Commitments Commitments (Narrative) (Details) $ in Millions	12 Months Ended
Dec. 31, 2019 USD ($)
Product Warranty Liability [Line Items]
Purchase obligations	$ 594
Maximum
Product Warranty Liability [Line Items]
Product warranty period	10 years

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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