XML 66 R55.htm IDEA: XBRL DOCUMENT v3.5.0.2
SEGMENT INFORMATION - Segment Information by Segment (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Segment Reporting Information [Line Items]        
Premiums $ 13,650 $ 13,212 $ 27,090 $ 26,460
Services 262 407 522 897
Total revenues - external customers 13,912 13,619 27,612 27,357
Investment income 95 113 195 208
Total revenues 14,007 13,732 27,807 27,565
Benefits 11,509 11,252 22,906 22,257
Operating costs 1,726 1,817 3,494 3,762
Depreciation and amortization 89 90 177 183
Total operating expenses 13,324 13,159 26,577 26,202
Income from operations 683 573 1,230 1,363
Gain on sale of business 0 267 0 267
Interest expense 47 47 94 93
Income before income taxes 636 793 1,136 1,537
Individual Medicare Advantage        
Segment Reporting Information [Line Items]        
Premiums 8,050 7,434 16,077 14,867
Group Medicare Advantage        
Segment Reporting Information [Line Items]        
Premiums 1,085 1,398 2,162 2,792
Medicare stand-alone PDP        
Segment Reporting Information [Line Items]        
Premiums 1,015 985 2,054 1,988
Total Medicare        
Segment Reporting Information [Line Items]        
Premiums 10,150 9,817 20,293 19,647
Fully-insured        
Segment Reporting Information [Line Items]        
Premiums 2,487 2,492 4,821 4,970
Specialty        
Segment Reporting Information [Line Items]        
Premiums 321 331 639 664
Medicaid and other        
Segment Reporting Information [Line Items]        
Premiums 692 572 1,337 1,179
Provider        
Segment Reporting Information [Line Items]        
Services 74 232 145 549
ASO and other        
Segment Reporting Information [Line Items]        
Services 181 168 363 334
Pharmacy        
Segment Reporting Information [Line Items]        
Services 7 7 14 14
Intersegment revenues        
Segment Reporting Information [Line Items]        
Total revenues (6,192) (5,687) (12,327) (11,226)
Intersegment revenues | Retail        
Segment Reporting Information [Line Items]        
Total revenues 0 0 0 0
Intersegment revenues | Group        
Segment Reporting Information [Line Items]        
Total revenues 23 22 44 44
Intersegment revenues | Healthcare Services        
Segment Reporting Information [Line Items]        
Total revenues 6,169 5,665 12,283 11,182
Intersegment revenues | Services        
Segment Reporting Information [Line Items]        
Total revenues (4,759) (4,454) (9,534) (8,843)
Intersegment revenues | Services | Retail        
Segment Reporting Information [Line Items]        
Total revenues 0 0 0 0
Intersegment revenues | Services | Group        
Segment Reporting Information [Line Items]        
Total revenues 23 22 44 44
Intersegment revenues | Services | Healthcare Services        
Segment Reporting Information [Line Items]        
Total revenues 4,736 4,432 9,490 8,799
Intersegment revenues | Products        
Segment Reporting Information [Line Items]        
Total revenues (1,433) (1,233) (2,793) (2,383)
Intersegment revenues | Products | Retail        
Segment Reporting Information [Line Items]        
Total revenues 0 0 0 0
Intersegment revenues | Products | Group        
Segment Reporting Information [Line Items]        
Total revenues 0 0 0 0
Intersegment revenues | Products | Healthcare Services        
Segment Reporting Information [Line Items]        
Total revenues 1,433 1,233 2,793 2,383
Operating Segments | Retail        
Segment Reporting Information [Line Items]        
Premiums 12,024 11,555 23,859 23,133
Services 2 2 4 6
Total revenues - external customers 12,026 11,557 23,863 23,139
Investment income 25 31 52 58
Total revenues 12,051 11,588 23,915 23,197
Benefits 10,432 10,068 20,810 20,004
Operating costs 1,241 1,213 2,517 2,467
Depreciation and amortization 58 47 114 91
Total operating expenses 11,731 11,328 23,441 22,562
Income from operations 320 260 474 635
Gain on sale of business   0   0
Interest expense 0 0 0 0
Income before income taxes 320 260 474 635
Operating Segments | Group        
Segment Reporting Information [Line Items]        
Premiums 1,617 1,648 3,212 3,308
Services 189 174 379 343
Total revenues - external customers 1,806 1,822 3,591 3,651
Investment income 4 6 9 11
Total revenues 1,833 1,850 3,644 3,706
Benefits 1,274 1,341 2,467 2,567
Operating costs 434 444 870 897
Depreciation and amortization 24 22 48 45
Total operating expenses 1,732 1,807 3,385 3,509
Income from operations 101 43 259 197
Gain on sale of business   0   0
Interest expense 0 0 0 0
Income before income taxes 101 43 259 197
Operating Segments | Healthcare Services        
Segment Reporting Information [Line Items]        
Premiums 0 0 0 0
Services 68 228 133 543
Total revenues - external customers 68 228 133 543
Investment income 7 0 14 0
Total revenues 6,244 5,893 12,430 11,725
Benefits 0 0 0 0
Operating costs 5,941 5,630 11,854 11,190
Depreciation and amortization 32 40 64 82
Total operating expenses 5,973 5,670 11,918 11,272
Income from operations 271 223 512 453
Gain on sale of business   0   0
Interest expense 0 0 0 0
Income before income taxes 271 223 512 453
Operating Segments | Individual Medicare Advantage | Retail        
Segment Reporting Information [Line Items]        
Premiums 8,050 7,434 16,077 14,867
Operating Segments | Individual Medicare Advantage | Group        
Segment Reporting Information [Line Items]        
Premiums 0 0 0 0
Operating Segments | Individual Medicare Advantage | Healthcare Services        
Segment Reporting Information [Line Items]        
Premiums 0 0 0 0
Operating Segments | Group Medicare Advantage | Retail        
Segment Reporting Information [Line Items]        
Premiums 1,085 1,398 2,162 2,792
Operating Segments | Group Medicare Advantage | Group        
Segment Reporting Information [Line Items]        
Premiums 0 0 0 0
Operating Segments | Group Medicare Advantage | Healthcare Services        
Segment Reporting Information [Line Items]        
Premiums 0 0 0 0
Operating Segments | Medicare stand-alone PDP | Retail        
Segment Reporting Information [Line Items]        
Premiums 1,015 985 2,054 1,988
Operating Segments | Medicare stand-alone PDP | Group        
Segment Reporting Information [Line Items]        
Premiums 0 0 0 0
Operating Segments | Medicare stand-alone PDP | Healthcare Services        
Segment Reporting Information [Line Items]        
Premiums 0 0 0 0
Operating Segments | Total Medicare | Retail        
Segment Reporting Information [Line Items]        
Premiums 10,150 9,817 20,293 19,647
Operating Segments | Total Medicare | Group        
Segment Reporting Information [Line Items]        
Premiums 0 0 0 0
Operating Segments | Total Medicare | Healthcare Services        
Segment Reporting Information [Line Items]        
Premiums 0 0 0 0
Operating Segments | Fully-insured | Retail        
Segment Reporting Information [Line Items]        
Premiums 1,130 1,113 2,127 2,207
Operating Segments | Fully-insured | Group        
Segment Reporting Information [Line Items]        
Premiums 1,357 1,379 2,694 2,763
Operating Segments | Fully-insured | Healthcare Services        
Segment Reporting Information [Line Items]        
Premiums 0 0 0 0
Operating Segments | Specialty | Retail        
Segment Reporting Information [Line Items]        
Premiums 66 66 131 129
Operating Segments | Specialty | Group        
Segment Reporting Information [Line Items]        
Premiums 255 265 508 535
Operating Segments | Specialty | Healthcare Services        
Segment Reporting Information [Line Items]        
Premiums 0 0 0 0
Operating Segments | Medicaid and other | Retail        
Segment Reporting Information [Line Items]        
Premiums 678 559 1,308 1,150
Operating Segments | Medicaid and other | Group        
Segment Reporting Information [Line Items]        
Premiums 5 4 10 10
Operating Segments | Medicaid and other | Healthcare Services        
Segment Reporting Information [Line Items]        
Premiums 0 0 0 0
Operating Segments | Provider | Retail        
Segment Reporting Information [Line Items]        
Services 0 0 0 0
Operating Segments | Provider | Group        
Segment Reporting Information [Line Items]        
Services 13 11 26 20
Operating Segments | Provider | Healthcare Services        
Segment Reporting Information [Line Items]        
Services 61 221 119 529
Operating Segments | ASO and other | Retail        
Segment Reporting Information [Line Items]        
Services 2 2 4 6
Operating Segments | ASO and other | Group        
Segment Reporting Information [Line Items]        
Services 176 163 353 323
Operating Segments | ASO and other | Healthcare Services        
Segment Reporting Information [Line Items]        
Services 0 0 0 0
Operating Segments | Pharmacy | Retail        
Segment Reporting Information [Line Items]        
Services 0 0 0 0
Operating Segments | Pharmacy | Group        
Segment Reporting Information [Line Items]        
Services 0 0 0 0
Operating Segments | Pharmacy | Healthcare Services        
Segment Reporting Information [Line Items]        
Services 7 7 14 14
Other Businesses        
Segment Reporting Information [Line Items]        
Premiums 9 9 19 19
Services 3 3 6 5
Total revenues - external customers 12 12 25 24
Investment income 16 22 31 37
Total revenues 28 34 56 61
Benefits 31 21 56 44
Operating costs 4 4 8 7
Depreciation and amortization 0 0 0 0
Total operating expenses 35 25 64 51
Income from operations (7) 9 (8) 10
Gain on sale of business   0   0
Interest expense 0 0 0 0
Income before income taxes (7) 9 (8) 10
Other Businesses | Individual Medicare Advantage        
Segment Reporting Information [Line Items]        
Premiums 0 0 0 0
Other Businesses | Group Medicare Advantage        
Segment Reporting Information [Line Items]        
Premiums 0 0 0 0
Other Businesses | Medicare stand-alone PDP        
Segment Reporting Information [Line Items]        
Premiums 0 0 0 0
Other Businesses | Total Medicare        
Segment Reporting Information [Line Items]        
Premiums 0 0 0 0
Other Businesses | Fully-insured        
Segment Reporting Information [Line Items]        
Premiums 0 0 0 0
Other Businesses | Specialty        
Segment Reporting Information [Line Items]        
Premiums 0 0 0 0
Other Businesses | Medicaid and other        
Segment Reporting Information [Line Items]        
Premiums 9 9 19 19
Other Businesses | Provider        
Segment Reporting Information [Line Items]        
Services 0 0 0 0
Other Businesses | ASO and other        
Segment Reporting Information [Line Items]        
Services 3 3 6 5
Other Businesses | Pharmacy        
Segment Reporting Information [Line Items]        
Services 0 0 0 0
Eliminations/ Corporate        
Segment Reporting Information [Line Items]        
Premiums 0 0 0 0
Services 0 0 0 0
Total revenues - external customers 0 0 0 0
Investment income 43 54 89 102
Total revenues (6,149) (5,633) (12,238) (11,124)
Benefits (228) (178) (427) (358)
Operating costs (5,894) (5,474) (11,755) (10,799)
Depreciation and amortization (25) (19) (49) (35)
Total operating expenses (6,147) (5,671) (12,231) (11,192)
Income from operations (2) 38 (7) 68
Gain on sale of business   267   267
Interest expense 47 47 94 93
Income before income taxes (49) 258 (101) 242
Eliminations/ Corporate | Individual Medicare Advantage        
Segment Reporting Information [Line Items]        
Premiums 0 0 0 0
Eliminations/ Corporate | Group Medicare Advantage        
Segment Reporting Information [Line Items]        
Premiums 0 0 0 0
Eliminations/ Corporate | Medicare stand-alone PDP        
Segment Reporting Information [Line Items]        
Premiums 0 0 0 0
Eliminations/ Corporate | Total Medicare        
Segment Reporting Information [Line Items]        
Premiums 0 0 0 0
Eliminations/ Corporate | Fully-insured        
Segment Reporting Information [Line Items]        
Premiums 0 0 0 0
Eliminations/ Corporate | Specialty        
Segment Reporting Information [Line Items]        
Premiums 0 0 0 0
Eliminations/ Corporate | Medicaid and other        
Segment Reporting Information [Line Items]        
Premiums 0 0 0 0
Eliminations/ Corporate | Provider        
Segment Reporting Information [Line Items]        
Services 0 0 0 0
Eliminations/ Corporate | ASO and other        
Segment Reporting Information [Line Items]        
Services 0 0 0 0
Eliminations/ Corporate | Pharmacy        
Segment Reporting Information [Line Items]        
Services $ 0 $ 0 $ 0 $ 0