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Debt and Borrowing Arrangements - Debt Redemptions (Details) - Notes Payable
$ in Millions
Mar. 31, 2022
USD ($)
3.625% Notes Due February 2026  
Debt Instrument [Line Items]  
Interest Rate 3.625%
Amount Redeemed $ 130
4.125% Notes Due May 2028  
Debt Instrument [Line Items]  
Interest Rate 4.125%
Amount Redeemed $ 211
2.750% Notes Due April 2030  
Debt Instrument [Line Items]  
Interest Rate 2.75%
Amount Redeemed $ 500
6.500% Notes Due November 2031  
Debt Instrument [Line Items]  
Interest Rate 6.50%
Amount Redeemed $ 17
7.000% Notes Due August 2037  
Debt Instrument [Line Items]  
Interest Rate 7.00%
Amount Redeemed $ 10
6.875% Notes Due February 2038  
Debt Instrument [Line Items]  
Interest Rate 6.875%
Amount Redeemed $ 21
6.875% Notes Due January 2039  
Debt Instrument [Line Items]  
Interest Rate 6.875%
Amount Redeemed $ 8
6.500% Notes Due February 2040  
Debt Instrument [Line Items]  
Interest Rate 6.50%
Amount Redeemed $ 36
4.625% Notes Due May 2048  
Debt Instrument [Line Items]  
Interest Rate 4.625%
Amount Redeemed $ 54