Income Taxes (Deferred Income Tax Assets And Liabilities) (Details) - USD ($) $ in Millions		Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets:
Accrued expenses not currently deductible		$ 586	$ 572
Differences related to non-U.S. operations	[1]	120	119
Net operating losses	[2]	70	57
Income currently recognized for tax		70	75
Foreign tax credit carryforwards		20	109
Other		49	84
Total, deferred tax assets		1,545	1,654
Deferred tax liabilities:
Differences related to non-U.S. operations		176	131
Depreciation and amortization		368	307
Accrued retirement & postretirement benefits - non-U.S. operations		94	41
Other		6	5
Total, deferred tax liabilities		644	484
Balance sheet classifications:
Deferred tax assets		1,138	1,358
Deferred Tax Assets Related To Non US Operations
Deferred tax liabilities:
Valuation allowance, amount		9	15
Deferred Tax Assets Related To US Pension
Deferred tax assets:
Accrued retirement & postretirement benefits		630	638
Deferred Tax Assets Related To Net Operating Loss
Deferred tax liabilities:
Valuation allowance, amount		19	82
Other Noncurrent Assets
Balance sheet classifications:
Deferred tax assets		1,138	1,358
Other Noncurrent Liabilities
Balance sheet classifications:
Other liabilities		$ 237	$ 188

[1] Net of valuation allowances of $9 million in 2015 and $15 million in 2014.

[2] Net of valuation allowances of $19 million in 2015 and $82 million in 2014.