v2.4.0.8
Condensed Consolidating Financial Information Condensed Consolidating Statements of Comprehensive Income (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Sep. 30, 2013
Sep. 30, 2012
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Condensed Financial Statements, Captions [Line Items]                            
Net income $ 73,445 $ 62,188 [1] $ 54,048 [1] $ 63,998 [1] $ 80,991 [1] $ 56,145 $ 49,231 $ 46,706 $ 58,182 $ 233,759 $ 199,037 $ 261,225 $ 210,264 $ 169,071
Other comprehensive income, net of tax:                            
Foreign currency translation 28,514   10,182             6,330 12,518 12,921 (4,273) 3,078
Net change in unrecognized gains/losses on derivative instruments, net of tax 625   (1,242)             3,986 (4,233) (3,201) (9,066) 8,712
Reversal of unrealized gain on pension plan, net of tax                       0 0 (15)
Total other comprehensive income (loss) 29,139   8,940             10,316 8,285 9,720 (13,339) 11,775
Total comprehensive income 102,584   62,988             244,075 207,322 270,945 196,925 180,846
Parent Company
                            
Condensed Financial Statements, Captions [Line Items]                            
Net income 73,445   54,048             233,759 199,037 261,225 210,264 169,071
Other comprehensive income, net of tax:                            
Foreign currency translation 28,514   10,182             6,330 12,518 12,921 (4,273) 3,078
Net change in unrecognized gains/losses on derivative instruments, net of tax 625   (1,242)             3,986 (4,233) (3,201) (9,066) 8,712
Reversal of unrealized gain on pension plan, net of tax                           (15)
Total other comprehensive income (loss) 29,139   8,940             10,316 8,285 9,720 (13,339) 11,775
Total comprehensive income 102,584   62,988             244,075 207,322 270,945 196,925 180,846
Guarantor Subsidiaries
                            
Condensed Financial Statements, Captions [Line Items]                            
Net income 60,388   44,429             200,572 172,431 234,399 210,575 174,334
Other comprehensive income, net of tax:                            
Foreign currency translation 13,130   3,880             3,386 4,965 5,278 (1,440) 1,517
Net change in unrecognized gains/losses on derivative instruments, net of tax 0   0             0 0 0 0 0
Reversal of unrealized gain on pension plan, net of tax                           (15)
Total other comprehensive income (loss) 13,130   3,880             3,386 4,965 5,278 (1,440) 1,502
Total comprehensive income 73,518   48,309             203,958 177,396 239,677 209,135 175,836
Non-Guarantor Subsidiaries
                            
Condensed Financial Statements, Captions [Line Items]                            
Net income 23,076   14,400             60,039 39,701 44,152 8,444 1,502
Other comprehensive income, net of tax:                            
Foreign currency translation 28,104   9,485             7,107 11,735 12,334 (3,790) 2,706
Net change in unrecognized gains/losses on derivative instruments, net of tax 127   (166)             903 (619) (519) (1,042) 0
Reversal of unrealized gain on pension plan, net of tax                           0
Total other comprehensive income (loss) 28,231   9,319             8,010 11,116 11,815 (4,832) 2,706
Total comprehensive income 51,307   23,719             68,049 50,817 55,967 3,612 4,208
Consolidation, Eliminations
                            
Condensed Financial Statements, Captions [Line Items]                            
Net income (83,464)   (58,829)             (260,611) (212,132) (278,551) (219,019) (175,836)
Other comprehensive income, net of tax:                            
Foreign currency translation (41,234)   (13,365)             (10,493) (16,700) (17,612) 5,230 (4,223)
Net change in unrecognized gains/losses on derivative instruments, net of tax (127)   166             (903) 619 519 1,042 0
Reversal of unrealized gain on pension plan, net of tax                           15
Total other comprehensive income (loss) (41,361)   (13,199)             (11,396) (16,081) (17,093) 6,272 (4,208)
Total comprehensive income $ (124,825)   $ (72,028)             $ (272,007) $ (228,213) $ (295,644) $ (212,747) $ (180,044)
[1] Gross margin and operating income during the quarters ended March 31, 2012, June 30, 2012, September 30, 2012 and December 31, 2012 include gains of $8.3 million, $8.4 million, $0.5 million and $0.7 million, respectively, resulting from lawsuit settlements with certain of our aftermarket product suppliers as discussed in Note 8, "Commitments and Contingencies."