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Subsequent Events (Details) - USD ($)
9 Months Ended
Apr. 02, 2020
Dec. 31, 2020
Feb. 13, 2020
Senior Notes      
Subsequent Event [Line Items]      
Principal amount of notes     $ 1,000,000,000.0
Subsequent Event | Senior Notes, Due 2020 | Forecast      
Subsequent Event [Line Items]      
Payoff of senior note   $ 750,000,000  
Subsequent Event | Senior Notes      
Subsequent Event [Line Items]      
Principal amount of notes $ 4,000,000,000.0    
Percent of principal due upon early repayment 100.00%    
Percent of principal due after applicable date 100.00%    
Subsequent Event | Senior Notes | Senior Notes, 5.650%, Due 2025      
Subsequent Event [Line Items]      
Principal amount of notes $ 750,000,000    
Coupon Rate 5.65%    
Pricing (percentage of par) 99.931%    
Period prior to maturity for early redemption 1 month    
Subsequent Event | Senior Notes | Senior Notes, 5.950%, Due 2030      
Subsequent Event [Line Items]      
Principal amount of notes $ 1,250,000,000    
Coupon Rate 5.95%    
Pricing (percentage of par) 99.792%    
Period prior to maturity for early redemption 3 months    
Subsequent Event | Senior Notes | Senior Notes, 6.600%, Due 2040      
Subsequent Event [Line Items]      
Principal amount of notes $ 750,000,000    
Coupon Rate 6.60%    
Pricing (percentage of par) 99.802%    
Period prior to maturity for early redemption 6 months    
Subsequent Event | Senior Notes | Senior Notes, 6.600%, Due 2050      
Subsequent Event [Line Items]      
Principal amount of notes $ 1,250,000,000    
Coupon Rate 6.60%    
Pricing (percentage of par) 99.767%    
Period prior to maturity for early redemption 6 months