Annual report pursuant to Section 13 and 15(d)

Income Taxes - Reconciliation Of The Tax Provision At The U.S. Federal Statutory Rate To The Provision For Income Taxes (Details)

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Income Taxes - Reconciliation Of The Tax Provision At The U.S. Federal Statutory Rate To The Provision For Income Taxes (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]      
Earnings from operations, before income tax expense $ 1,782 $ 1,368 $ 1,134
Loss (earnings) attributable to flow through noncontrolling interest 11 4 15
Earnings from operations, less noncontrolling interest, before income tax expense 1,793 1,372 1,149
Tax provision at the U.S. federal statutory rate 377 288 402
State income taxes, net of federal income tax benefit 49 52 11
Nondeductible compensation 42 33 58
ACA Health Insurer Fee 0 149 0
Income Tax Reform 0 0 (125)
Valuation Allowance 0 (28) 14
Nondeductible goodwill impairment 30 0 0
Other, net (25) (20) (34)
Income tax expense $ 473 $ 474 $ 326