Note 7 - Debt - Short-term and Long-term Debt (Details) - USD ($) $ in Millions	Sep. 30, 2026	Dec. 31, 2025
Debt, Current	$ 267.5	$ 1,508.9
Finance lease liabilities, current	18.0	8.9
Short-term debt and current portion of long-term debt:	267.5	1,508.9
Finance lease liabilities, noncurrent	20.8	14.7
Syndicated revolving credit facility debt issuance costs	(1.5)	(1.8)
Long-term debt	4,227.8	3,228.3
Total debt	4,495.3	4,737.2
The February 18, 2026 Term Loan Agreement [Member]
Debt, Current	249.5	0.0
Short-term debt and current portion of long-term debt:	249.5	0.0
The 4.500% Senior Notes Due in 2030 [Member]
Debt, Current	0.0	750.0
Short-term debt and current portion of long-term debt:	0.0	750.0
The 5.125% Senior Note Due in 2036 [Member]
Debt, Current	0.0	750.0
Short-term debt and current portion of long-term debt:	0.0	750.0
The 4.125% Senior Notes Due in 2029 [Member]
Long-term debt	603.7	604.8
The 4.450% Senior Notes Due in 2031 [Member]
Long-term debt	496.2	0.0
The 5.750% Senior Notes Due in 2033 [Member]
Long-term debt	493.8	493.0
The 5.250% Senior Notes Due in 2034 [Member]
Long-term debt	588.4	587.3
The 5.250% Senior Notes Due in 2035 [Member]
Long-term debt	693.3	692.7
The 5.125% Senior Notes Due in 2036 [Member]
Long-term debt	495.1	0.0
The 5.500% Senior Notes Due in 2045 [Member]
Long-term debt	346.6	346.5
The 3.625% Senior Notes Due in 2050 [Member]
Long-term debt	$ 491.4	$ 491.1

Amount of debt and lease obligation, classified as current.

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