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Supplemental Condensed Consolidating Financial Information - Schedule of Condensed Consolidating Comprehensive Income Statement (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Condensed Statement of Income Captions [Line Items] |  |  |  |
Revenues | $ 12,602 | $ 11,529 | $ 25,119 | $ 22,952
Salaries and benefits | 5,837 | 5,274 | 11,484 | 10,563
Supplies | 2,118 | 1,917 | 4,159 | 3,832
Other operating expenses | 2,362 | 2,118 | 4,661 | 4,228
Equity in earnings of affiliates | (8) | (7) | (19) | (16)
Depreciation and amortization | 636 | 562 | 1,255 | 1,115
Interest expense (income) | 477 | 436 | 938 | 867
Gains on sales of facilities | (18) | (9) | (17) | (414)
Total expenses including equity in earnings of affiliates | 11,404 | 10,291 | 22,461 | 20,175
Income (loss) before income taxes | 1,198 | 1,238 | 2,658 | 2,777
Provision (benefit) for income taxes | 271 | 272 | 550 | 529
Net income (loss) | 927 | 966 | 2,108 | 2,248
Net income attributable to noncontrolling interests | 144 | 146 | 286 | 284
Net income (loss) attributable to HCA Healthcare, Inc. | 783 | 820 | 1,822 | 1,964
Comprehensive income (loss) attributable to HCA Healthcare, Inc. | 726 | 756 | 1,772 | 1,981
HCA Healthcare, Inc. Issuer [Member] |  |  |  |
Condensed Statement of Income Captions [Line Items] |  |  |  |
Other operating expenses | 1 | 4 | 3 | 5
Equity in earnings of affiliates | (822) | (852) | (1,848) | (1,942)
Interest expense (income) | 16 | 16 | 32 | 32
Total expenses including equity in earnings of affiliates | (805) | (832) | (1,813) | (1,905)
Income (loss) before income taxes | 805 | 832 | 1,813 | 1,905
Provision (benefit) for income taxes | 22 | 12 | (9) | (59)
Net income (loss) | 783 | 820 | 1,822 | 1,964
Net income (loss) attributable to HCA Healthcare, Inc. | 783 | 820 | 1,822 | 1,964
Comprehensive income (loss) attributable to HCA Healthcare, Inc. | 726 | 756 | 1,772 | 1,981
HCA Inc. Issuer [Member] |  |  |  |
Condensed Statement of Income Captions [Line Items] |  |  |  |
Interest expense (income) | 1,010 | 867 | 2,005 | 1,704
Total expenses including equity in earnings of affiliates | 1,010 | 867 | 2,005 | 1,704
Income (loss) before income taxes | (1,010) | (867) | (2,005) | (1,704)
Provision (benefit) for income taxes | (235) | (201) | (466) | (396)
Net income (loss) | (775) | (666) | (1,539) | (1,308)
Net income (loss) attributable to HCA Healthcare, Inc. | (775) | (666) | (1,539) | (1,308)
Comprehensive income (loss) attributable to HCA Healthcare, Inc. | (806) | (656) | (1,588) | (1,271)
Subsidiary Guarantors [Member] |  |  |  |
Condensed Statement of Income Captions [Line Items] |  |  |  |
Revenues | 7,129 | 6,774 | 14,353 | 13,550
Salaries and benefits | 3,199 | 3,025 | 6,336 | 6,094
Supplies | 1,189 | 1,127 | 2,366 | 2,268
Other operating expenses | 1,157 | 1,122 | 2,303 | 2,250
Equity in earnings of affiliates | (1) | (1) | (3) | (3)
Depreciation and amortization | 354 | 329 | 709 | 652
Interest expense (income) | (511) | (389) | (984) | (756)
Gains on sales of facilities | (8) | 23 | (7) | (372)
Management fees | (205) | (157) | (376) | (315)
Total expenses including equity in earnings of affiliates | 5,174 | 5,079 | 10,344 | 9,818
Income (loss) before income taxes | 1,955 | 1,695 | 4,009 | 3,732
Provision (benefit) for income taxes | 450 | 389 | 922 | 856
Net income (loss) | 1,505 | 1,306 | 3,087 | 2,876
Net income attributable to noncontrolling interests | 21 | 22 | 41 | 50
Net income (loss) attributable to HCA Healthcare, Inc. | 1,484 | 1,284 | 3,046 | 2,826
Comprehensive income (loss) attributable to HCA Healthcare, Inc. | 1,487 | 1,287 | 3,051 | 2,833
Subsidiary Non-Guarantors [Member] |  |  |  |
Condensed Statement of Income Captions [Line Items] |  |  |  |
Revenues | 5,473 | 4,755 | 10,766 | 9,402
Salaries and benefits | 2,638 | 2,249 | 5,148 | 4,469
Supplies | 929 | 790 | 1,793 | 1,564
Other operating expenses | 1,204 | 992 | 2,355 | 1,973
Equity in earnings of affiliates | (7) | (6) | (16) | (13)
Depreciation and amortization | 282 | 233 | 546 | 463
Interest expense (income) | (38) | (58) | (115) | (113)
Gains on sales of facilities | (10) | (32) | (10) | (42)
Management fees | 205 | 157 | 376 | 315
Total expenses including equity in earnings of affiliates | 5,203 | 4,325 | 10,077 | 8,616
Income (loss) before income taxes | 270 | 430 | 689 | 786
Provision (benefit) for income taxes | 34 | 72 | 103 | 128
Net income (loss) | 236 | 358 | 586 | 658
Net income attributable to noncontrolling interests | 123 | 124 | 245 | 234
Net income (loss) attributable to HCA Healthcare, Inc. | 113 | 234 | 341 | 424
Comprehensive income (loss) attributable to HCA Healthcare, Inc. | 84 | 157 | 335 | 397
Eliminations [Member] |  |  |  |
Condensed Statement of Income Captions [Line Items] |  |  |  |
Equity in earnings of affiliates | 822 | 852 | 1,848 | 1,942
Total expenses including equity in earnings of affiliates | 822 | 852 | 1,848 | 1,942
Income (loss) before income taxes | (822) | (852) | (1,848) | (1,942)
Net income (loss) | (822) | (852) | (1,848) | (1,942)
Net income (loss) attributable to HCA Healthcare, Inc. | (822) | (852) | (1,848) | (1,942)
Comprehensive income (loss) attributable to HCA Healthcare, Inc. | $ (765) | $ (788) | $ (1,798) | $ (1,959)

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