| Property, plant and | ||||||||||||||||||||||||||
| Assets(a)(b) | equipment additions(c) | Depreciation and amortization | ||||||||||||||||||||||||
| At December 31 | For the years ended December 31 | For the years ended December 31 | ||||||||||||||||||||||||
| (In millions) | 2013 | 2012 | 2011 | 2013 | 2012 | 2011 | 2013 | 2012 | 2011 | |||||||||||||||||
| Power & Water | $ | 29,526 | $ | 27,174 | $ | 27,074 | $ | 714 | $ | 661 | $ | 770 | $ | 668 | $ | 647 | $ | 605 | ||||||||
| Oil & Gas | 26,181 | 20,099 | 18,855 | 1,185 | 467 | 904 | 479 | 426 | 434 | |||||||||||||||||
| Energy Management | 9,962 | 9,253 | 9,835 | 137 | 155 | 414 | 323 | 287 | 239 | |||||||||||||||||
| Aviation | 32,272 | 25,144 | 23,567 | 1,178 | 781 | 699 | 677 | 644 | 569 | |||||||||||||||||
| Healthcare | 27,956 | 28,458 | 27,981 | 316 | 322 | 378 | 861 | 879 | 869 | |||||||||||||||||
| Transportation | 4,472 | 4,389 | 2,633 | 282 | 724 | 193 | 167 | 90 | 88 | |||||||||||||||||
| Appliances & Lighting | 4,237 | 4,133 | 3,675 | 405 | 485 | 268 | 300 | 265 | 260 | |||||||||||||||||
| GE Capital | 516,829 | 539,351 | 584,643 | 9,978 | 11,879 | 9,871 | 7,738 | 7,348 | 7,480 | |||||||||||||||||
| Corporate items | ||||||||||||||||||||||||||
| and eliminations(d) | 5,125 | 26,998 | 19,740 | 194 | (99) | 56 | 260 | 218 | 186 | |||||||||||||||||
| Total | $ | 656,560 | $ | 684,999 | $ | 718,003 | $ | 14,389 | $ | 15,375 | $ | 13,553 | $ | 11,473 | $ | 10,804 | $ | 10,730 | ||||||||
(a) Assets of discontinued operations, NBCU (our formerly consolidated subsidiary) and our former equity method investment in NBCUniversal LLC are included in Corporate items and eliminations for all periods presented.
(b) Total assets of the Power & Water, Oil & Gas, Energy Management, Aviation, Healthcare, Transportation, Appliances & Lighting and GE Capital operating segments at December 31, 2013, include investment in and advances to associated companies of $507 million, $108 million, $788 million, $1,463 million, $576 million, $10 million, $388 million and $17,348 million, respectively. Investments in and advances to associated companies contributed approximately $(26) million, $18 million, $3 million, $4 million, $(48) million, $0 million, $40 million and $1,809 million to segment pre-tax income of Power & Water, Oil & Gas, Energy Management, Aviation, Healthcare, Transportation, Appliances & Lighting and GE Capital operating segments, respectively, for the year ended December 31, 2013. Aggregate summarized financial information for significant associated companies assuming a 100% ownership interest included: total assets of $98,658 million, primarily financing receivables of $46,655 million; total liabilities of $66,535 million, primarily debt of $40,030 million; revenues totaled $22,692 million; and net earnings totaled $2,431 million.
(c) Additions to property, plant and equipment include amounts relating to principal businesses purchased.
(d) Includes deferred income taxes that are presented as assets for purposes of our consolidating balance sheet presentation.