v3.20.2

Revenue from Contracts with Customers (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	$ 1,187	$ 1,923	$ 2,798	$ 3,764
Operating segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	1,195	1,932	2,813	3,780
Ground Transportation
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	257	666	786	1,348
Building and Construction
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	263	345	554	675
Aerospace
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	237	344	537	664
Industrial Products and Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	239	327	552	626
Packaging
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	195	241	373	451
Products and Services, Net | Operating segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	1,191	1,923	2,802	3,764
Rolled Products [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	880	1,486	2,102	2,897
Rolled Products [Member] | Operating segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	884	1,495	2,113	2,913
Rolled Products [Member] | Ground Transportation
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	250	635	749	1,286
Rolled Products [Member] | Building and Construction
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	33	53	68	102
Rolled Products [Member] | Aerospace
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	173	265	398	511
Rolled Products [Member] | Industrial Products and Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	229	292	514	547
Rolled Products [Member] | Packaging
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	195	241	373	451
Extrusions [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	81	145	214	294
Extrusions [Member] | Operating segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	81	145	214	294
Extrusions [Member] | Ground Transportation
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	7	31	37	62
Extrusions [Member] | Building and Construction
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	0	0	0	0
Extrusions [Member] | Aerospace
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	64	79	139	153
Extrusions [Member] | Industrial Products and Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	10	35	38	79
Extrusions [Member] | Packaging
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	0	0	0	0
Building and Construction Systems [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	230	292	486	573
Building and Construction Systems [Member] | Operating segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	230	292	486	573
Building and Construction Systems [Member] | Ground Transportation
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	0	0	0	0
Building and Construction Systems [Member] | Building and Construction
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	230	292	486	573
Building and Construction Systems [Member] | Aerospace
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	0	0	0	0
Building and Construction Systems [Member] | Industrial Products and Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	0	0	0	0
Building and Construction Systems [Member] | Packaging
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	$ 0	$ 0	$ 0	$ 0

X

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

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-Publisher FASB
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