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Schedule I Balance Sheet Document (Details) - $ / shares
shares in Millions
Dec. 31, 2021
Dec. 31, 2020
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 3,000 3,000
Common stock, shares issued 941 946
Common Stock, shares outstanding 941 946
Preferred stock, par value $ 0.001 $ 0.001
Preferred stock, shares authorized 10 10
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Parent Company [Member]    
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 3,000 3,000
Common stock, shares issued 941 946
Common Stock, shares outstanding 941 946
Preferred stock, par value $ 0.001 $ 0.001
Preferred stock, shares authorized 10 10
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0