v3.3.1.900
Debt and Capital Lease Obligations (VM Notes) (Details)
£ in Millions, $ in Millions
1 Months Ended
Oct. 07, 2014
USD ($)
Apr. 30, 2014
USD ($)
Jan. 29, 2015
Jan. 28, 2015
Dec. 31, 2014
USD ($)
Dec. 31, 2014
GBP (£)
Oct. 07, 2014
GBP (£)
Apr. 30, 2014
GBP (£)
Mar. 28, 2014
USD ($)
Mar. 28, 2014
GBP (£)
Dec. 31, 2013
USD ($)
Debt Instrument [Line Items]                      
Estimated fair value         $ 46,151.1           $ 44,229.0
Carrying value         44,611.4           42,856.0
VM Notes [Member]                      
Debt Instrument [Line Items]                      
Estimated fair value         8,461.0           9,188.7
Carrying value         8,060.7           $ 9,150.1
Debt acceleration covenant threshold for event of default         $ 77.9 £ 50.0          
Additional basis points used to determine redemption premium         0.50% 0.50%          
Mandatory redemption percentage in event that certain assets sold or specific control changed         101.00% 101.00%          
VM Senior Notes [Member]                      
Debt Instrument [Line Items]                      
Principal amount of debt         $ 8,028.4            
Estimated fair value         8,461.0            
Carrying value         8,060.7            
Debt acceleration covenant threshold for event of default         116.9 £ 75.0          
2022 VM 5.25% Dollar Senior Notes                      
Debt Instrument [Line Items]                      
Principal amount of debt         $ 95.0            
Stated interest rate of debt         5.25% 5.25%          
Estimated fair value         $ 90.5            
Carrying value         95.8            
2022 VM 4.875% Dollar Senior Notes                      
Debt Instrument [Line Items]                      
Principal amount of debt         $ 118.7            
Stated interest rate of debt         4.875% 4.875%          
Estimated fair value         $ 113.9            
Carrying value         119.6            
2022 VM Sterling Senior Notes                      
Debt Instrument [Line Items]                      
Principal amount of debt         $ 68.7 £ 44.1          
Stated interest rate of debt         5.125% 5.125%          
Estimated fair value         $ 69.7            
Carrying value         69.3            
2023 VM Dollar Senior Notes                      
Debt Instrument [Line Items]                      
Principal amount of debt         $ 530.0            
Stated interest rate of debt         6.375% 6.375%          
Estimated fair value         $ 555.8            
Carrying value         $ 530.0            
2018         103.188% 103.188%          
2019         102.125% 102.125%          
2020         101.063% 101.063%          
2021         100.00% 100.00%          
2022         100.00% 100.00%          
2023 VM Sterling Senior Notes                      
Debt Instrument [Line Items]                      
Principal amount of debt         $ 389.5 £ 250.0          
Stated interest rate of debt         7.00% 7.00%          
Estimated fair value         $ 425.1            
Carrying value         $ 389.5            
2018         103.50% 103.50%          
2019         102.333% 102.333%          
2020         101.667% 101.667%          
2021         100.00% 100.00%          
2022         100.00% 100.00%          
2024 VM Dollar Senior Notes [Member]                      
Debt Instrument [Line Items]                      
Principal amount of debt $ 500.0       $ 500.0            
Stated interest rate of debt 6.00%       6.00% 6.00% 6.00%        
Estimated fair value         $ 525.0            
Carrying value         $ 500.0            
2019         103.00% 103.00%          
2020         102.00% 102.00%          
2021         101.00% 101.00%          
2022         100.00% 100.00%          
2023         100.00% 100.00%          
2024 VM Sterling Senior Notes [Member]                      
Debt Instrument [Line Items]                      
Principal amount of debt $ 467.4       $ 467.4 £ 300.0 £ 300.0        
Stated interest rate of debt 6.375%       6.375% 6.375% 6.375%        
Estimated fair value         $ 504.8            
Carrying value         $ 467.4            
2019         103.188% 103.188%          
2020         102.125% 102.125%          
2021         101.063% 101.063%          
2022         100.00% 100.00%          
2023         100.00% 100.00%          
January 2021 VM Senior Secured Notes [Member]                      
Debt Instrument [Line Items]                      
Additional basis points used to determine redemption premium         0.25% 0.25%          
January 2021 VM Sterling Senior Secured Notes                      
Debt Instrument [Line Items]                      
Principal amount of debt         $ 979.1 £ 628.4          
Stated interest rate of debt         5.50% 5.50%          
Estimated fair value         $ 1,055.0            
Carrying value         992.2            
January 2021 VM Dollar Senior Secured Notes                      
Debt Instrument [Line Items]                      
Principal amount of debt         $ 447.9            
Stated interest rate of debt         5.25% 5.25%          
Estimated fair value         $ 468.0            
Carrying value         460.1            
April 2021 VM Dollar Senior Secured Notes                      
Debt Instrument [Line Items]                      
Principal amount of debt         $ 1,000.0            
Stated interest rate of debt         5.375% 5.375%          
Estimated fair value         $ 1,033.1            
Carrying value         $ 1,000.0            
2017         102.688% 102.688%          
2018         101.344% 101.344%          
2019         100.00% 100.00%          
2020         100.00% 100.00%          
April 2021 VM Sterling Senior Secured Notes                      
Debt Instrument [Line Items]                      
Principal amount of debt         $ 1,713.9 £ 1,100.0          
Stated interest rate of debt         6.00% 6.00%          
Estimated fair value         $ 1,810.3            
Carrying value         $ 1,713.9            
2017         103.00% 103.00%          
2018         101.50% 101.50%          
2019         100.00% 100.00%          
2020         100.00% 100.00%          
VM Senior Secured Notes, 2025 [Member]                      
Debt Instrument [Line Items]                      
2019         102.75% 102.75%          
2020         101.833% 101.833%          
2021         100.00% 100.00%          
2022         100.00% 100.00%          
2023         100.00% 100.00%          
2024 and thereafter         100.00% 100.00%          
VM Sterling Senior Secured Notes, 2025 [Member]                      
Debt Instrument [Line Items]                      
Principal amount of debt         $ 670.0 £ 430.0     $ 670.0 £ 430.0  
Stated interest rate of debt         5.50% 5.50%     5.50% 5.50%  
Estimated fair value         $ 694.7            
Carrying value         670.0            
VM Dollar Senior Secured Notes, 2025 [Member]                      
Debt Instrument [Line Items]                      
Principal amount of debt         $ 425.0       $ 425.0    
Stated interest rate of debt         5.50% 5.50%     5.50% 5.50%  
Estimated fair value         $ 440.1            
Carrying value         $ 425.0            
VM Senior Secured Notes, 2029 [Member]                      
Debt Instrument [Line Items]                      
Original issue price, percentage   101.75%           101.75%      
2021         103.125% 103.125%          
2022         102.083% 102.083%          
2023         101.042% 101.042%          
2024 and thereafter         100.00% 100.00%          
Original 2029 VM Senior Secured Notes [Member]                      
Debt Instrument [Line Items]                      
Principal amount of debt                 $ 350.6 £ 225.0  
Stated interest rate of debt   6.25%           6.25% 6.25% 6.25%  
Additional 2029 VM Senior Secured Notes [Member]                      
Debt Instrument [Line Items]                      
Principal amount of debt   $ 272.7           £ 175.0      
2018 VM Dollar Senior Secured Notes                      
Debt Instrument [Line Items]                      
Principal amount of debt   $ 1,000.0                  
Stated interest rate of debt   6.50%           6.50%      
Gains (losses) on extinguishment of debt   $ (5.4)                  
Write-off of unamortized debt discount (premium)   (33.9)                  
Payment for debt redemption premium   32.4                  
Write off of deferred debt issuance cost   6.9                  
2018 VM Sterling Senior Secured Notes                      
Debt Instrument [Line Items]                      
Principal amount of debt   $ 1,363.4           £ 875.0      
Stated interest rate of debt   7.00%           7.00%      
Gains (losses) on extinguishment of debt   $ 5.2                  
Write-off of unamortized debt discount (premium)   (61.8)                  
Payment for debt redemption premium   51.3                  
Write off of deferred debt issuance cost   $ 5.3                  
2019 VM Senior Notes [Member]                      
Debt Instrument [Line Items]                      
Gains (losses) on extinguishment of debt $ 32.5                    
Write-off of unamortized debt discount (premium) (75.2)                    
Payment for debt redemption premium 39.3                    
Write off of deferred debt issuance cost $ 3.4                    
2019 VM Dollar Senior Notes                      
Debt Instrument [Line Items]                      
Stated interest rate of debt 8.375%           8.375%        
Principal amount of debt redeemed $ 507.1                    
2019 VM Sterling Senior Notes                      
Debt Instrument [Line Items]                      
Stated interest rate of debt 8.875%           8.875%        
Principal amount of debt redeemed $ 395.0           £ 253.5        
2029 VM Sterling Senior Secured Notes [Member]                      
Debt Instrument [Line Items]                      
Principal amount of debt         $ 623.2 £ 400.0          
Stated interest rate of debt         6.25% 6.25%          
Estimated fair value         $ 675.0            
Carrying value         $ 627.9            
Long-term Debt [Member] | 2025 VM 5.125% Senior Secured Notes [Member] | Subsequent Event [Member]                      
Debt Instrument [Line Items]                      
Mandatory redemption percentage in event that certain assets sold or specific control changed     101.00% 101.00%