Consolidated Statement Of Shareholders' Equity - USD ($) $ in Millions	Total	Ordinary Shares	Preferred Shares	Ordinary Shares	Preferred Shares	Additional Paid-In Capital	Additional Paid-In Capital Ordinary Shares	Additional Paid-In Capital Preferred Shares	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total Aptiv Shareholders' Equity	Noncontrolling Interest
Balance at Dec. 31, 2018	$ 3,670			$ 3	$ 0	$ 1,639			$ 2,511	$ (694)	$ 3,459	$ 211
Balance, shares at Dec. 31, 2018				260,000,000	0
Net income	1,009								990		990	19
Other comprehensive (loss) income	(19)									(16)	(16)	(3)
Dividends on ordinary shares	(226)					3			(229)		(226)
Dividend payments of consolidated affiliates to minority shareholders	(35)											(35)
Taxes withheld on employees' restricted share award vestings	$ (34)					(34)					(34)
Repurchase of ordinary shares, shares	(5,387,533)			(5,000,000)
Repurchase of ordinary shares	$ (420)					(29)			(391)		(420)
Share-based compensation, in shares				0
Share-based compensation	66					66					66
Adjustment for recently adopted accounting pronouncements	0								9	(9)	0
Balance, shares at Dec. 31, 2019				255,000,000	0
Balance at Dec. 31, 2019	4,011			$ 3	$ 0	1,645			2,890	(719)	3,819	192
Net income	1,822								1,804		1,804	18
Other comprehensive (loss) income	176									174	174	2
Dividends on ordinary shares	(56)					1			(57)		(56)
Dividend payments of consolidated affiliates to minority shareholders	(17)											(17)
Mandatory convertible preferred share cumulative dividends	(35)		$ (32)						35		35
Taxes withheld on employees' restricted share award vestings	$ (33)					(33)					(33)
Repurchase of ordinary shares, shares	(1,059,075)			(1,000,000)
Repurchase of ordinary shares	$ (57)					(6)			(51)		(57)
Issuance of ordinary shares				15,000,000
Issuance of mandatory convertible preferred shares, value of shares		$ 1,115	1,115		$ 12		$ 1,115	$ 1,115
Share-based compensation, in shares				1,000,000
Share-based compensation	60					60					60
Adjustment for recently adopted accounting pronouncements	(1)								(1)		(1)
Balance, shares at Dec. 31, 2020				270,000,000	12,000,000
Balance at Dec. 31, 2020	8,100			$ 3	$ 0	3,897			4,550	(545)	7,905	195
Net income	609								590		590	19
Other comprehensive (loss) income	(127)									(127)	(127)	0
Mandatory convertible preferred share cumulative dividends	(63)		$ (63)						63		63
Taxes withheld on employees' restricted share award vestings	(45)					(45)					(45)
Share-based compensation, in shares				1,000,000
Share-based compensation	87					87					87
Balance, shares at Dec. 31, 2021				271,000,000	12,000,000
Balance at Dec. 31, 2021	$ 8,561			$ 3	$ 0	$ 3,939			$ 5,077	$ (672)	$ 8,347	$ 214