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Long-Term Debt (Tables)
9 Months Ended
Sep. 30, 2021
Debt Disclosure [Abstract]  
Schedule of debt
Long-term debt and finance lease obligations consisted of the following:
(in millions)September 30, 2021December 31, 2020
3.5% Exchangeable Senior Debentures due 2031$549 393 
4.375% Senior Secured Notes due 2023, net of original issue discount 750 750 
4.85% Senior Secured Notes due 2024, net of original issue discount 600 600 
4.45% Senior Secured Notes due 2025, net of original issue discount 599 599 
4.75% Senior Secured Notes due 2027575 575 
4.375% Senior Secured Notes due 2028500 500 
5.45% Senior Secured Notes due 2034, net of original issue discount 399 399 
5.95% Senior Secured Notes due 2043, net of original issue discount 300 300 
6.375% Senior Secured Notes due 2067225 225 
6.25% Senior Secured Notes due 2068 500 500 
Finance lease obligations (note 6)163 168 
Less debt issuance costs, net(45)(50)
Total debt and finance lease obligations5,115 4,959 
Less current portion(567)(410)
Long-term portion of debt and finance lease obligations$4,548 4,549