v3.22.2.2
Financial Instruments - Long-term Debt Instruments (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 27, 2022
Sep. 25, 2022
Dec. 26, 2021
Sep. 26, 2021
Debt Instrument [Line Items]        
Carrying Cost   $ 3,872.5 $ 4,052.5 $ 4,194.6
Less: Deferred debt expenses   24.8 28.2 29.6
Current portion of long-term debt   122.6 200.1 187.6
Long-term debt, carrying cost   3,725.1 3,824.2 3,977.4
Fair Value   3,638.4 4,549.3 4,738.4
Long-term debt, fair value   $ 3,638.4 4,549.3 4,738.4
3.90% Notes Due 2029        
Debt Instrument [Line Items]        
Debt stated interest rate   3.90%    
Carrying Cost   $ 900.0 900.0 900.0
Fair Value   $ 804.6 991.7 1,001.7
3.55% Notes Due 2026        
Debt Instrument [Line Items]        
Debt stated interest rate   3.55%    
Carrying Cost   $ 675.0 675.0 675.0
Fair Value   $ 633.4 725.6 737.2
3.00% Notes Due 2024        
Debt Instrument [Line Items]        
Debt stated interest rate   3.00%    
Carrying Cost   $ 500.0 500.0 500.0
Fair Value   $ 481.1 521.2 529.1
6.35% Notes Due 2040        
Debt Instrument [Line Items]        
Debt stated interest rate   6.35%    
Carrying Cost   $ 500.0 500.0 500.0
Fair Value   $ 497.8 692.8 702.3
3.50% Notes Due 2027        
Debt Instrument [Line Items]        
Debt stated interest rate   3.50%    
Carrying Cost   $ 500.0 500.0 500.0
Fair Value   $ 461.5 539.2 546.2
5.10% Notes Due 2044        
Debt Instrument [Line Items]        
Debt stated interest rate   5.10%    
Carrying Cost   $ 300.0 300.0 300.0
Fair Value   $ 258.3 374.5 375.0
6.60% Debentures Due 2028        
Debt Instrument [Line Items]        
Debt stated interest rate   6.60%    
Carrying Cost   $ 109.9 109.9 109.9
Fair Value   114.1 136.7 137.2
Variable % Notes Due December 30, 2024        
Debt Instrument [Line Items]        
Carrying Cost   325.0 397.5 505.0
Fair Value   325.0 397.5 505.0
Repayments of debt $ 50.0      
Production Financing Facilities        
Debt Instrument [Line Items]        
Carrying Cost   62.6 170.1 204.7
Fair Value   $ 62.6 $ 170.1 $ 204.7