v3.19.3.a.u2
Leases (Right of Use) (Details)
$ in Millions
Dec. 31, 2019
USD ($)
Operating Lease [Member]  
Lessee Lease Description [Line Items]  
Operating lease right of use asset included in Other assets, including intangibles - net $ 6,633
Total right of use assets 6,633
Operating lease liability - current included in Accounts payable and accrued liabilities 1,211
Operating lease liability - noncurrent included in Other long-term obligations 4,482
Total operating lease liability 5,693
Drilling Rigs and Related Equipment [Member]  
Lessee Lease Description [Line Items]  
Operating lease right of use asset included in Other assets, including intangibles - net 572
Total right of use assets 572
Operating lease liability - current included in Accounts payable and accrued liabilities 221
Operating lease liability - noncurrent included in Other long-term obligations 330
Total operating lease liability 551
Other [Member]  
Lessee Lease Description [Line Items]  
Operating lease right of use asset included in Other assets, including intangibles - net 6,061
Total right of use assets 6,061
Operating lease liability - current included in Accounts payable and accrued liabilities 990
Operating lease liability - noncurrent included in Other long-term obligations 4,152
Total operating lease liability 5,142
Finance Lease [Member]  
Lessee Lease Description [Line Items]  
Finance lease right of use asset included in Property, plant and equipment - net 1,997
Total right of use assets 1,997
Finance lease liability - current included in Accounts payable and accrued liabilities 15
Finance lease liability - current included in Notes and loans payable 84
Finance lease liability - noncurrent included in Long-term debt 1,670
Finance lease liability - noncurrent included in Long-term obligations to equity companies 139
Total finance lease liability $ 1,908