v3.22.0.1

Revenue from Contracts with Customers (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	$ 7,504	$ 5,675	$ 7,277
Segment Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	0	(4)	0
External Sales Including Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	7,504	5,679	7,277
Ground Transportation | External Sales Including Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	2,799	1,849	2,545
Building and Construction | External Sales Including Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	1,255	1,117	1,300
Aerospace | External Sales Including Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	631	820	1,307
Industrial Products and Other | External Sales Including Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	1,602	1,120	1,240
Packaging | External Sales Including Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	1,217	773	885
Rolled Products | External Sales Including Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	6,187	4,335	5,609
Rolled Products | Ground Transportation | External Sales Including Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	2,697	1,761	2,428
Rolled Products | Building and Construction | External Sales Including Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	244	154	182
Rolled Products | Aerospace | External Sales Including Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	512	598	1,016
Rolled Products | Industrial Products and Other | External Sales Including Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	1,517	1,049	1,098
Rolled Products | Packaging | External Sales Including Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	1,217	773	885
Building and Construction Systems | External Sales Including Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	1,011	963	1,118
Building and Construction Systems | Ground Transportation | External Sales Including Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	0	0	0
Building and Construction Systems | Building and Construction | External Sales Including Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	1,011	963	1,118
Building and Construction Systems | Aerospace | External Sales Including Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	0	0	0
Building and Construction Systems | Industrial Products and Other | External Sales Including Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	0	0	0
Building and Construction Systems | Packaging | External Sales Including Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	0	0	0
Extrusions | External Sales Including Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	306	381	550
Extrusions | Ground Transportation | External Sales Including Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	102	88	117
Extrusions | Building and Construction | External Sales Including Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	0	0	0
Extrusions | Aerospace | External Sales Including Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	119	222	291
Extrusions | Industrial Products and Other | External Sales Including Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	85	71	142
Extrusions | Packaging | External Sales Including Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Total end-market revenue	$ 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

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