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Share-Based Payments (Details 6) - Cash settled performance units
12 Months Ended
Dec. 31, 2019
shares
Cash settled performance shares  
Beginning Balance, Unvested, Shares 50,000,000
Shares, Granted 0
Shares, Vested (33,000,000)
Shares, Forfeited (4,000,000)
Ending Balance, Unvested, Shares 13,000,000