Commitments and Contingencies (Schedule of Product Warranty Reserves) (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Movement in Standard and Extended Product Warranty Accrual, Increase (Decrease) [Roll Forward]
Balance at January 1	$ 320	$ 493
Issuances/accruals during the period	87	76
Settlements made during the period/other	(115)	(104)
Balance at March 31	292	465
Current portion			$ 227	$ 358
Non-current portion			65	107
Total	320	493	292	465
Product Warranty
Movement in Standard and Extended Product Warranty Accrual, Increase (Decrease) [Roll Forward]
Balance at January 1	251	239
Issuances/accruals during the period	87	76
Settlements made during the period/other	(89)	(67)
Balance at March 31	249	248
Current portion			184	191
Non-current portion			65	57
Total	251	239	249	248
Legacy Product Warranty
Movement in Standard and Extended Product Warranty Accrual, Increase (Decrease) [Roll Forward]
Balance at January 1	69	254
Issuances/accruals during the period	0	0
Settlements made during the period/other	(26)	(37)
Balance at March 31	43	217
Current portion			43	167
Non-current portion			0	50
Total	$ 69	$ 254	$ 43	$ 217

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

+ References

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

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Carrying value as of the balance sheet date of obligations incurred through that date and due after one year (or beyond the operating cycle if longer) for estimated claims under standard and extended warranty protection rights granted to customers.

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Amount of decrease in the standard and extended product warranty accrual from payments made in cash or in kind to satisfy claims under the terms of the standard and extended product warranty.

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Amount of increase in the standard and extended product warranty accrual from warranties issued.

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