CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Unaudited) - USD ($) shares in Millions, $ in Millions	Total	Common stock	Capital in excess of par value	Treasury shares at cost	Accumulated other comprehensive income (loss)	Accumulated deficit	Total stock- holders’ equity	Non- controlling interests
Balance (in shares) at Dec. 31, 2017	342,924
Balance at Dec. 31, 2017	$ 13,716	$ 71	$ 15,960	$ (342)	$ 177	$ (2,339)	$ 13,527	$ 189
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	70					58	58	12
Other comprehensive income	32				32		32
Share-based compensation plans	$ 68		68				68
Shares issued pursuant to stock awards (in shares)	1,320
Shares issued pursuant to stock awards	$ 20			139		(119)	20
Treasury shares and restricted stock unit withholdings (in shares)	(251)
Treasury shares and restricted stock unit withholdings	$ (30)			(30)			(30)
Cumulative effect adjustments	$ 14				3	11	14
Balance (in shares) at Apr. 01, 2018	343,993
Balance at Apr. 01, 2018	$ 13,890	71	16,028	(233)	212	(2,389)	13,689	201
Balance (in shares) at Dec. 31, 2017	342,924
Balance at Dec. 31, 2017	$ 13,716	71	15,960	(342)	177	(2,339)	13,527	189
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,969
Other comprehensive income	$ (51)
Balance (in shares) at Sep. 30, 2018	295,502
Balance at Sep. 30, 2018	$ 10,805	71	16,181	(4,749)	126	(996)	10,633	172
Balance (in shares) at Apr. 01, 2018	343,993
Balance at Apr. 01, 2018	$ 13,890	71	16,028	(233)	212	(2,389)	13,689	201
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	66					54	54	12
Other comprehensive income	(92)				(92)		(92)
Share-based compensation plans	$ 71		71				71
Shares issued pursuant to stock awards (in shares)	369
Shares issued pursuant to stock awards	$ 10			43		(33)	10
Treasury shares and restricted stock unit withholdings (in shares)	(25)
Treasury shares and restricted stock unit withholdings	$ (2)			(2)			(2)
Dividends non-controlling interests	$ (54)							(54)
Balance (in shares) at Jul. 01, 2018	344,337
Balance at Jul. 01, 2018	$ 13,889	71	16,099	(192)	120	(2,368)	13,730	159
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,833					1,820	1,820	13
Other comprehensive income	6				6		6
Share-based compensation plans	$ 82		82				82
Shares issued pursuant to stock awards (in shares)	209
Shares issued pursuant to stock awards	$ 6			24		(18)	6
Treasury shares and restricted stock unit withholdings (in shares)	(49,044)
Treasury shares and restricted stock unit withholdings	$ (4,581)			(4,581)			(4,581)
Shareholder tax on repurchased shares	(353)					(353)	(353)
Dividends common stock	(74)					(74)	(74)
Cumulative effect adjustments	$ (3)					(3)	(3)
Balance (in shares) at Sep. 30, 2018	295,502
Balance at Sep. 30, 2018	$ 10,805	71	16,181	(4,749)	126	(996)	10,633	172
Balance (in shares) at Dec. 31, 2018	292,790
Balance at Dec. 31, 2018	$ 10,690	67	15,460	(3,238)	123	(1,907)	10,505	185
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(16)					(21)	(21)	5
Other comprehensive income	(14)				(14)		(14)
Share-based compensation plans	$ 87		87				87
Shares issued pursuant to stock awards (in shares)	867
Shares issued pursuant to stock awards	$ 32			83		(51)	32
Treasury shares and restricted stock unit withholdings (in shares)	(8,482)
Treasury shares and restricted stock unit withholdings	$ (715)			(715)			(715)
Shareholder tax on repurchased shares	(62)					(62)	(62)
Dividends common stock	$ (71)					(71)	(71)
Balance (in shares) at Mar. 31, 2019	285,175
Balance at Mar. 31, 2019	$ 9,931	67	15,547	(3,870)	109	(2,112)	9,741	190
Balance (in shares) at Dec. 31, 2018	292,790
Balance at Dec. 31, 2018	$ 10,690	67	15,460	(3,238)	123	(1,907)	10,505	185
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	149
Other comprehensive income	(56)
Shareholder tax on repurchased shares	$ 127
Balance (in shares) at Sep. 29, 2019	279,479
Balance at Sep. 29, 2019	$ 9,595	67	15,722	(4,429)	67	(2,037)	9,390	205
Balance (in shares) at Mar. 31, 2019	285,175
Balance at Mar. 31, 2019	$ 9,931	67	15,547	(3,870)	109	(2,112)	9,741	190
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	46					41	41	5
Other comprehensive income	9				9		9
Share-based compensation plans	$ 88		88				88
Shares issued pursuant to stock awards (in shares)	194
Shares issued pursuant to stock awards	$ 6			18		(12)	6
Treasury shares and restricted stock unit withholdings (in shares)	(6,616)
Treasury shares and restricted stock unit withholdings	$ (645)			(645)			(645)
Shareholder tax on repurchased shares	155					155	155
Dividends common stock	$ (70)					(70)	(70)
Balance (in shares) at Jun. 30, 2019	278,753
Balance at Jun. 30, 2019	$ 9,520	67	15,635	(4,497)	118	(1,998)	9,325	195
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	119					109	109	10
Other comprehensive income	(51)				(51)		(51)
Share-based compensation plans	$ 87		87				87
Shares issued pursuant to stock awards (in shares)	815
Shares issued pursuant to stock awards	$ 32			77		(45)	32
Treasury shares and restricted stock unit withholdings (in shares)	(89)
Treasury shares and restricted stock unit withholdings	$ (9)			(9)			(9)
Shareholder tax on repurchased shares	2					2	2
Dividends common stock	$ (105)					(105)	(105)
Balance (in shares) at Sep. 29, 2019	279,479
Balance at Sep. 29, 2019	$ 9,595	$ 67	$ 15,722	$ (4,429)	$ 67	$ (2,037)	$ 9,390	$ 205