XML 24 R43.htm IDEA: XBRL DOCUMENT
v3.3.0.814

Derivative Instruments and Hedging - Additional Information (Detail) - USD ($) $ in Thousands |  | 1 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Jul. 26, 2013 | Jan. 31, 2009 | Oct. 03, 2015 | Jan. 03, 2015
Derivative |  |  |  |
Maximum length of time hedging forecasted |  |  | 6 years |
Derivative losses included in accumulated other comprehensive income/(loss) that are expected to be reclassified into earnings within the next 12 months, net of tax |  |  | $ (11,348) |
Derivative losses included in accumulated other comprehensive income/(loss) that are expected to be reclassified into earnings within the next 12 months, before tax |  |  | $ (18,603) |
Interest Rate Swap |  |  |  |
Derivative |  |  |  |
Forward starting interest rate swap, termination date | Apr. 02, 2020 | Jan. 27, 2014 |  |
Forward-starting interest rate swap, effective date | Mar. 31, 2014 |  |  |
Derivative interest rate swap percentage |  |  | 2.38% |
Cumulative losses for qualifying hedges reported as a component of accumulated other comprehensive loss, net of tax |  |  | $ (32,005) | $ (21,856)
Cumulative losses for qualifying hedges reported as a component of accumulated other comprehensive loss, before tax |  |  | (52,468) | (35,830)
Interest Rate Swap | Cash Flow Hedging |  |  |  |
Derivative |  |  |  |
Notional amount | $ 1,500,000 |  | 1,500,000 | $ 1,500,000
Interest Rate Swap | Cash Flow Hedging | March 31, 2014 |  |  |  |
Derivative |  |  |  |
Notional amount |  |  | $ 1,500,000 |
Forward-starting interest rate swap, effective date |  |  | Mar. 31, 2014 |
Interest Rate Swap | Cash Flow Hedging | April 3, 2017 |  |  |  |
Derivative |  |  |  |
Notional amount |  |  | $ 1,250,000 |
Forward-starting interest rate swap, effective date |  |  | Apr. 03, 2017 |
Interest Rate Swap | Cash Flow Hedging | April 1, 2019 |  |  |  |
Derivative |  |  |  |
Notional amount |  |  | $ 1,000,000 |
Forward-starting interest rate swap, effective date |  |  | Apr. 01, 2019 |

X
- Definition Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e637-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e681-108580 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80784-113994 + Details
Name: | us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Nominal or face amount used to calculate payments on the derivative liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Notional Amount -URI http://asc.fasb.org/extlink&oid=6519104 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5579245-113959 + Details
Name: | us-gaap_DerivativeLiabilityNotionalAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Date the derivative contract matures, in CCYY-MM-DD format. + References No definition available. + Details
Name: | us-gaap_DerivativeMaturityDates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fixed interest rate that will be received or paid upon exercise of the interest rate swaption contract. + References No definition available. + Details
Name: | us-gaap_DerivativeSwaptionInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994 + Details
Name: | us-gaap_InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Maximum length of time over which the entity is hedging its exposure to the variability in future cash flows for forecasted transactions, excluding those forecasted transactions related to the payment of variable interest on existing financial instruments, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994 + Details
Name: | us-gaap_MaximumLengthOfTimeHedgedInCashFlowHedge1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Accumulated change, before tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses. + References No definition available. + Details
Name: | wtw_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectPretax
Namespace Prefix: | wtw_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Date the derivative contract becomes effective and dates the notional amount decreases, in CCYY-MM-DD format. + References No definition available. + Details
Name: | wtw_DerivativeEffectiveDateAndNotionalAmountDecreases
Namespace Prefix: | wtw_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition The estimated before tax amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months. + References No definition available. + Details
Name: | wtw_InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNextTwelveMonthsBeforeTax
Namespace Prefix: | wtw_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_CashFlowHedgingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementScenarioAxis=wtw_PeriodOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementScenarioAxis=wtw_PeriodTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementScenarioAxis=wtw_PeriodThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |