Other Assets (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Deferred Tax Assets, Net	$ 57	$ 59
Notes, Loans and Financing Receivable, Gross, Current	73		$ 36
Advance Royalties, Noncurrent	7	13
Recoverable Taxes	51	61
Joint venture receivables	39	41
Contractual engineering cost recoveries, current	35	29
Prepaid assets and deposits	24	22
Royalty Agreements, Current	9	17
Nontrade Receivables, Current	0	16
Other Assets, Miscellaneous, Current	5	7
Other Assets, Current	163	193
Contractual engineering cost recoveries, non-current	33	24
Recoverable taxes, non current	19	28
Royalty Agreements, Noncurrent	13
Financial Instruments, Owned, Derivatives and Other Contractual Agreements, at Fair Value		11
Notes Receivable, Related Parties, Noncurrent	6	8
Other	18	20
Other Assets, Noncurrent	146	150
Recoverable Taxes	51	61
Prepaid assets and deposits	24	22
Joint venture receivables	39	41
Nontrade Receivables, Current	0	16
Royalty Agreements, Current	9	17
Contractual engineering cost recoveries, current	35	29
Other Assets, Miscellaneous, Current	5	7
Other Assets, Current	163	193
Recoverable taxes, non current	19	28
Royalty Agreements, Noncurrent	13
Contractual engineering cost recoveries, non-current	33	24
Notes Receivable, Related Parties, Noncurrent	6	8
Financial Instruments, Owned, Derivatives and Other Contractual Agreements, at Fair Value		11
Other	18	20
Other Assets, Noncurrent	146	$ 150
Reimbursement of Engineering costs in current year	20
Reimbursement of Engineering costs in following year	25
Reimbursement for engineering costs expected in year two	12
Reimbursement for engineering costs expected in year three	3
Reimbursement for engineering costs expected in year four	$ 8