Employee Benefit Plans (Changes in Projected Benefit Obligations, Plan Assets and Funded Status) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefits paid		$ (13)
Amounts recognized in the Consolidated Balance Sheet:
Accounts payable and accrued liabilities	$ (124)	(131)
Accrued pensions	(740)	(695)
Other postretirement benefits	(731)	(1,015)
Pensions
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation, Beginning of year	5,349	5,775
Service cost	48	57
Interest cost	142	196
Plan amendments	0	0
Actuarial losses (gains) - net	538	(137)
Benefits paid	(233)	(271)
Plan transfers	(4)	0
Foreign currency translation adjustments	(141)	(236)
Settlements, curtailment, and special termination benefits	(2,354)	(8)
Defined Benefit Plan, Change in Benefit Obligation Attributable to Flat Glass Business	(96)	0
Other	3	(27)
Projected benefit obligation, End of year	3,252	5,349
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning balance	4,627	4,839
Actual return on plan assets	470	(19)
Company contributions	204	273
Participant contributions	1	2
Benefits paid	(205)	(249)
Plan transfers	(3)	0
Plan settlements	(2,338)	(17)
Plan expenses and other-net	0	4
Foreign currency translation adjustments	(134)	(214)
Defined Benefit Plan, Change in Plan Assets Attributable to Flat Glass Business	(61)	16
End balance	2,561	4,627
Funded Status	(691)	(722)
Amounts recognized in the Consolidated Balance Sheet:
Other assets (long-term)	110	57
Accounts payable and accrued liabilities	(61)	(67)
Accrued pensions	(740)	(695)
Other postretirement benefits	0	0
Liabilities held for sale	0	(17)
Net liability recognized	(691)	(722)
Other Postretirement Benefits
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation, Beginning of year	1,084	1,196
Service cost	15	16
Interest cost	31	45
Plan amendments	(306)	0
Actuarial losses (gains) - net	13	(101)
Benefits paid	(53)	(52)
Plan transfers	0	0
Foreign currency translation adjustments	2	(19)
Settlements, curtailment, and special termination benefits	0	0
Defined Benefit Plan, Change in Benefit Obligation Attributable to Flat Glass Business	6	(2)
Other	0	1
Projected benefit obligation, End of year	792	1,084
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Funded Status	(792)	(1,084)
Amounts recognized in the Consolidated Balance Sheet:
Other assets (long-term)	0	0
Accounts payable and accrued liabilities	(61)	(63)
Accrued pensions	0	0
Other postretirement benefits	(731)	(1,015)
Liabilities held for sale	0	(6)
Net liability recognized	$ (792)	$ (1,084)