Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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+ Details

Supplemental financial information - Accumulated other comprehensive income (loss), net of taxes (AOCI) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total	$ 14,577	$ 13,333
AOCI
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total	(254)	(157)	$ (360)	$ (347)
Net actuarial loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total	(249)	(155)
Prior service cost
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total	(1)	0
Unrealized losses on available-for-sale investments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total	(3)	0
Derivative instruments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total	$ (1)	$ (2)