S000021575 [Member] Average Annual Total Returns	3 Months Ended	12 Months Ended	60 Months Ended	120 Months Ended	146 Months Ended	207 Months Ended	240 Months Ended	327 Months Ended
S000021575 [Member] Average Annual Total Returns	Dec. 31, 2024	Dec. 31, 2024	Dec. 31, 2024	Dec. 31, 2024	Dec. 31, 2024	Dec. 31, 2024	Dec. 31, 2024	Dec. 31, 2024
Russell 1000® Growth Index (reflects no deductions for fees, expenses or taxes)
Prospectus [Line Items]
Average Annual Return, Percent		33.36%	18.96%	16.78%
Russell 1000® Index (reflects no deductions for fees, expenses or taxes)
Prospectus [Line Items]
Average Annual Return, Percent		24.51%	14.28%	12.87%
C000122689 [Member]
Prospectus [Line Items]
Average Annual Return, Percent		16.13%	12.32%	12.14%
Performance Inception Date					Nov. 08, 2012
C000061820 [Member]
Prospectus [Line Items]
Average Annual Return, Percent		15.35%	11.59%	11.42%
Performance Inception Date							Dec. 31, 2004
C000254317 [Member]
Prospectus [Line Items]
Average Annual Return, Percent		16.00%	12.14%	11.98%
Performance Inception Date	Oct. 02, 2024
C000061818 [Member]
Prospectus [Line Items]
Average Annual Return, Percent		9.05%	10.54%	11.04%
Performance Inception Date						Sep. 28, 2007
C000061818 [Member] \| After Taxes on Distributions
Prospectus [Line Items]
Average Annual Return, Percent		4.31%	5.21%	6.10%
Performance Inception Date						Sep. 28, 2007
C000061818 [Member] \| After Taxes on Distributions and Sales
Prospectus [Line Items]
Average Annual Return, Percent		8.78%	7.61%	7.72%
Performance Inception Date						Sep. 28, 2007
C000061821 [Member]
Prospectus [Line Items]
Average Annual Return, Percent		16.00%	12.14%	11.98%
Performance Inception Date								Oct. 01, 1997
C000122688 [Member]
Prospectus [Line Items]
Average Annual Return, Percent		16.06%	12.26%	12.10%
Performance Inception Date					Nov. 08, 2012