance costs, noncurrent	(2,868,000)
Debt	397,132,000	396,670,000
Long-term debt, gross, fair value	$ 338,524,000
Senior Notes Due June 15 2032
Debt Instrument [Line Items]
Coupon Rate	4.80%
Long-term debt, par value, gross	$ 250,000,000
Unamortized discount & issuance costs, noncurrent	(3,728,000)
Debt	246,272,000	245,873,000
Long-term debt, gross, fair value	241,083,000
Senior Notes Due June 15 2032 | Consolidation Eliminations | Subsidiaries
Debt Instrument [Line Items]
Long-term debt, net, book value	$ 150,000,000
Senior Notes Due September 15 2034
Debt Instrument [Line Items]
Coupon Rate	5.85%
Long-term debt, par value, gross	$ 450,000,000
Unamortized discount & issuance costs, noncurrent	(5,186,000)
Debt	444,814,000	0
Long-term debt, gross, fair value	$ 451,665,000
Senior Notes Due November 17 2057
Debt Instrument [Line Items]
Coupon Rate	5.275%
Long-term debt, par value, gross	$ 125,000,000
Unamortized discount & issuance costs, noncurrent	(1,557,000)
Debt	123,443,000	123,427,000
Long-term debt, gross, fair value	$ 95,865,000
Junior Subordinated Debentures Due 2061
Debt Instrument [Line Items]
Coupon Rate	4.25%
Long-term debt, par value, gross	$ 325,000,000
Unamortized discount & issuance costs, noncurrent	(7,613,000)
Debt	317,387,000	317,306,000
Long-term debt, gross, fair value	$ 204,620,000
Junior Subordinated Debentures Due 2057
Debt Instrument [Line Items]
Basis spread	1.35%
Term Loan Due 2027
Debt Instrument [Line Items]
Coupon Rate	5.998%
Long-term debt, par value, gross	$ 250,000,000
Unamortized discount & issuance costs, noncurrent	(1,796,000)
Debt	248,204,000	$ 0
Long-term debt, gross, fair value	$ 248,204,000