Assets and Liabilities of Business Held for Sale - Schedule of Assets and Liabilities of Business Held for Sale (Details) - Held for sale - Subsea Drilling Systems $ in Millions	Jun. 30, 2021 USD ($)
Assets
Current assets	$ 122
Property, plant and equipment	107
Intangible assets	122
All other assets	59
Total assets	410
Liabilities
Current liabilities	57
All other liabilities	7
Total liabilities	64
Total carrying amount of net assets contributed	$ 346