Employee Benefit Plans (Changes in Projected Benefit Obligations, Plan Assets and Funded Status) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning balance	$ 2,883
Company contributions	75
End balance	2,618	$ 2,883
Amounts recognized in the Consolidated Balance Sheet:
Accounts payable and accrued liabilities	(80)	(78)
Accrued pensions	(645)	(729)
Other postretirement benefits	(629)	(699)
Other Postretirement Benefits
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation, Beginning of year	753	792
Service cost	10	10	$ 15
Interest cost	24	24	31
Actuarial losses (gains) - net	(47)	(27)
Benefits paid	(49)	(48)
Foreign currency translation adjustments	(8)	8
Former glass business changes, net	0	(8)
Other	(2)	2
Projected benefit obligation, End of year	681	753	792
Amounts recognized in the Consolidated Balance Sheet:
Accounts payable and accrued liabilities	(52)	(54)
Other postretirement benefits	(629)	(699)
Net liability recognized	(681)	(753)
United States
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation, Beginning of year	3,462	3,252
Service cost	28	33	48
Interest cost	97	98	142
Actuarial losses (gains) - net	(246)	185
Benefits paid	(125)	(167)
Foreign currency translation adjustments	(88)	165
Settlements and curtailments	(24)	(85)
Former glass business changes, net	0	(1)
Other	4	(18)
Projected benefit obligation, End of year	3,100	3,462	3,252
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning balance	2,883	2,561
Actual return on plan assets	(135)	289
Company contributions	99	87
Participant contributions	0	1
Benefits paid	(102)	(109)
Plan transfers	8	0
Plan settlements	(24)	(95)
Foreign currency translation adjustments	(95)	149
Other	(8)	0
End balance	2,618	2,883	2,561
Funded Status	(482)	(579)
Amounts recognized in the Consolidated Balance Sheet:
Other assets (long-term)	189	173
Accounts payable and accrued liabilities	(26)	(23)
Accrued pensions	(645)	(729)
Net liability recognized	(482)	(579)
United States | Other Postretirement Benefits
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation, Beginning of year	641	692
Service cost	9	10
Interest cost	21	21
Actuarial losses (gains) - net	(38)	(39)
Benefits paid	(45)	(43)
Foreign currency translation adjustments	0	0
Former glass business changes, net	0	0
Other	(1)	0
Projected benefit obligation, End of year	587	641	692
Amounts recognized in the Consolidated Balance Sheet:
Accounts payable and accrued liabilities	(48)	(48)
Other postretirement benefits	(539)	(593)
Net liability recognized	(587)	(641)
United States | United States
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation, Beginning of year	1,706	1,692
Service cost	17	19
Interest cost	57	60
Actuarial losses (gains) - net	(129)	124
Benefits paid	(70)	(104)
Foreign currency translation adjustments	0	0
Settlements and curtailments	0	(84)
Former glass business changes, net	0	0
Other	1	(1)
Projected benefit obligation, End of year	1,582	1,706	1,692
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning balance	1,196	1,115
Actual return on plan assets	(82)	156
Company contributions	75	54
Participant contributions	0	0
Benefits paid	(49)	(47)
Plan transfers	0	0
Plan settlements	0	(82)
Foreign currency translation adjustments	0	0
Other	0	0
End balance	1,140	1,196	1,115
Funded Status	(442)	(510)
Amounts recognized in the Consolidated Balance Sheet:
Other assets (long-term)	0	0
Accounts payable and accrued liabilities	(18)	(16)
Accrued pensions	(424)	(494)
Net liability recognized	(442)	(510)
International | Other Postretirement Benefits
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation, Beginning of year	112	100
Service cost	1	0
Interest cost	3	3
Actuarial losses (gains) - net	(9)	12
Benefits paid	(4)	(5)
Foreign currency translation adjustments	(8)	8
Former glass business changes, net	0	(8)
Other	(1)	2
Projected benefit obligation, End of year	94	112	100
Amounts recognized in the Consolidated Balance Sheet:
Accounts payable and accrued liabilities	(4)	(6)
Other postretirement benefits	(90)	(106)
Net liability recognized	(94)	(112)
International | United States
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation, Beginning of year	1,756	1,560
Service cost	11	14
Interest cost	40	38
Actuarial losses (gains) - net	(117)	61
Benefits paid	(55)	(63)
Foreign currency translation adjustments	(88)	165
Settlements and curtailments	(24)	(1)
Former glass business changes, net	0	(1)
Other	3	(17)
Projected benefit obligation, End of year	1,518	1,756	1,560
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning balance	1,687	1,446
Actual return on plan assets	(53)	133
Company contributions	24	33
Participant contributions	0	1
Benefits paid	(53)	(62)
Plan transfers	(8)	0
Plan settlements	(24)	(13)
Foreign currency translation adjustments	(95)	149
Other	(8)	0
End balance	1,478	1,687	$ 1,446
Funded Status	(40)	(69)
Amounts recognized in the Consolidated Balance Sheet:
Other assets (long-term)	189	173
Accounts payable and accrued liabilities	(8)	(7)
Accrued pensions	(221)	(235)
Net liability recognized	$ (40)	$ (69)