XBRL Cloud: Business Report

Rendering

Component: (Network and Table)
Network	2432403 - Disclosure - Commercial Paper and Long-Term Debt (Details) (http://www.uhc.com/role/CommercialPaperAndLongTermDebtDetails)
Table	Schedule of Long-term Debt Instruments [Table]

Slicers (applies to each fact value in each table cell)

Reporting Entity [Axis]

0000731766 (http://www.sec.gov/CIK)

Debt Instrument [Line Items]	Period [Axis]
	2016-12-31																																												2015-12-31
	Debt Instrument [Axis]																																												Debt Instrument [Axis]
	Commercial Paper [Member]	Floating-rate Term Loan Due July 2016 [Member]	5.375% Notes Due March 2016 [Member]	1.875% Notes Due November 2016 [Member]	5.360% Notes Due November 2016 [Member]	Floating-rate Notes Due January 2017 [Member]	6.000% Notes Due June 2017 [Member]	1.450% Notes Due July 2017 [Member]	1.400% Notes Due October 2017 [Member]	6.000% Notes Due November 2017 [Member]	1.400% Notes Due December 2017 [Member]	6.000% Notes Due February 2018 [Member]	1.900% Notes Due July 2018 [Member]	1.700% Notes due February 2019 [Member]	1.625% Notes Due March 2019 [Member]	2.300% Notes Due December 2019 [Member]	2.700% Notes Due July 2020 [Member]	3.875% Notes Due October 2020 [Member]	4.700% Notes Due February 2021 [Member]	2.125% notes due March 2021 [Member]	3.375% Notes Due November 2021 [Member]	2.875% Notes Due December 2021 [Member]	2.875% Notes Due March 2022 [Member]	3.350% Notes Due July 2022 [Member]	0.000% Notes Due November 2022 [Member]	2.750% Notes Due February 2023 [Member]	2.875% Notes Due March 2023 [Member]	3.750% Notes Due July 2025 [Member]	3.100% notes due March 2026 [Member]	3.450% notes due January 2027 [Member]	4.625% Notes Due July 2035 [Member]	5.800% Notes Due March 2036 [Member]	6.500% Notes Due June 2037 [Member]	6.625% Notes Due November 2037 [Member]	6.875% Notes Due Februray 2038 [Member]	5.700% Notes Due October 2040 [Member]	5.950% Notes Due Februrary 2041 [Member]	4.625% Notes Due November 2041 [Member]	4.375% Notes Due March 2042 [Member]	3.950% Notes Due October 2042 [Member]	4.250% Notes Due March 2043 [Member]	4.750% Notes Due July 2045 [Member]	4.200% notes due January 2047 [Member]	Debt Instrument, Name [Domain]	Commercial Paper [Member]	Floating-rate Term Loan Due July 2016 [Member]	5.375% Notes Due March 2016 [Member]	1.875% Notes Due November 2016 [Member]	5.360% Notes Due November 2016 [Member]	Floating-rate Notes Due January 2017 [Member]	6.000% Notes Due June 2017 [Member]	1.450% Notes Due July 2017 [Member]	1.400% Notes Due October 2017 [Member]	6.000% Notes Due November 2017 [Member]	1.400% Notes Due December 2017 [Member]	6.000% Notes Due February 2018 [Member]	1.900% Notes Due July 2018 [Member]	1.700% Notes due February 2019 [Member]	1.625% Notes Due March 2019 [Member]	2.300% Notes Due December 2019 [Member]	2.700% Notes Due July 2020 [Member]	3.875% Notes Due October 2020 [Member]	4.700% Notes Due February 2021 [Member]	2.125% notes due March 2021 [Member]	3.375% Notes Due November 2021 [Member]	2.875% Notes Due December 2021 [Member]	2.875% Notes Due March 2022 [Member]	3.350% Notes Due July 2022 [Member]	0.000% Notes Due November 2022 [Member]	2.750% Notes Due February 2023 [Member]	2.875% Notes Due March 2023 [Member]	3.750% Notes Due July 2025 [Member]	3.100% notes due March 2026 [Member]	3.450% notes due January 2027 [Member]	4.625% Notes Due July 2035 [Member]	5.800% Notes Due March 2036 [Member]	6.500% Notes Due June 2037 [Member]	6.625% Notes Due November 2037 [Member]	6.875% Notes Due Februray 2038 [Member]	5.700% Notes Due October 2040 [Member]	5.950% Notes Due Februrary 2041 [Member]	4.625% Notes Due November 2041 [Member]	4.375% Notes Due March 2042 [Member]	3.950% Notes Due October 2042 [Member]	4.250% Notes Due March 2043 [Member]	4.750% Notes Due July 2045 [Member]	4.200% notes due January 2047 [Member]	Debt Instrument, Name [Domain]
Debt Instrument, Interest Rate, Stated Percentage			5.375%	1.875%	5.36%		6.00%	1.45%	1.40%	6.00%	1.40%	6.00%	1.90%	1.70%	1.625%	2.30%	2.70%	3.875%	4.70%	2.125%	3.375%	2.875%	2.875%	3.35%	0.00%	2.75%	2.875%	3.75%	3.10%	3.45%	4.625%	5.80%	6.50%	6.625%	6.875%	5.70%	5.95%	4.625%	4.375%	3.95%	4.25%	4.75%	4.20%
Par Value	3,633,000,000	0	0	0	0	750,000,000	441,000,000	750,000,000	625,000,000	156,000,000	750,000,000	1,100,000,000	1,500,000,000	750,000,000	500,000,000	500,000,000	1,500,000,000	450,000,000	400,000,000	750,000,000	500,000,000	750,000,000	1,100,000,000	1,000,000,000	15,000,000	625,000,000	750,000,000	2,000,000,000	1,000,000,000	750,000,000	1,000,000,000	850,000,000	500,000,000	650,000,000	1,100,000,000	300,000,000	350,000,000	600,000,000	502,000,000	625,000,000	750,000,000	2,000,000,000	750,000,000	33,022,000,000	3,987,000,000	1,500,000,000	601,000,000	400,000,000	95,000,000	750,000,000	441,000,000	750,000,000	625,000,000	156,000,000	750,000,000	1,100,000,000	1,500,000,000	0	500,000,000	500,000,000	1,500,000,000	450,000,000	400,000,000	0	500,000,000	750,000,000	1,100,000,000	1,000,000,000	15,000,000	625,000,000	750,000,000	2,000,000,000	0	0	1,000,000,000	850,000,000	500,000,000	650,000,000	1,100,000,000	300,000,000	350,000,000	600,000,000	502,000,000	625,000,000	750,000,000	2,000,000,000	0	31,972,000,000
Commercial Paper	3,633,000,000	0																																											3,987,000,000 ¹	1,500,000,000 ¹
Carrying Value																																												32,770,000,000																																												31,801,000,000
Carrying Value			0	0	0	750,000,000	446,000,000	750,000,000	624,000,000	159,000,000	751,000,000	1,107,000,000	1,496,000,000	748,000,000	501,000,000	498,000,000	1,495,000,000	450,000,000	409,000,000	745,000,000	497,000,000	748,000,000	1,057,000,000	995,000,000	11,000,000	609,000,000	771,000,000	1,986,000,000	994,000,000	745,000,000	991,000,000	837,000,000	491,000,000	640,000,000	1,075,000,000	296,000,000	345,000,000	588,000,000	483,000,000	606,000,000	734,000,000	1,972,000,000	737,000,000				605,000,000 ¹	400,000,000 ¹	95,000,000 ¹	749,000,000 ¹	458,000,000 ¹	749,000,000 ¹	624,000,000 ¹	162,000,000 ¹	751,000,000 ¹	1,114,000,000 ¹	1,494,000,000 ¹	0 ¹	502,000,000 ¹	499,000,000 ¹	1,493,000,000 ¹	452,000,000 ¹	413,000,000 ¹	0 ¹	500,000,000 ¹	753,000,000 ¹	1,059,000,000 ¹	994,000,000 ¹	10,000,000 ¹	611,000,000 ¹	781,000,000 ¹	1,985,000,000 ¹	0 ¹	0 ¹	991,000,000 ¹	838,000,000 ¹	492,000,000 ¹	641,000,000 ¹	1,076,000,000 ¹	296,000,000 ¹	345,000,000 ¹	588,000,000 ¹	483,000,000 ¹	606,000,000 ¹	734,000,000 ¹	1,971,000,000 ¹	0 ¹
Debt and other financing obligations	3,633,000,000	0																																											3,987,000,000	1,500,000,000
Fair Value			0	0	0	750,000,000	450,000,000	751,000,000	626,000,000	163,000,000	750,000,000	1,153,000,000	1,507,000,000	748,000,000	498,000,000	504,000,000	1,523,000,000	474,000,000	433,000,000	741,000,000	519,000,000	760,000,000	1,114,000,000	1,030,000,000	12,000,000	622,000,000	753,000,000	2,070,000,000	986,000,000	762,000,000	1,090,000,000	1,034,000,000	643,000,000	850,000,000	1,497,000,000	366,000,000	437,000,000	634,000,000	509,000,000	609,000,000	765,000,000	2,203,000,000	759,000,000	34,728,000,000			606,000,000	403,000,000	98,000,000	751,000,000	469,000,000	750,000,000	624,000,000	168,000,000	748,000,000	1,196,000,000	1,505,000,000	0	494,000,000	502,000,000	1,516,000,000	476,000,000	438,000,000	0	517,000,000	760,000,000	1,099,000,000	1,023,000,000	11,000,000	613,000,000	742,000,000	2,062,000,000	0	0	1,038,000,000	1,003,000,000	628,000,000	829,000,000	1,439,000,000	348,000,000	416,000,000	609,000,000	493,000,000	582,000,000	728,000,000	2,107,000,000	0	33,278,000,000

1: In the first quarter of 2016, the Company adopted ASU 2015-03, retrospectively as required. See Note 2 for more information on the adoption of ASU 2015-03.