Employee Benefit Plans (Estimated Fair Value on a Recurring Basis) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Pension Benefits U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 7,776	$ 7,879	$ 7,108
Pension Benefits U.S. Plans [Member] | Fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4,971	5,452
Pension Benefits U.S. Plans [Member] | Corporate fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,132	2,279
Pension Benefits U.S. Plans [Member] | U.S. government bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	292	336
Pension Benefits U.S. Plans [Member] | Foreign government debt securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	729	769
Pension Benefits U.S. Plans [Member] | Federal agencies securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,090	1,313
Pension Benefits U.S. Plans [Member] | Municipals securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	219	258
Pension Benefits U.S. Plans [Member] | Other securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	509	497
Pension Benefits U.S. Plans [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,763	1,629
Pension Benefits U.S. Plans [Member] | Common stock - domestic [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,303	1,267
Pension Benefits U.S. Plans [Member] | Common Stock - foreign [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	460	362
Pension Benefits U.S. Plans [Member] | Other investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	600	564
Pension Benefits U.S. Plans [Member] | Short-term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	362	214
Pension Benefits U.S. Plans [Member] | Money Market Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	13	12
Pension Benefits U.S. Plans [Member] | Derivative Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	67	8
Pension Benefits U.S. Plans [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,588	2,610
Pension Benefits U.S. Plans [Member] | Level 1 [Member] | Fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	924	1,154
Pension Benefits U.S. Plans [Member] | Level 1 [Member] | Corporate fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Pension Benefits U.S. Plans [Member] | Level 1 [Member] | U.S. government bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	1
Pension Benefits U.S. Plans [Member] | Level 1 [Member] | Foreign government debt securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Pension Benefits U.S. Plans [Member] | Level 1 [Member] | Federal agencies securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	924	1,153
Pension Benefits U.S. Plans [Member] | Level 1 [Member] | Municipals securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Pension Benefits U.S. Plans [Member] | Level 1 [Member] | Other securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Pension Benefits U.S. Plans [Member] | Level 1 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,593	1,454
Pension Benefits U.S. Plans [Member] | Level 1 [Member] | Common stock - domestic [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,133	1,092
Pension Benefits U.S. Plans [Member] | Level 1 [Member] | Common Stock - foreign [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	460	362
Pension Benefits U.S. Plans [Member] | Level 1 [Member] | Other investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Pension Benefits U.S. Plans [Member] | Level 1 [Member] | Short-term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	53	0
Pension Benefits U.S. Plans [Member] | Level 1 [Member] | Money Market Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1	2
Pension Benefits U.S. Plans [Member] | Level 1 [Member] | Derivative Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	17	0
Pension Benefits U.S. Plans [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4,316	4,650
Pension Benefits U.S. Plans [Member] | Level 2 [Member] | Fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3,958	4,264
Pension Benefits U.S. Plans [Member] | Level 2 [Member] | Corporate fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,073	2,260
Pension Benefits U.S. Plans [Member] | Level 2 [Member] | U.S. government bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	292	335
Pension Benefits U.S. Plans [Member] | Level 2 [Member] | Foreign government debt securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	718	761
Pension Benefits U.S. Plans [Member] | Level 2 [Member] | Federal agencies securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	166	160
Pension Benefits U.S. Plans [Member] | Level 2 [Member] | Municipals securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	219	258
Pension Benefits U.S. Plans [Member] | Level 2 [Member] | Other securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	490	490
Pension Benefits U.S. Plans [Member] | Level 2 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	22	38
Pension Benefits U.S. Plans [Member] | Level 2 [Member] | Common stock - domestic [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	22	38
Pension Benefits U.S. Plans [Member] | Level 2 [Member] | Common Stock - foreign [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Pension Benefits U.S. Plans [Member] | Level 2 [Member] | Other investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	117
Pension Benefits U.S. Plans [Member] | Level 2 [Member] | Short-term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	309	214
Pension Benefits U.S. Plans [Member] | Level 2 [Member] | Money Market Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	12	10
Pension Benefits U.S. Plans [Member] | Level 2 [Member] | Derivative Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	15	7
Pension Benefits U.S. Plans [Member] | Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	872	619
Pension Benefits U.S. Plans [Member] | Level 3 [Member] | Fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	89	34
Pension Benefits U.S. Plans [Member] | Level 3 [Member] | Corporate fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	59	19	32	49
Pension Benefits U.S. Plans [Member] | Level 3 [Member] | U.S. government bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Pension Benefits U.S. Plans [Member] | Level 3 [Member] | Foreign government debt securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	11	8	5	4
Pension Benefits U.S. Plans [Member] | Level 3 [Member] | Federal agencies securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Pension Benefits U.S. Plans [Member] | Level 3 [Member] | Municipals securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Pension Benefits U.S. Plans [Member] | Level 3 [Member] | Other securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	19	7	2	2
Pension Benefits U.S. Plans [Member] | Level 3 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	148	137
Pension Benefits U.S. Plans [Member] | Level 3 [Member] | Common stock - domestic [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	148	137	206	240
Pension Benefits U.S. Plans [Member] | Level 3 [Member] | Common Stock - foreign [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Pension Benefits U.S. Plans [Member] | Level 3 [Member] | Other investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	600	447	531	471
Pension Benefits U.S. Plans [Member] | Level 3 [Member] | Short-term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Pension Benefits U.S. Plans [Member] | Level 3 [Member] | Money Market Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Pension Benefits U.S. Plans [Member] | Level 3 [Member] | Derivative Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	35	1	4	0
Pension Benefits Non-U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	248	224	185
Pension Benefits Non-U.S. Plans [Member] | Fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	123
Pension Benefits Non-U.S. Plans [Member] | Corporate fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	27
Pension Benefits Non-U.S. Plans [Member] | Foreign government debt securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	96	120
Pension Benefits Non-U.S. Plans [Member] | Common Stock - foreign [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	83	54
Pension Benefits Non-U.S. Plans [Member] | Other investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	32	24
Pension Benefits Non-U.S. Plans [Member] | Short-term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6	6
Pension Benefits Non-U.S. Plans [Member] | Derivative Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2	13
Pension Benefits Non-U.S. Plans [Member] | Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2	7
Pension Benefits Non-U.S. Plans [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	32	24
Pension Benefits Non-U.S. Plans [Member] | Level 1 [Member] | Fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Pension Benefits Non-U.S. Plans [Member] | Level 1 [Member] | Corporate fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Pension Benefits Non-U.S. Plans [Member] | Level 1 [Member] | Foreign government debt securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Pension Benefits Non-U.S. Plans [Member] | Level 1 [Member] | Common Stock - foreign [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Pension Benefits Non-U.S. Plans [Member] | Level 1 [Member] | Other investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	32	24
Pension Benefits Non-U.S. Plans [Member] | Level 1 [Member] | Short-term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Pension Benefits Non-U.S. Plans [Member] | Level 1 [Member] | Derivative Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Pension Benefits Non-U.S. Plans [Member] | Level 1 [Member] | Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Pension Benefits Non-U.S. Plans [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	212	180
Pension Benefits Non-U.S. Plans [Member] | Level 2 [Member] | Fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	123
Pension Benefits Non-U.S. Plans [Member] | Level 2 [Member] | Corporate fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	27
Pension Benefits Non-U.S. Plans [Member] | Level 2 [Member] | Foreign government debt securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	96	120
Pension Benefits Non-U.S. Plans [Member] | Level 2 [Member] | Common Stock - foreign [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	83	54
Pension Benefits Non-U.S. Plans [Member] | Level 2 [Member] | Other investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Pension Benefits Non-U.S. Plans [Member] | Level 2 [Member] | Short-term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6	6
Pension Benefits Non-U.S. Plans [Member] | Level 2 [Member] | Derivative Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Pension Benefits Non-U.S. Plans [Member] | Level 2 [Member] | Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Pension Benefits Non-U.S. Plans [Member] | Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4	20
Pension Benefits Non-U.S. Plans [Member] | Level 3 [Member] | Fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Pension Benefits Non-U.S. Plans [Member] | Level 3 [Member] | Corporate fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Pension Benefits Non-U.S. Plans [Member] | Level 3 [Member] | Foreign government debt securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Pension Benefits Non-U.S. Plans [Member] | Level 3 [Member] | Common Stock - foreign [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Pension Benefits Non-U.S. Plans [Member] | Level 3 [Member] | Other investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Pension Benefits Non-U.S. Plans [Member] | Level 3 [Member] | Short-term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Pension Benefits Non-U.S. Plans [Member] | Level 3 [Member] | Derivative Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2	13	13	11
Pension Benefits Non-U.S. Plans [Member] | Level 3 [Member] | Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2	7	8	8
Other Postretirement Benefits U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,352	1,320	1,240
Other Postretirement Benefits U.S. Plans [Member] | Fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	476	553
Other Postretirement Benefits U.S. Plans [Member] | Corporate fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	171	169
Other Postretirement Benefits U.S. Plans [Member] | U.S. government bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	33	26
Other Postretirement Benefits U.S. Plans [Member] | Foreign government debt securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	63	51
Other Postretirement Benefits U.S. Plans [Member] | Federal agencies securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	140	178
Other Postretirement Benefits U.S. Plans [Member] | Municipals securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	15	71
Other Postretirement Benefits U.S. Plans [Member] | Other securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	54	58
Other Postretirement Benefits U.S. Plans [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	430	333
Other Postretirement Benefits U.S. Plans [Member] | Common stock - domestic [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	328	250
Other Postretirement Benefits U.S. Plans [Member] | Common Stock - foreign [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	102	83
Other Postretirement Benefits U.S. Plans [Member] | Other investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits U.S. Plans [Member] | Short-term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	439	432
Other Postretirement Benefits U.S. Plans [Member] | Money Market Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4	1
Other Postretirement Benefits U.S. Plans [Member] | Derivative Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3	1
Other Postretirement Benefits U.S. Plans [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	569	508
Other Postretirement Benefits U.S. Plans [Member] | Level 1 [Member] | Fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	135	175
Other Postretirement Benefits U.S. Plans [Member] | Level 1 [Member] | Corporate fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits U.S. Plans [Member] | Level 1 [Member] | U.S. government bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits U.S. Plans [Member] | Level 1 [Member] | Foreign government debt securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits U.S. Plans [Member] | Level 1 [Member] | Federal agencies securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	135	175
Other Postretirement Benefits U.S. Plans [Member] | Level 1 [Member] | Municipals securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits U.S. Plans [Member] | Level 1 [Member] | Other securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits U.S. Plans [Member] | Level 1 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	430	332
Other Postretirement Benefits U.S. Plans [Member] | Level 1 [Member] | Common stock - domestic [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	328	249
Other Postretirement Benefits U.S. Plans [Member] | Level 1 [Member] | Common Stock - foreign [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	102	83
Other Postretirement Benefits U.S. Plans [Member] | Level 1 [Member] | Other investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits U.S. Plans [Member] | Level 1 [Member] | Short-term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits U.S. Plans [Member] | Level 1 [Member] | Money Market Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4	1
Other Postretirement Benefits U.S. Plans [Member] | Level 1 [Member] | Derivative Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits U.S. Plans [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	782	804
Other Postretirement Benefits U.S. Plans [Member] | Level 2 [Member] | Fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	340	370
Other Postretirement Benefits U.S. Plans [Member] | Level 2 [Member] | Corporate fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	170	165
Other Postretirement Benefits U.S. Plans [Member] | Level 2 [Member] | U.S. government bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	33	26
Other Postretirement Benefits U.S. Plans [Member] | Level 2 [Member] | Foreign government debt securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	63	51
Other Postretirement Benefits U.S. Plans [Member] | Level 2 [Member] | Federal agencies securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5	3
Other Postretirement Benefits U.S. Plans [Member] | Level 2 [Member] | Municipals securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	15	70
Other Postretirement Benefits U.S. Plans [Member] | Level 2 [Member] | Other securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	54	55
Other Postretirement Benefits U.S. Plans [Member] | Level 2 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	1
Other Postretirement Benefits U.S. Plans [Member] | Level 2 [Member] | Common stock - domestic [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	1
Other Postretirement Benefits U.S. Plans [Member] | Level 2 [Member] | Common Stock - foreign [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits U.S. Plans [Member] | Level 2 [Member] | Other investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits U.S. Plans [Member] | Level 2 [Member] | Short-term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	439	432
Other Postretirement Benefits U.S. Plans [Member] | Level 2 [Member] | Money Market Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits U.S. Plans [Member] | Level 2 [Member] | Derivative Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3	1
Other Postretirement Benefits U.S. Plans [Member] | Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1	8
Other Postretirement Benefits U.S. Plans [Member] | Level 3 [Member] | Fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1	8
Other Postretirement Benefits U.S. Plans [Member] | Level 3 [Member] | Corporate fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1	4	4	4
Other Postretirement Benefits U.S. Plans [Member] | Level 3 [Member] | U.S. government bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits U.S. Plans [Member] | Level 3 [Member] | Foreign government debt securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits U.S. Plans [Member] | Level 3 [Member] | Federal agencies securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits U.S. Plans [Member] | Level 3 [Member] | Municipals securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	1	1	1
Other Postretirement Benefits U.S. Plans [Member] | Level 3 [Member] | Other securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	3	5	6
Other Postretirement Benefits U.S. Plans [Member] | Level 3 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits U.S. Plans [Member] | Level 3 [Member] | Common stock - domestic [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits U.S. Plans [Member] | Level 3 [Member] | Common Stock - foreign [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits U.S. Plans [Member] | Level 3 [Member] | Other investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits U.S. Plans [Member] | Level 3 [Member] | Short-term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits U.S. Plans [Member] | Level 3 [Member] | Money Market Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits U.S. Plans [Member] | Level 3 [Member] | Derivative Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0	1	0
Other Postretirement Benefits Non-U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	14	15	13
Other Postretirement Benefits Non-U.S. Plans [Member] | Fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	14
Other Postretirement Benefits Non-U.S. Plans [Member] | Corporate fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Foreign government debt securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	14	15
Other Postretirement Benefits Non-U.S. Plans [Member] | Common Stock - foreign [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Other investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Short-term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Derivative Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Level 1 [Member] | Fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Level 1 [Member] | Corporate fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Level 1 [Member] | Foreign government debt securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Level 1 [Member] | Common Stock - foreign [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Level 1 [Member] | Other investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Level 1 [Member] | Short-term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Level 1 [Member] | Derivative Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Level 1 [Member] | Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	14	15
Other Postretirement Benefits Non-U.S. Plans [Member] | Level 2 [Member] | Fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	14
Other Postretirement Benefits Non-U.S. Plans [Member] | Level 2 [Member] | Corporate fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Level 2 [Member] | Foreign government debt securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	14	15
Other Postretirement Benefits Non-U.S. Plans [Member] | Level 2 [Member] | Common Stock - foreign [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Level 2 [Member] | Other investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Level 2 [Member] | Short-term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Level 2 [Member] | Derivative Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Level 2 [Member] | Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Level 3 [Member] | Fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Level 3 [Member] | Corporate fixed maturity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Level 3 [Member] | Foreign government debt securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Level 3 [Member] | Common Stock - foreign [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Level 3 [Member] | Other investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Level 3 [Member] | Short-term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Level 3 [Member] | Derivative Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Non-U.S. Plans [Member] | Level 3 [Member] | Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 0	$ 0