XML 205 R9999.htm IDEA: XBRL DOCUMENT v3.20.4
Label Element Value
Cancellation Of Predecessor Equity sdrl_CancellationOfPredecessorEquity $ 2,827,000,000
Retained Earnings [Member]  
Cancellation Of Predecessor Equity sdrl_CancellationOfPredecessorEquity (3,593,000,000)
AOCI Attributable to Parent [Member]  
Cancellation Of Predecessor Equity sdrl_CancellationOfPredecessorEquity $ 27,000,000
Common Stock [Member]  
Cancellation Of Predecessor Equity, Shares sdrl_CancellationOfPredecessorEquityShares 1,008,000,000
Additional Paid-in Capital [Member]  
Cancellation Of Predecessor Equity sdrl_CancellationOfPredecessorEquity $ 3,322,000,000
Parent [Member]  
Cancellation Of Predecessor Equity sdrl_CancellationOfPredecessorEquity 2,720,000,000
Noncontrolling Interest [Member]  
Cancellation Of Predecessor Equity sdrl_CancellationOfPredecessorEquity 107,000,000
Other Additional Capital [Member]  
Cancellation Of Predecessor Equity sdrl_CancellationOfPredecessorEquity $ 1,956,000,000