ACQUISITIONS AND DISPOSITIONS - Fair values of assets acquired and liabilities (Details) € in Millions, $ in Millions		3 Months Ended	12 Months Ended
	Jun. 04, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2021 USD ($)	Sep. 29, 2021 USD ($)	Dec. 31, 2019 USD ($)	Dec. 17, 2021 USD ($)	Dec. 17, 2021 EUR (€)	Sep. 30, 2021 USD ($)	Oct. 01, 2020 USD ($)
ASSETS
Goodwill		$ 2,627	$ 3,279		$ 1,842
Measurement period adjustments, goodwill			41
LIABILITIES
Amortization of inventory fair value adjustment		$ 27	0		$ 0
Delphi Technologies PLC
ASSETS
Cash and cash equivalents								$ 460	$ 460
Receivables, net								897	901
Measurement period adjustments, receivables, net				$ (4)
Inventories, net								393	398
Measurement period adjustments, inventories, net				(5)
Prepayments and other current assets								79	77
Measurement period adjustments, prepayments and other current assets				2
Property, plant and equipment, net								1,517	1,548
Measurement period adjustments, property, plant and equipment, net				(31)
Investments and long-term receivables								102	103
Measurement period adjustments, investments and other long-term receivables				(1)
Goodwill								754	710
Measurement period adjustments, goodwill				44
Other intangible assets, net								760	760
Measurement period adjustments, other non current assets				1
Other non-current assets								360	359
Total assets acquired								5,322	5,316
Measurement period adjustments, other non current assets				6
LIABILITIES
Notes payable and other short-term debt								2	2
Accounts payable								693	692
Measurement period adjustments, accounts payable				1
Other current liabilities								618	609
Measurement period adjustments, other current liabilities				9
Long-term debt								934	934
Retirement-related								313	313
Other non-current liabilities								282	286
Measurement period adjustments, total liabilities assumed				(4)
Total liabilities assumed								2,842	2,836
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Net Liabilities Assumed				6
Noncontrolling interests								89	89
Net assets and noncontrolling interest acquired								$ 2,391	$ 2,391
Measurement period adjustments, net assets and non controlling interests				$ 0
AKASOL
ASSETS
Cash and cash equivalents	$ 29		29
Receivables, net	16		16
Inventories, net	42		40
Measurement period adjustments, inventories, net	(2)
Prepayments and other current assets	5		5
Property, plant and equipment, net	106		103
Measurement period adjustments, property, plant and equipment, net	(3)
Goodwill	707		704
Measurement period adjustments, goodwill	(3)
Other intangible assets, net	130		130
Measurement period adjustments, other non current assets			7
Other non-current assets	0		7
Total assets acquired	1,035		1,034
Measurement period adjustments, other non current assets	(1)
LIABILITIES
Notes payable and other short-term debt	8		8
Accounts payable	22		22
Other current liabilities	13		19
Measurement period adjustments, other current liabilities	6
Long-term debt	69		69
Other non-current liabilities	39		32
Measurement period adjustments, total liabilities assumed	(7)
Total liabilities assumed	151		150
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Net Liabilities Assumed	(1)
Noncontrolling interests	96		96			$ 58	€ 51
Net assets and noncontrolling interest acquired	788		$ 788
Measurement period adjustments, net assets and non controlling interests	0
Restricted cash	$ 16