|
Consolidated Statements of Changes in Common Shareholders' Equity (USD $)
In Millions, except Share data, unless otherwise specified
|
Total
USD ($)
|
Common Shares (Units) [Member]
|
Treasury Shares (Units) [Member]
|
Common Shares [Member]
USD ($)
|
Paid-in-Surplus [Member]
USD ($)
|
Retained Earnings [Member]
USD ($)
|
Treasury Stock [Member]
USD ($)
|
Accumulated Other Comprehensive Income/(Loss) (Note 10) [Member]
USD ($)
|
| Shareholders' equity, beginning balance at Dec. 31, 2011 |
|
$ 18,578us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest |
|
|
$ 2,773us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember |
$ 4,031us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember |
$ 18,121us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember |
$ (5,293)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember |
$ (1,054)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember |
| Common shares, beginning balance at Dec. 31, 2011 |
|
|
1,108,700,000us-gaap_CommonStockSharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember |
(148,900,000)us-gaap_CommonStockSharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= unp_TreasuryStockUnitsMember |
|
|
|
|
|
| Comprehensive income [Abstract] |
|
|
|
|
|
|
|
|
|
| Net income |
|
3,943us-gaap_NetIncomeLoss |
|
|
|
|
3,943us-gaap_NetIncomeLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember |
|
|
| Other comp. income/(loss) |
[1] |
(132)us-gaap_OtherComprehensiveIncomeLossNetOfTax |
|
|
|
|
|
|
(132)us-gaap_OtherComprehensiveIncomeLossNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember |
| Conversion, stock option exercises, forfeitures, and other |
|
142us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation |
|
|
|
82us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember |
|
60us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember |
|
| Conversion, stock option exercises, forfeitures, and other (shares) |
|
|
600,000us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember |
4,200,000us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation
/ us-gaap_StatementClassOfStockAxis
= unp_TreasuryStockUnitsMember |
|
|
|
|
|
| Share repurchases (Note 19) |
|
(1,474)us-gaap_TreasuryStockValueAcquiredCostMethod |
|
|
|
|
|
(1,474)us-gaap_TreasuryStockValueAcquiredCostMethod
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember |
|
| Share repurchases (Note 19) (shares) |
|
|
|
(25,600,000)us-gaap_TreasuryStockSharesAcquired
/ us-gaap_StatementClassOfStockAxis
= unp_TreasuryStockUnitsMember |
|
|
|
|
|
| Cash dividends declared |
|
(1,180)us-gaap_DividendsCash |
|
|
|
|
(1,180)us-gaap_DividendsCash
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember |
|
|
| Shareholders' equity, ending balance at Dec. 31, 2012 |
|
19,877us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest |
|
|
2,773us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember |
4,113us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember |
20,884us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember |
(6,707)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember |
(1,186)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember |
| Common shares, ending balance at Dec. 31, 2012 |
|
|
1,109,300,000us-gaap_CommonStockSharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember |
(170,300,000)us-gaap_CommonStockSharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= unp_TreasuryStockUnitsMember |
|
|
|
|
|
| Comprehensive income [Abstract] |
|
|
|
|
|
|
|
|
|
| Net income |
|
4,388us-gaap_NetIncomeLoss |
|
|
|
|
4,388us-gaap_NetIncomeLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember |
|
|
| Other comp. income/(loss) |
[1] |
436us-gaap_OtherComprehensiveIncomeLossNetOfTax |
|
|
|
|
|
|
436us-gaap_OtherComprehensiveIncomeLossNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember |
| Conversion, stock option exercises, forfeitures, and other |
|
113us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation |
|
|
1us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember |
97us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember |
|
15us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember |
|
| Conversion, stock option exercises, forfeitures, and other (shares) |
|
|
400,000us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember |
1,600,000us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation
/ us-gaap_StatementClassOfStockAxis
= unp_TreasuryStockUnitsMember |
|
|
|
|
|
| Share repurchases (Note 19) |
|
(2,218)us-gaap_TreasuryStockValueAcquiredCostMethod |
|
|
|
|
|
(2,218)us-gaap_TreasuryStockValueAcquiredCostMethod
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember |
|
| Share repurchases (Note 19) (shares) |
|
(29,077,638)us-gaap_TreasuryStockSharesAcquired |
|
(29,000,000)us-gaap_TreasuryStockSharesAcquired
/ us-gaap_StatementClassOfStockAxis
= unp_TreasuryStockUnitsMember |
|
|
|
|
|
| Cash dividends declared |
|
(1,371)us-gaap_DividendsCash |
|
|
|
|
(1,371)us-gaap_DividendsCash
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember |
|
|
| Shareholders' equity, ending balance at Dec. 31, 2013 |
|
21,225us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest |
|
|
2,774us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember |
4,210us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember |
23,901us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember |
(8,910)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember |
(750)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember |
| Common shares, ending balance at Dec. 31, 2013 |
|
912,001,996us-gaap_CommonStockSharesOutstanding |
1,109,700,000us-gaap_CommonStockSharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember |
(197,700,000)us-gaap_CommonStockSharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= unp_TreasuryStockUnitsMember |
|
|
|
|
|
| Comprehensive income [Abstract] |
|
|
|
|
|
|
|
|
|
| Net income |
|
5,180us-gaap_NetIncomeLoss |
|
|
|
|
5,180us-gaap_NetIncomeLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember |
|
|
| Other comp. income/(loss) |
[1] |
(460)us-gaap_OtherComprehensiveIncomeLossNetOfTax |
|
|
|
|
|
|
(460)us-gaap_OtherComprehensiveIncomeLossNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember |
| Conversion, stock option exercises, forfeitures, and other |
|
183us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation |
|
|
1us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember |
111us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember |
|
71us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember |
|
| Conversion, stock option exercises, forfeitures, and other (shares) |
|
|
400,000us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember |
3,000,000us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation
/ us-gaap_StatementClassOfStockAxis
= unp_TreasuryStockUnitsMember |
|
|
|
|
|
| Share repurchases (Note 19) |
|
(3,225)us-gaap_TreasuryStockValueAcquiredCostMethod |
|
|
|
|
|
(3,225)us-gaap_TreasuryStockValueAcquiredCostMethod
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember |
|
| Share repurchases (Note 19) (shares) |
|
(32,043,400)us-gaap_TreasuryStockSharesAcquired |
|
(32,000,000)us-gaap_TreasuryStockSharesAcquired
/ us-gaap_StatementClassOfStockAxis
= unp_TreasuryStockUnitsMember |
|
|
|
|
|
| Cash dividends declared |
|
(1,714)us-gaap_DividendsCash |
|
|
|
|
(1,714)us-gaap_DividendsCash
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember |
|
|
| Shareholders' equity, ending balance at Dec. 31, 2014 |
|
$ 21,189us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest |
|
|
$ 2,775us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember |
$ 4,321us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember |
$ 27,367us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember |
$ (12,064)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember |
$ (1,210)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember |
| Common shares, ending balance at Dec. 31, 2014 |
|
883,366,476us-gaap_CommonStockSharesOutstanding |
1,110,100,000us-gaap_CommonStockSharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember |
(226,700,000)us-gaap_CommonStockSharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= unp_TreasuryStockUnitsMember |
|
|
|
|
|
|
|
|